"':~·:·f..;:'\~t::~,~~,

¥ • ¥

THE complete answer to 011 your measuring problems!Whether you ore considering th'le question of panel in-

struments for use in your new dreorn rig or in rebuildingthe old - for that matter anywhere your need includesefficiency and economy plus eye cppeo] you ore not longin finding the onswer today. Precision workmanship de-serves the use of precision equipment throughout - it istherefore natural your choice should be a Simpson.

Simpson - always a leader - is again out in frcntwith extra features that allow the claim to "InstrumentsThat Stay Accurate" to remain undisputed throughout theindustry. For your rig, therefore, the guarantee of depend-able operation is the installation of Canadian mode Simpson'meters now.

At All Leading Distributors

I3ACti --~I,"V~()~ LI,"IT~[)71 eARLI NG STREET LONDON,., ONTARIO

('

~,I

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NOVEMB1946

Vol. 7 No

for the

Albeit E. Yates,22~Benson Ave.)9.oronto 10, onto

crnoo~ [p

CANADA' TAND~RD OF PERFORMANCE

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I

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TO 'MEET YOUR SPECIFIC NEEDS

RCA VI<;TOR COMPANY LIMITEDHAll FAX MONTREAL OTTAWA TORONTO

WINNIPEG CALGARY VANCOUVER

1946

• Test equipment

• Replacement paris

• Microphones

• Studio equipment

e Amplifiers

• Communication transmittersand receivers

• Transmitting, receiving,cathode ray and specialpurpose tubes

• Capacitors

~@

NOVEMBER XTAL

EYES FOR YOUR RECEIVER!with the

PANADAPTORNOW

AVAILABLE

FOR THE

FIRST TIME

FOR

AMATEURS

• Model PCA-2-Complete ten tubesuperheterodyne, osci lIoscope and 25 ar60 cycle power supply included. Oneyear guarantee against defects in partsand workmanship (excluding tubes).

A "must" for modern radio shacks, this war-perfected in-strument enables ycu to view 011 signals on the band at onetime. Signal type, strength, QRM spots and clear channelsare all visible.Foreign signals just off the ends of the bands are clearlynoted and only awoit a CQ at the righttime.An ideal test instrument for indicatingmodulation, hum, or frequency checks ofyour own rig or other stations.

Ask Your Jobber For A Demonstration.Write For Descriptive Literature.

Manufactured ByPANORAMIC RADIO CORPORATION

DISTRIBUTED IN CANADA BY

CANADIAN MARCONI COMPANYEstablished 1903

MARCONI BUILDING MONTREALVancouver-Winnipeg-Toronto-Halifax-St. John's, Nfld.

MARCONI - The Greatest Name In Radio

NOVEMBER XTAL ~-------- 19462 -----------------

THEI.IOAThe ONE-TEN-A is a complete redesign of the ONE-TEN,retaining all the proven design features of the older modelbut with improved performance and smoothness of control.

For many years the ONE-TEN has been the "standard" re-ceiver for work in the range from one to ten meters. Althoughmany advances in high frequency technique have been made

. since this little receiver was first introduced, it has easily heldits place in the affections of experienced amateurs by its con-sistent dependability under actual operating conditions andits high usable sensitivity.

The new ONE- TEN-A inherits the fine qualities of its pred-ecessor brought up to date by a complete restudy of circuit,mechanical arrangement and constructional details.

The ONE- TEN-A is a fine receiver.

You've been wanting thisGENERAL~ELECTRIO

HIGH POWER TETRODEwith frequency range

that includes the6-meter band I

• • •

TYPEGL-5D24

ELECTRICAL CHARACTERISTICS

Filament voltage. 5 vFilament current • 14.1 ampAvg. inter-electrode capacitances:

grid-plate 0.06 mmfdfilament-grid 12.7 mmfdfilament-plate .4.5 mmfd

MAXIMUM RATINGS (ICAS)

Plate voltage .Screen voltagePlate current .Plate dissipation

4,000 v

600 v

350 ma250 w

THIS "Mr. Big" at a price you canafford, requires for its I-kw rnax

plate input (Class C telegraphy) adriving power of only some 5 w-spelling real operating economy for theradio amateur who wants his rig to packa man-size wallop!

Clean, compact, modern design, fitsthe GL-5D24 for efficient use in the highfrequencies. The large bulb gives better-than-average heat radiation. Extra-shortleads mean minimum lead inductance.Because of the low grid-plate capaci-tance (0.06 mmfd) , no neutralizationnormally is required.

Type GL-5D24, at top ratings, willoperate at frequencies up to 85 mega-cycles, or well beyond the 6-meterband's requirements.' Due to its com-pact construction the tube requires. avery limited amount of forced-air cool-ing for the base (1 cfm), and if operatedat or near max ratings the bulb needssome forced air also. However, anordinary small household fan will morethan satisfy both of these requirements.

For further information contact theC.G.E. Dealer nearest you or writeElectronics Division, 212 King St. W.,Toronto.

WR-1346

COLTDCANADIAN GENERAL ELECTRIC

HEAD OFFICE-TORONTO

4 ----------------~----- 1946NOVEMBER XTAL -------------

'S<JII.!.IT"S/~C:"T"'I1''t'1!\\.- •

[C . R Y ST' A L]

HILITES

XTAL

~NOVEMBERVOL. VII

1946VOL. 7, NO. 9

s"lIlte"lIlIds

wit" someold 1,lelldslit /Jottomolpl/,e 9/

•XT AL CONTROL

Managing EditorJOHN V. ~, VE3QK

Editor-in-chiefT. G. E. PO,WELL, VE3ZE

Associate Editor •)( I. H. NIXQ.,N, yE~ACL

Advertising ManagerA. H. GILLlER, VE3AZI

Business ManagerP. POSNIKOFF, VE3BBN

•OFFICERS

PresidentT. G. E. POWELL, VE3ZE

Vice-ores.R. A. MACDONALD, VE3AP

SecretaryI. H. NIXON, VE3ACL

TreasurerE. BARTMANN, VE3VD

•Under Secretary

L. HORSFALL, VE3AOS

Specie I RepresentativF. M. HAINES, VE3BCW

T. S. CARPENTER, VE3B

•Authorized as second class nmU.Post Office Department. OttIlWII,

1946 NOVEMBER XTAL ----------- s

•OFFICIAL PUBLICATION

of

CANADIAN AMATEUR RADIO

Published by

THE CANADIAN AMATEUR RADIO OPERATORS'

ASSOCIATION46 ST. GEORGE ST., TORONTO 5, ONTARIO,., 7 ~

TEL. Midway 8235 tl 0

•CONTENTS

6

7

9

10 IO-R 013 f!l12

13

Caroa National Report .. 1-'Yr- '7 ~ 0

HQ Happenings . 16

18

20

22

27

31

Editorial

Crysta I Substi tute .

We're off .

Portable and Convertible.

War Assets Special!

41 Meter Band

Dear OM

Club Directory

ARRL QSL Bureau

Errata

Ham-Ads

I EDITORIAl I

• • . let/PIe us not lie litis • • •

WE DON'T like to, keep complaining,about unpleasant subjects, but we

have it on reliable authority that off-frequency operation is becoming morecommonplace. Reports keep coming into us from all sections of the countrytelling of such practices, and there seemslittle doubt that few of the offenses areaccidental. To date, the 20-meter bandhas been the scene of most of the crimes,and the explanation is not hard to find.Certainly the set-up on this portion ofthe spectrum is such as to tempt eventhe most righteous. In the first place, ithas always been regarded as our primeDD( band, despite the ever-increasingchallenge of ten. At the present moment,only half the band is in our hands, andunfortunately it is the middle half, leav-ing a theoretically empty space 100 kc.wide at each end. In practice, however,'the two ends are anything but empty,being cluttered up with every knownvariety of the species DX, both phoneand CW. Under the circumstances, it isnot surprising that the hams of NorthAmerica should fail to see how 14,000-14,100 and 14,300c14,400 could be of anyuse to the military services of any coun-try in view of the existing QRM, and itis not uplifting to note that a goodlynumber of the foreign signals are of theGI variety, presumably operating withthe permission of the U.S. .Government.Further contributing to the general chaosis the domestic QRM in the portion ofthe band currently open to us, which fre-quently results in situations whereVE6XXX finds himself frustrated by hisinability to work a certain PU9 who ishimself coming in so clearly, exasperat-ingly free of any interference. After thiscondition has prevailed for some time(the boiling point varies with individ-uals), Old Man Temptation sorta nudgesthe VFO dial and before you know it,you're working said PU9 with no troubleat all. It's so simple and effective, andother fellows have been heard doing it,

so why not? Well, we feel it our duty totell you why not. Firstly, it's illegal.It's little satisfaction to look at a DXQSL after your license has been removedfrom the wall. Secondly, the D. of T. isgetting wise to the fact that all is notwell at times, and the number of offend-ers spotted is going up. Thirdly, everytime you do it you get marked down insomebody else's log as a stinker. Fourth-ly, defying our regulations is not the bestway to further amateur radio in officialcircles and get us more privileges, andthat applies whether the regulations con-cerned appear just or unjust. And thatlast reason is why the CAROA is so hetup about the subject-we're working forthe good of a large number of amateurs,and we don't intend to see our effortsnullified by a morally unconscious min-ority. That's why we appealed to hamswith reasonably accurate frequency-measuring equipment (such as the cali-brator out of a No. 19 set) to act asOfficial Observers. We still feel thatthis is a problem that can be dealt withby the hams themselves, rather than waituntil the D. of T. cleans our house for us.We'd personally like to have a file of"caught-in-the-act calls" here at Head-quarters for possible future reference, soif you hear any obvious infractions tak-ing place, let us have the details. It'snot just "carrying tales" to do so; on thecontrary, it's in your own interests.

0'----

WE have often wondered if somehams get as much fun out of their

hobby as they could. For instance, weknow of some who have occupied onefrequency for so long that it must beworn hollow. Granted, this is their priv-ilege, and in many cases it is the resultof geographical, physical or financiallimitations, but in others it may possiblybe mental inertia. A transmitter whichis capable of operating phone and CWon any frequency in our major bands is

QSY to page 30

ic *

A useful 6 x 10 x 12 inches.

,

Crystal SubstituteA Variation on the VFO-ECO_TheIne

With' Corrrporie rrts, Price, and Labour MiniInizedBy Stan Moir VE3AQB*

VE3AQB's success on all bands is duein no small part to the unit described

in this article. It is simply a substitutefor the crystal and is used in conjunctionwith the regular exciter of any trans-mitter.

In perhaps a hundred percent of theoscillator stages now in use by VEs, acrystal is used. This gadget, at theauthor's QTH, is merely plugged intothe crystal socket and used at the oper-ating position where QSY is easilyaccomplished with a twist of the wrist.

The writer claims no originality ofdesign. From files of Q8T, Radio, andthe Handbook the composite baby wasborn. It is unorthodox in that thedoubler coil is untuned just as the circuitin the grid of the erstwhile crystaloscillator. It covers one band, 3.5 to 4mc. in three sweeps of the dial and themethod of keying and the, floatingchassis were taken from Henry Rice"sarticle in QST of January, 1941. Iwanted to simplify the bugaboo of bandhopping, so doubling in the exciter Wasplanned. Thus for use on 80 the output*92 Elizabeth se., Chatham, Onto

of the unit described herein is on 160.The doubler coil. however, is, switchedin for all other hands.

Built on a Hammond 1442 chassiswhich measures 6 x 10 x 12, the powertransformer, rectifier, and, regular tubesare mounted along the rear, along withthe doubler coil. The paper elec-trolytic and bleeder resistor are mount-ed below deck. From left to right onthe lower front are the ONIOF'F switch,Key Jack, and Output Change Switch.Everything else is mounted in a smallaluminum box which will be noted in theillustrations, with the 6F6 oscillator tubehorizontally attached thereto. This, smallaluminum shield box is resting on spongerubber (taken from old vibrators) andis grounded through the keying jack.The cover isa Hammond 1452 with cane-work-like ventilation, cut away to fitover the calibration dial which,as maybe 'seen in the photos, is mounted 011the shield box with brass standoffs.Protruding from the left of the shieldbox is a long shaft controlling thebandspread switch. Ample clearancel 6 NOVEMBER XTAL 1946 ..•"., 1946- NOV,MBER XTAL 7

VR-105-30

VR-I05-30

.,"

r--~H~::~~~_------------------------:-------------l---1,,

~

I OUTPUT

C,I' JXfh5f6D

I 52 XTAL SOCKE:Tit-Le,. PLUG,,1 L3

-'-~-~-~--1-J~'•.

Schematic far Crystal Substitute.

Cl-lOO mmfd MicaC2-200 mmfd MicaCS-lOO mmfd VariableC4-500 mmfd MicaC5-250 mmfd MicaC6-l20 mmfd (Neg Temp Coef)C7-l00 mmfd MicaC8-C9-ClO-.Ol mfd. paperCll-100 mmfd MicaC12-.00l mmfd MicaC13-C14-8 mmfd, 450 volt electrolyticRl-100.000 ohm 'hWattR2-2500 ohm 10 WattRFC-2.5 mhy RF Choke

CH.~50 Hy 30 ma. Choke (Hammond 156)T-Power Transformer

,240volt 40 ma.-sec.5 v and 6.3 v windings (Hammond 270)J-Closed circuit keying jack'81--3 position single pole switchS2, SS-,S.P .S.T. toggle switchLl-26 turns 22 DCC wire on % inch dia. former

spaced 1 inchL2-3 turns nee wire wound over the first 3

turns of LlLS-SO turns 24 enamel wire on 1% inch form

close wound on octal tube base

through the side for the shaft should beallowed for free movement.

Very little drive was required, andwith always an eye to simplicity weomitted some of the refinements. Itshould, however, be mentioned that asingle-pole, three-position switch with

good wiping contacts be utilized. Theoutput plug, which in our case was alittle tube base plug, should be markedfor proper positioning at the crystalsocket of the exciter. Twisted pair willserve as the link. There is plenty ofbandspread on Ten and Twenty Meters

Gadget with ventilated cover removed.

Rear view showing placement af parts asdescribed in text.

•even though one inductance coil is used.When used on 40, 20, or 10 it has 300mmfd. more capacity across the gridtank which makes for better stability.Keying at ,high speed offered no diffi-culty and was accomplished withoutchirp. Phone signals were reportedsteady and in most cases with less driftthan crystal control. T9 with CW wasalways the report.

This unit is in use at 3AQB controllingthe 6F6 oscillator on 80; and this in turndrives a 6V6 doubler or quadruplerwhich drives .a 6F6 doubler. The finalconsists of a pair of 813s.

A word about frequency coverageshould be of prime interest. Mica con-densers are not always the value incapacity marked on them. It may benecessary to try several inasmuch as Clis slightly under 100 mrnfd. ,to give bandoverlap. C2 is made up of two 100mmfd, condensers in parallel and mustbe just under 200 mmfd. With 81 inposition 1, the gadget tunes from about4010 Kc. to 3790 Kc. In the position 2,the ,tuning covers 3660 to 8490 Kc.These frequencies are approximate. Thelast position covers the 40 and 20 meterbands and a good portion of 10.

The outfit seems to be stable after a5 minute warm-up and remains thus for10 minutes. Slight drift may be noted,very slowly for 15 minutes, after whichtime it settles down and becomes steady.The first drift is from tube warm-up,the second from rectifier tube heat.Eliminaticn of the second drift couldbe accomplished with insulation such asasbestos placed between the shield boxand rectifier tube.

Careful design and wiring will paydividends. And in closing let us stressthe fact that calibration should bedone with a frequency standard, onlyafter a long warm-up period.

We~reOff! Received CAROA

Hq. Nov. 1st. 1946

Excerpt from official notice follows:

" 7,000-7,300 confined to telegraph and 14,000-14,400telegraph with restricted telephone pr.ivileges 14,150-14,300kc stop decision to extend present telephone band by 50 kconly will be reviewed before granting next year's licensesstop similar release being made in United States with tele-phone privileges restricted to 14,200-14,300 kc ... "

1946 9NOVEMBER XTAL ----------

Portable

And ConvertibleA low power inexspensive portable

transmitter and receiver for thewide open spaces

By EV. BROWN, VE3AHV'<

IN EARLY August the writer decidedto build a transmitter and receiver cap-

able of working back to the home townfrom his forthcoming holiday location.The distance involved would be approxi-mately one hundred and forty miles froma point fourteen miles north of Hunts-ville, Ont-, to Toronto. As only two weekswere to elapse before leaving for the cot-tage some speedy design and construc-tion work was necessary.

A carrying case was found largeenough to accommodate a rig ten byseven by four inches. An eighty meterphone and CW transmitter and receiver,operating from batteries, were requiredto fit into this space. Meter switching,*-79 Boustead Ave .• Toronto, Onto

Class B modulation, antenna change-overand multi-stage crystal control togetherwith simple phone-CW and transmit-receive switching were desired.

In order to reduce the size of com-ponents and to simplify the installationthe use of twin triodes was investigated.It was found that one such tube wouldserve well as the R.F. portion of thetransmitter, a second as the class Bmodulator, and a third as a receiver. Asingle trio de was necessary as a speechamplifier. An examination of all batterytubes in the manual disclosed that therequired types capable of taking the mostpower were the IJ6 and 30.

The transmitter and receiver circuits

•Picture does not do justiceto this efficiently and com-pactly constructed portable.

••

10 NOVEMBER XTAL 1946

••

v

were conventional in every respect andno originality is claimed on their behalf.

The receiver consisted of a IJ6 as aregenerative detector and audio stage.The output was designed to work intocrystal earphones and was found unsuit-able for the average magnetic phones.If the latter are to be used a slight modi-fication can be made to eliminate theaudio plate choke and condenser and toreplace them with the magnetic phonesin the B positive lead. Exceedinglysmooth regeneration was found on testand some noise was eliminated from thetuning condenser by grounding the rotorthrough a flexible lead instead of relyingon the slip ring contact.

The transmitter R.F. section was simi-lar to one which appeared in QST someyears ago. One triode of the IJ6 is usedas a crystal oscillator stage and thesecond triode as a neutralized amplifier.

L,

Neutralization was accomplished by ob-serving any tendency toward instabilityin a communications receiver and tuningthe padder until this disappeared. Thisadjustment was not found to be criticaland little tendency for the final to oscil-late occurred in any position of the neu-tralizing condenser.

The antenna links on the receiver andfinal amplifier coils were wound to loadinto a half wave doublet fed with sixtyfeet of Amphenol 75 ohm feeder. Thespecifications given should be satisfac-tory in loading most doublets but im-provement may be obtained in individualcases by "cut and try" methods.

The speech amplifier and modulatorcircuit was of straight forward designwith the input arranged for one of thenew Shure single button carbon micro-phones recently released by War Assets.

QSY to prkge 28

M.G.

Rl-250 K midget volume control.R2-R5-R6-30 ohm '12 watt.R3-10 K 'h watt.R4-1500 ohm Yz watt.R7-2 Meg. ohm '12 watt.R8-R9-10 ohm adjustable 20 watt.R10-250 K V2 watt.Rl1-50 KYz watt.T1-Mic. transformer Hammond type 131.T'2-Input transformer Hammond type 135.T3-Modulation transformer Hammond type 435.CH1-Audio Choke Hammond type 151.C1-C4-C5-140 mmfd Hammarlund variable.C2-.0001 mfd mica.C3-C6-3-30 mmfd trimmer.C7-.00025 mfd mica.CS-lOO mmfd. Hammar-l und variable.

9--.001 mfd. mica.10-.01 mfd paper.

LIST OF PARTSRFG-2.5 mh RF choke.Sl-S2-Double pole double throw toggle.S~Federal anti-capacity switch.S3-Yaxley meter switch.Ll-26 turns no. 26 enamelled wire close wound

on 1f2" dowel.L2-36 turns no. 26 enamelled center-tapped.

Close wound on %" dowel.L3-8 turns wound in center of L2 which is split

at tap.L4-75 turns no. 26 enamelled close wound on %r"

dowel. Tapped 20th turn from ground end. 'L5-25 turns no. 26 enamelled close wound on :u."

dowel.L6-13 turns no. 26 enamelled close wound on %,"

dowel.Note-L2 and L3 wound on same form with wind-

ings 'spaced %".L. L5 and L6 wound on same form withwindings spaced Vs".

1946 NOVEMBER XTAL ----------- 11

Wlt""1

DON'T TURNTHAT PAGE!

Adams is back again withanother scream er. ReadingTime: 10 mins.

ALFRED is one of those guys who be-lieves anything. He came bouncing

into the shack the other day to announcethat War Assets was selling surplusHRO's for $10.00 each.

"But you've got to buy a case of 813'swith each HRO," Alfred said, blinkingthrough thick glasses. "It's all part of agovernment plan."

"In which case I'd have nothing to dowith it," I told him. "Have you everheard of a government plan that workedout for anybody but the government?"

"They also have surplus signal gener-ators," said Alfred seriously.

"What do you have to buy to get one?"I asked him.

"I'm not sure whether it's a D.F. loopfrom corvette equipment or a keg of1-megohm resistors."

"The last part sounds like the govern-ment," I told him. "They probably havea building in Ottawa filled with thou-sands and thousands of kegs of 1-meg-ohm resistors. And with this housingshortage, too!"

For some moments there was silenceand I imagine Alfred was thinking ofvarious ways of using 1-megohm resis-tors. He must have worked out some-thing pretty good because the next thingI knew he was fumbling through myphone book. "I'm going to call themup," Alfred said, "and find out whatthis is all about."

This will be the showdown, I thought.It will reveal once and for all if WarAssets has got any ham stuff and whatthe score is. I decided to listen withinterest.

I won't try to recall the next fifteenminutes. Alfred kept phoning and phon-ing and I finally gathered he was tryingto reach a Mr. Glunk. It was like call-

War Assets

Special!By ERIC ADAMS, VE3ALG

ing DX, I thought. The chances are slimbut you must have to keep at it. Finallyhe got the right department and some-one told him Mr. Glunk was out for lunchwhich I couldn't quite fathom because itwas four-thirty. But during' the nextten phone calls Glunk must have comein because the next thing I knew Alfredwas talking to him.

"Hello," said Alfred pleasantly. "Howsoon could you deliver an HRO?"

Glunk apparently told him he had thewrong number and the two of them hadquite an argument. Alfred, who is some-what excitable, kept shouting, "This isWar Assets, isn't it?" and Glunk, as Ilearned later, kept asking for Alfred'sExporters and Importers license numberand if he had ever been registered as anenemy alien.

During the rumpus I decided to slipdownstairs and listen on the other phone.I knew Alfred would be too excited toremember half of what he'd heard andso I figured a bit of monitoring was inorder. When I started listening Alfredwas talking.

"Why can't you send me one of those16,000 HRO's then," he said. His voicesounded kind of hopeless.

Glunk's voice was cheerful and vibrant."They have to be sold as a unit," he said."W ould you care to buy all of them?"

"That's too many," Alfred said defen-sively. Mentally I put it down as theunderstatement of the year.

"Well, buy half then," Glunk said."You can do that, you know, if you'lltake a 100 year option on the other half."

I heard Alfred sigh. "Let's forget thereceivers, Mr. Glunk. 'What have you gotthat I can buy without taking a truck-load?

"Condensers!" said Glunk with great

12 NOVEMBER XTAL 1946

,I.

emphasis. "Only this morning we re-ceived a special Release Order from theCapacitor Controller at Ottawa."

"All right," said Alfred. '''I'll take halfa dozen 4 mfd 2000 volt jobs."

"Sorry," said Glunk promptly. "Theyhappen to be rated as a Class 1 Excep-tion. You would have to write -to Ot-tawa and enclose twelve copies ofForm 2B."

"Make it 2 mfd," said Alfred heavily."Anything from 1000 to 1500 volts willdo."

"Unfortunately they're covered by aspecial Restraining Order," Glunk said."A condenser census will be taken in1965 to determine their LegitimateMarket Value."

"What the heck have you got," saidAlfred.

"Do you want any 400-terminalstrips?" Glunk asked.

"N 0," said Alfred."What about an apparatus for scramb-

ling speech.""I can do that now," said Alfred, "with

just an ordinary transmitter.""Could you use a clock that rings a

bell and closes a circuit every twominutes ?".

"I could use something that closed acircuit on about half a ton of dynamiteunder your building," said Alfred withsome heat.

"Dynamite is rationed," said Glunk.You could tell he'd been through all thisbefore.

There was quite a pause and thenGlunk's voice came again. "Do you wanta complete transmitter," he .said, "They'requarter-kilowatt jobs. Boxed and brandnew. You can buy any quantity at $25each."

"That's the first sensible thing you'vesaid," Alfred told him; His tone wassomewhat suspicious.

"We aim to please," said Mr. Glunkmildly.

"What's the nature of these trans-mitters ?" Alfred asked.

"I haven't got that data here," Mr.Clunk said, "but I'm sure you'll findthem OK. We sold some quite a while1lP;0 and we haven't had a singlecomplaint."

"Do they work on the ham bands?"naked Alfred.

"Why, yes, indeed," Glunk told him.HO therwise I wouldn't have suggestedI horn to you."

HI doubt that," Alfred said, "but I think

1946

you can send me one."There was the sound of much scrib-

bling. "I have to make out everythingin quintuplicate," Mr. .Glunk explainedpleasantly.

"That's all right," said Alfred, "butdon't send me five transmitters."

Alfred's new rig came the other day'.He'd told the whole ham neighborhoodabout it and we were all pretty inter-ested. In fact we even stopped kiddinghim and were getting ready to admit thathe'd scored a bit of a scoop. But as hepried the last board off a big box andpulled off a lot of oiled paper it .was adifferent story. There was the neatestspark rig you've even seen. Completewith rotary gap, all kinds of brass,sliders and tapped coils. It was plainly arelic of the first war, although maybenobody at War Assets realized it. Maybenobody at War Assets knew about theFirst War. ' .

.Alfred is a mild guy but what he saidcan't be repeated here.

"What did you' have to buy to get it?"I asked him. " '

He glared slightly and then .said,"Nothing."

"Oh, I thought maybe you had to: takea free HRO or something like that,' Itold him. But Alfred was making such' aracket nailing the boards back on that Idon't think he heard me.

The 41-Metre Band

THE use for broadcasting of fre-quencies in the 7 megacycles-per-

second (41-metre) band has been ques-tioned in letters to the BBC by amateurradio experimenters in North and SouthAmerica. They imply that, as this bandwas allotted exclusively to amateurs,broadcasters had no right to use fre-quencies within it.

The complainants appear to have over-looked the revised allocations of fre-quencies made at Cairo in 1939. Underthe Madrid regulations of 193'2,the wholeband from 7,000 kc/s to 7,300 kc/s wasreserved exclusively for amateur use,but under the Cairo Conference regula-tions, which became effective on Septem-ber 1, 1939, the band from 7,200-7,300kcls WaS! shared between amateurs andbroadcasting.

While, therefore, the BHC is justifiedin using these frequencies for its broad-

QSY to page 80

NOVEMBER XTAL 13

CAR 'OA

~A TI()~AL ~~V()~T

!I

I,VEl

DCM-R. J. Hesler, VE1KS, Sackville, N.B.-The L.A.R.C. members and some friends had thepleasure of meeting Mr. and Mrs. E. P. TiltonW1HDQ at the home of FL and AYL. New callsin the St. John area are: QL, RQ, RR, Ab, VBand VD. IL is active on 80 GW. IZ and FC haveIone operation on 3824 Kc/s with 807 running 50watts. RS is back on the air waves. GX is re-building his rig. GP has hibernated on 20 foneand Athens Greece is right in the path of his newbeam. LI is active on 80 CW over the week-ends.lE chats nightly with 2XA who was formerlyknown as 1BF. FC while on the way home with:a. large box under his arm, stopped and stoodlooking for a place for his antennae when his land-lady asked if he were catching pigeons at six cents.ner (Note, there is a war on pigeons in St. John)..KK is on ten all of the time, as his XYL who has'received her call (VE1MY~Mammy Yokum!) isnot permitted phone operation on other bands. ID~s working dx on 75 at 4.30 a.m. every morningand MA is doing the same. MA has a new tenmeter beam under construction and is now run-ning 200 watts on 75 with 812's. FGhas 813'sgoing strong on 75 and 20. IM is busy pickingapples when not hunting with KU or EA. Severaldeer were bagged by BC and ID on the openingday of the hunting season. DY and LG spent afew days at the LG hunting camp and huntingthe elusive deer. BW has been too busy lately formuch operation but expects to be on soon with 300watts. O'I' is a new phone station at Clements-port and sounds fb. GH is still rebuilding and isvery busy lately trying to produce some cover pixfor XT'AL. ES has a new Millen exciter. IS hasleft Sackville and has headed for VE3 land. QFputs one of the most consistant phone sigs aroundthe Maritimes on 75 but is too lazy to put his fbrig on 20 as he claims there are too many tunedcircuits. HV and his XYL spent a week-end atKS in October. Where is MZ these past fewmonths? LH has a new RME-45 and DB-20. LGlost a modulation transformer on his new Meissnerxmtr and is having difficulties obtaining a newone. JW is putting a nice signal around on 75.HV worked his first Aussie on 20 during the firstpart of October, TP in Truro has 250 watts on75 fone.

73 fer nw .gang and please keep up the goodwork on sending in reports.

VE2DCM-C. W. Skarstedt, VE2DR, Montreal, Que.

-Your reporter apologizes most humbly for pro-longed silence, but you know: business, writer'scramp AND silence from all you chaps; almost!2AO with a perpetual smile who slides around thecountryside aplenty has' ~qlmlied some useful hamchatter. Watch out XTAL J.I 2II, editor of localclub's uSKYWIRE" is turning out a swell sheet.AFB op too who carries more skeds than all therest of the lads put together. A quick QRX onthe 80 fone band (Canuck sect.) reminds one of aPeace Conference session! Surely gang, the otherguy can't be that bad. Foreign mails suggest that2LQ and 2DF (Mont Jol.i and Quebec City) arethe dx champs. It's whispered 2SA will soon putup a new folded diaper. 2BE and 2BG cheat the 20fone QRM by working tandem and doing rightwell too, VK's, etc. Judging from the last clubmeeting the CW men will get about .01% ofeach band if the fonies (is that the correct plural ?)

get their way. Now when the last of the corn isharvested how about letting us have some overthe air, 2GH and 2FR. They are the O.T. Lachutebrothers. 2QA, 2DD and the little lad,' 2HE arestill burning holes in the 80 fone band. The localFrench "net" isn't doing too badly either. 2BYand 2HV prove that QRP fone work is still pos-sible. 2HF got himself a swell Army rcvr and isnow tinkering with rotating beams; 2DR, nextdoor neighbour, almost, is soon moving to theLake Shore, reason obvious. The Hull gang is areal treat to the QSL Manager; take a bow 2SD,2GP, 2RA and nearby 2GA. Local AFARS CWnet finally got under-way with 2PZ, 2FG, 2XX,2MU, 2AX,2SM and 2DR being active members.But listen fellows, many, many more ops requiredto put this over the top, Drop us a line andwe'll let you have the details. 2VL, 20 fone andCW, snatched VS7ES. (The QSL Mgr. has al-·ready been offered 10 bucks for the card J) 2ILclaims 40 dx is good. What brand are you drink-ing, OM? 2GB at J oliette makes a pair of 812'sreally hum. 2UU hails from the wilds of Lake St.John District. So do 2DV and 20E. How's theOuananiche. fellows? 2UV took portable to moun-tains and ended up digging a well. Well, well.2DY plus 2NR, 2BB, 2FG and 2XN (nice fist new-comer) put Lachine on the map. 2UR helping2XX doing same at Dorval. 2KF and 2PQ atVictoriaville joined the CAROA. 2JO and 2DOpush out plenty of RF on 20 CW. Good 01' 10has a constant local following lead by 2JJ. Thedx harvest at times is quite good. 2XA at St.'fherese knows how to use a bug. Now. gang, ifyou want the other chaps to know what you aredoing, how about dropping me a line sometime.Reports will be more consistent if you do-Ipromise! And one more thing, I need a few goodops to help me out with the Canuck tfc net. Afew words on a piece of paper will reach me at3821 Girouard Ave., Montreal 28.

VE3DCM-R. C. Hunt, VE3WX, London, Ont.-

AT'R looking for traffic 3538-3734-3602. QB on 10-20-40-80 fone and cw Dx-ZS4H, HB9AW andcouple VKs. Says lot of QSLs on file for gang.FP spoke to Frontier Club on FM. BZ too busywith chickens (feathered) to attend club. 01 hasnew rotary. CP has his rig on air with hay wireantenna. In charge of Cadet signallers. Wonderwho teaches them code. WA sporting a new carand looking for an invisible antenna. AEP-XG andQL have new beams erected. BGF had visit from4TG. GP is looking for members of a phonetraffic net. Any phone men interested pleaseQSO Tom. BLE reports doings of Leaming-ton boys. Says T'M rebuilding again. TT re-ports via radio. ASR has army type 19 set.BHU reports via radio. AGT has trouble withharmonics. BFP at Western U on P.G. course.Ex VE4ABC. BJT' having code troubles. BGWhas a new lot of QSL cards. HI getting his throatretreaded in preparation for Winter DX. BEVcan you climb that 65-footer Hobbs. QT an old-ttmer who will be with us again soon. QK his sixwatts sounds like 600 down here. BDX WAC on20 and 10 this summer. BKM, AOR, DC, BHX,XZ, AND, BFF, ARM, and KM are on six metersfrom Hamilton. AOO and AJP competing withWX on low end of 80. GB still waiting for hisSignal Squirter. DU on seven me also t4 and 28mc. NI Jim back on air. Peterboro Club startingcode practise sessions and instructions for begtn-

NOVEMBER XTAL 194614

A

''If

ners. The Eastern Canada phone gang had a Heldday QSOing a VO that strayed into the phoneband. WX finally has an antenna perking on 80fellows so will be looking for reports via radio on3506-3523-3529 and sundry other frequencies. Ifits only a card detailing activities it will be wel-come. Have some C.T'. appointments to make andwill welcome applications for T.R.S., etc.

UD has already wrkd VK's with his fb 50 watterand is still looking for more, (the hog) on 20,when he has time. YZ was welcomed back onwhen he poked his nose out of his hole on 20 withan 813, imagine tt, but he Claims no one canhear him, with that signal-Wo-W (now I'll tellone). AML was on ten fone but must of falleninto an open manhole, anyway he ain't on now!BCD, BCN, BDY; ZZ, JA, LC, BLM and acrossthe banks of the beautiful Ottawa River we have2TT, GP, SD, GA, RA, XE are all active on tenf'one, and their neighbour's set working round-tables, when they aren't out with a net trying tocatch that elusive ten meter DX. LC has a beau-tiful double rack all-band rig using PP813's (nobugs) and is really getting out on fen with his'four element (pardon) rotary beam. BCD is "con-templating" rebuHding! What are you keepingthose 35T's for Alf.? BCN has one of thoseAR88s, and swears by and at it-so's LC. JA upin Braeside about 45 miles, is working and beinghrd regularly in Ottawa by the boys on TENFONE! What do you think of that you two andsix meter addicts? BCO is wr king DX· by thebushel with his "V" beams abt 300 feet on a leg,whew, and his brother KE is giving him stiffcompetition without the beams. BDX is swatting600W around on 20 with his bug.

We have a new ham in Belleville, Doug. Vander-water. VE3BLY, running 50 watts on 40 mtr CW.XQ has a new job in Ottawa. He just completedputting up two 70 ft. masts, and now has to leavethem behind. Local hams are all wondering howthey would look in their respective back yards, HI.AJS and AAJ have been bitten by the six meterbug, and are planning a visit to AZV at Oshawa,to be sure of getting started on the right foot.RW tried to grind some xtals for 20 m, but outof three tries only got one to work. AOP plansto get going with a T55 on 75 mtrs, but a trip tothe hospital has slowed him up temporarily. AARhas moved his QTH to Stirling, Ont., and has aswell spot for a skywire. ADJ is rebuilding forall bands. EG has rejoined the R.C.A.F. and istaking a course at Clinton, Onto BJE, PH, FI,ALU, have six mtrs Transceivers which work fbfor local Rag ehews and PH, BJE and BGI tookour rigs to one of the local mines here and BJEand ALU went underground 2,900 ft. to see if thesix mtrs rigs would work from there to the topbut we found out they would not work-that iswe got no signal from surface and the rigs on thesurface got no signal from us .underground, Therigs work OK underground from joint to joint.To enable the members of "A" Flight of the WestToronto Squadron to become better acquaintedpersonally it was decided to hold a dinner andgeneral rag-chew meeting on the night of Mon-day, October 7. Arrangements were made by ArtFerguson, 3HP, that we should eat at the Stood-leigh Restaurant on King St. (plug!) and thenadjourn to the home of Keith Ruaaell, 3AL, forthe balance of the evening. After a deliciouschicken dinner which was gobbled down by thehungry mob we made our way to our rendezvousat 3AL's and sat down to a good old bull session.The members present were: AL, BC, HP, GN,ADR, AEM, AVA, AZA, BCC and the West To-ronto Auxiliary Squadron Controller, AHV. Un-fortunately AYE and our original Flight Leader,AAG were not able to attend but were toasted inabsentia. Pro's and Con's of the organization werediscussed and considerable enthusiasm was shownfor the coming season's activities. It was reportedby the Chief Controller, AL, that membershipcertificates were now available and would be issuedto members without delay. The Transcontinental'I'runk Line has been changed to operate on 7250kc. instead of 3625 kc. as it has been decided thatthe higher frequency will be better. This trunkwill open on October 20. During the evening we

all were put "on the air" over AL when a sbortbut enjoyable contact was had with "Steve"Stevens, 3BFX, in Ottawa. The matter of a phonenet was discussed and it was decided that such anet would be put into operation as soon as therewere sufficient applications. 'I'he number ofmembers in the CW net. is growing all the timeand we may soon have to start a second flight.More out-of-town stations would make these netmeetings much more interesting and it is hopedthat .hams will take sufficient interest in thisactivity to come in with us. The session wound uparound midnight and the boys headed for home tohit the hay or work some late dx. Thanks isexpressed to HP and AL for their fine co-opera-tion in making our first gathering such a success.CUL. What, no TFC reports?

VE6DCM-W. C. Savage, VE6EO, Lethbridge, Alta.-

SW is now putting a good sig. down to Chan-cellor, why? EL is going to move into new qthwith two 50 ft. antenna poles. Camrose AmateurOpr, Club is putting on a dinner in honor of PopLanebell who got his ham ticket. He is to bepresented with a bug by BW. NF now has hisantenna working, Hi. TY should soon be on theair. TK is back in Calgary and is on ten mtra.AW has sold his rig and is through with hamradio. Sez him. His XYL has other ideas. FKjust about burns up his modulation transformerwhen his excitation failed. KK is radio serviceman for C.P.A, IX is putting out a good fonesig, with batteries and gets three geese on hisearly morning shoot. TM is working on 20 mtrswith a broken beam, Hi. KI going big guns on80 CW (pr , 813). DA is active on 80 CW. JJ isactive on 20 ·phone. NA is postman. He shouldknow where to deliver the boys' Q'SL cards. Hi.VS is building a new F.B. xmtr. LJ is installinga commercial job in Medicine Hat. OD is verybusy with a vfo and also fixing up his house.OG is busy putting up new antenna masts for5KW job. (Commercial Hi). Don't be alarmedboys. MN is still pumping out R.F. on 20 mtra.and working some nice DX. XX has a 75 fonerig going now. HZ is busy with stamp collectingin between QSOs. LQ has new job now as archi-tect and building Supt. for Edmonton public school.LA is heard on ten mtr. fone going big guns. EVis busy putting up a ten mtr. rotary. the wrongthing rotated, a piece of angle iron he was drillingswung around and hit him above the eye. AA hasa new rotary beam but is having trouble feedingit. IC is busy building up and E.C.o-. driver unit.

VE7DCM-D. E. McLennan, VE7JY, Vancouver,

B.C.-ADL is going strong at the airpor-t here,working plenty of stuff on 75 meter fone. Keepsa regular sked with the boys at the coast whenhe's not on shift for the D.O.T. ADH is on 75meter fone, and has hopes for a high power rigshortly, having collected a pair of 813's. However,please don't mention R.M.E. receivers. he's liableto blow his top. We've seen two up here, andboth are lemons, including ADH's. FG, an old-timer around here works all bands. We hear Doecalling plenty of DX on twenty, then hear him on75 meter fone. AEV is plenty active on 80 meterCW. LI is not active these days, but probablywill be in the near future. ex-5CP has visions ofham days again in between repairing "juke boxes."Has just purchased a Hallicrafters SX-28-A and aPanadaptor. Also has his eye on a factory-builtrig. Says he's through with building his own.DV is on 75 fone and 80 CW, now and again.Has an 813 in the final.

VESDCM-Jack Spafl, VE8AS, Whitehorse, Y.T.-

From Whitehorse gang. AY has new HQ 129Xcoming np and hopes to be able to work all theDX that calls him. Has added BM, PA, ON, D.GM to his ever-growing list of DX. AN returnedto town for a few days' before GG on holidays.

QSY to page 30

1946 NOVEMBER XTAL 15

HEADQIJARTERS HAPPEN/NIS

WE HIVE IN EMBLEM. T~e task of choosing a design .for the Associ-ation emblem has at last been discharged to our

satisfaction, and we hope to yours. Alongside we are presenting a .preview of thewinning entry.

~

It is the brain child of F. C. Symonds, VE3WT', who, like' severaldozen other loyal hams across the country, devoted a great deal of timeand effort to the problem, and we were very happy indeed to present him

with an 813 as a token of our appreciation. The Executive felt that his design cameclosest to meeting the obvious specifications, namely, originality, simplicity, "eyeappeal", and a certain amount of symbolism. CAROA is prominently displayed on theradio symbol for a crystal, illustrating the manner in which iXTAL acts as the As-sociation's medium. The central design is enclosed in an eight-sided figure, repre-senting the CAROA's affiliation with the eight Canadian call districts. Another fea-ture which we had to keep in mind was the adaptability of our ultimate selection forconversion into lapel buttons, rings, etc. We feel that VE3WT's design will lend itselfadmirably to this purpose, and in fact we have already made arrangements to havea quantity of lapel pins manufactured. They will sell at the reasonable price ofseventy-five cents each, and will be sterling silver with the crystal embossed in red.Orders will now be accepted, but delivery cannot be made until around the end ofDecember. .. . Our sincere thanks go to the large number of hams who took thetrouble to submit entries. Most of them were commendable to say the least, but in thefinal analysis certain flaws became apparent. For example, several designs filledevery requirement but unfortunately buttons made from them would have to sell at aprice running into several dollars, and this appeared to us to be ample reason fordisqualification .... We hope you will like our new emblem. Look for it often inXTAL, on stationery, and wherever hams congregate.

VE3CIIR 1I01llN IICT/VE. By the time this issu.e of XTAL reaches you, wehave every expectation that our Headquarters

station will be on the air again. Credit for this goes to VE3HC of Guelph (see insidefront cover) from whence has come, on indefinite loan, a very handsome transmitterof approximately 100 watts rating. Designed primarily for 75 and 20 phone, it uses a41 crystal oscillator, 41 doubler (used on 20 only) and an 804 in the final. 6L6's inClass AB do the modulating, VE3QK will see to it that VE3CAR is kept on the air,so look for the station on 80, 40 and 20 CW as well as 75 and 20 phone .... We shalltry to arrange operating schedules in time for publication in the December issue ....The Association, needless to say, is more than a little grateful to Fred, Len and KenHammond for their assistance in putting the voice of Canadian amateur radio back onthe air.

CODE CllI$IES. We have b~en ta~en to task for our failure to im~lement our1945 promise to inaugurate code classes for beginners. We

must admit that due to the pressure of more urgent affairs we have not been able toundertake thfs. program. However, code classes .are a vital factor in assisting hams-to-be in getting their licenses, and we would respectfully suggest to those local radioclubs who don't hold classes already that they get a series under way this fall. Wewould also like to have information from club secretaries as to dates and times forpublication in XTAL. Those interested in having code practice should contact their

QSY to page 27

NOVEMBER XTAL ---------- 194616

)tl \

~

No. 5 g,f a Series

Initialive-Resourcehslneu-(oopera,ion

c. '0 advance the interests

of the industry

I.R.C. rag-chewswith Xl AL readers • • • • •

advisable to operate them well belowtheir ratings in order to keep thetemperature low. Use a BT - 1 orBT-2 for voltages up to 500, andtwo BT-1 's or BT-Z's in series for1000 volts.

For measuring currents greaterthan 1 milliampere, a shunt is con-nected across the terminals of yourmilliammeter os that only 0 portionof the current flows through themeter. The resistance of this shuntequols resistance of meter divided by(N-1 ), where N is the number of

times you wish to increose the full-scale reoding. For instance, supposeyou find your meter has a resistanceof 45 ohms. If you wish to multiplyits full-scale reading by 10 you willneed a 5-ohm resistor. For smallcurrents on IRC Wire Wound TypeSW in 5 % tolerance will make asatisfactory shunt, or the more ac-curate Type "WW".

To switch various shunts of thistype across your meter, use a switchof low and constant contact resist-ance-otherwise your colibration maybe seriously affected. By this meansa single meter will serve to meosureeverything from grid current to thefull plate current in the final of yourtransmitter.

This brings us to the use of thismeter in measuring (or rather, in-dicating) RF. There have beennumerous articles in omateur hand-books and magazines on constructionand the use of simple field strengthmeters. This meter will tell you morecbour what your rig is doing than anysingle instrument you can own.

1946 NOVEMBER XTAL 17

I' ~ 11

Just about the handiest instrumentyou can have around the shack is agood 0-1 milliammeter with the fol-lowing accessories: (1) A few ac-curate resistors, fixed and variable.(2) A type 30 tube orl G4G tube

with miaget 11 A", "8" and IIC" Bat-teries. (3) An understanding of themany applications of this multi-pur-pose instrument.

To make a DC voltmeter you willneed a resistor in series with themilliammeter whose ohmage is1000 times the full scale voitage-that is, a 10,000-ohm resistor willmake a 0- 10 volt meter, 1 megohmwill make a 0- 1000 voltmeter.

We have manufactured for someyears now Precision Wire Wound Re-sistors for such service. They arenon-inductively wound with lowtemperature coefficient wire ongrooved Isolantite forms, are wellimpregnated and finished, and arenormally supplied to plus or minus1 % accuracy. On special order theycan be supplied to tolerances as closeas plus or minus 1/10%. You willfind the type "WW" units carried byyour jobber simple to mount andworthy of a place in your most ac-curate measuring equipment.

If 1 % tolerance is not required,we would suggest the familiar TypeBT, Insulated Metallized Resistors.These resistors have been developedto a 'state where they remain reason-ably stable over long periods of time.We have made these units availableto the jobbers with a plus or minus5 % tolerance, and they are youranswer to your need for serni-pre-

'cision voltmeter multipliers. It is

DEAR••

X'TAL assumes no responsibility for statements made herein by its correspondents.

BLITZKRIEGED 0 N 4 G N

Niagara Falls, Onto1991 CarIton Ave.

I am enclosing a snap of ON4GN'sformer Qra, in Tournai. This is what theGermans did to him when they wentthrough Belgium in 1940. On the back ofthe snap is written, in French: Qra ofON4GN, destroyed in 1940 by the boches.

As you can see, they made a mess ofhis house. All his equipment was des-troyed and, in fact, almost all hiswordly possessions. Fortunately, he andhis family escaped into the south ofFrance, where they remained until theend of the war. I received a letter fromON4GN a month or so ago, and he isitching to get back on the air, but is pre-vented from doing so on account of thescarcity of ham gear and the high pricesof the little that can be obtained. Hewould like to hear from any VE hamwho has used equipment to sell. His pre-sent QRA is: Bustave Leclercq, II Chaus-

see deLannoy, Froyennes, Hainaut, Bel-gique. You will have to write in French,boys, although his daughter understandsa little English. I have also heard fromON4ZYi he didn't fare too bad duringthe war, but says he is through foreverwith ham radio. Hmmmmmm!

Harold JoUiff, VE3IG

Phone For Ex-Servicemen4553 W. 12 Ave., Vancouver, E.C.

Editor XTAL:Who are these Official Quarters that

think the ex-serviceman should be giventhe restricted bands? You tell them tomake the regulations read one year'scompulsory CW and one year of ten me-ter phone before Class A privileges aregranted. The restricted bands should re-main restricted and not open to the pleathat you are an ex-serviceman .... Dowhat you like with this letter but please

QSY to page 22

NOVEMBER XTAL 194618

~~

CW MEN:YOU WANT ACTIVITY ANDPR GIVES IT TO YOUI

Chirpy signals ••• due to sluggish crystals ••• area thing of the pre-war past for amateurs who insiston PR Crystal Controls. Yes-PRs follow your bug athigh speed-on the highest frequencies. You get per-fect keying activity without sacrifice of crystal out.put by excessive "backing off." This means more ex-citation to the final, higher input potential. morewatts in the antenna, better final efficiency ••. cleankeying with the weights off!

PR Crystal Controls are unconditionally guaranteed.Low drift at all frequencies . . . less than 2 cycle.per MC. Accurate within .01 per cent. Exact fre-quency (integral kilocycle) at no extra cost! Gasketsealed against contamination. Stable under the mostsevere high power output conditions. Available forALL BANDS at your jobber now! Accept no subatl-tute! Petersen Radio Company. 2800 West Broadway,Council Bluffs. Iowa. (Telephone 2760)

~~

Harmonic oscillator. Ideal for"straight through" mobile opcrn-";'. 10 METERS tion. High activity. Heavy drlvo

••••••• .1 without damage in our special clr-

L_~~!?,!.~Z.:.~__~i':"_===-..:::::._;;::-;::.;-:;;.;:~~~Harmonic oscillator. Low drlrL,

20 METERS ~~s1~i~~~lU:H~'hnp~~e~e~~rpJt~

!~~~~:!=-__~~~.:."~~_~~!.~~d;'~~~~.I~1uRugged. Iow drift fundamental 0,.-

40 & 80 METERS cilia tors. High activity and poweroutput with maximum crystal cur-

PR Type Z-2. rents. Accurate calibration $8.60--------------------

CLUI3 ()112~CTUI2~CAROA urges Secretaries of Amateur Radio Clubs notlisted below to notify the Editor so that details may be

included in a future issue of Xtal.

A:.F.H.Q. A.R.C., Ottawa, Ont., W. J.Yeo, 3BFL, Room 3145, Lisgar Bldg.

Les Amateurs Canadiens F'rancais dela T.S.F., Montreal; Georges Forest,2EU, 6325 St. Denis St.

Annapolis Valley A.R.C., Berwick,N.S., A. S. Watters, 1FG, Union St.

B.C.A.R.A., Vancouver; Fred Taylor,7HA, 221-11th St., New Westminster.

Cdn. Lakehead Wireless Experiment-ers, Ft. William; Ray Greer, 720 SouthNorah St.

Central Radio Club, Toronto; L. J.Kerswell, 48 Vermont Ave.

Clinton A.R.C., Clinton, Ont., 3BER;T. A. Prest, 4MX, RC.A.F. School.

Dawson Creek A.R.C., B.C., Stan Car-nell, 7ALG, Box 1143.

East Kootenay A.R.C., Cranbrook, B.C.,J. G. Graham, ex-5NB.

Frontier Radio Club, Windsor, Ont.,G. D. Wood, 3AEP, 327 Ouelette St.

Halifax A.R.C., Ed. MacLaughlin,1JH, 78 Harvard St.

Hamilton A.R.C., C. O. Mogk, 3AXV,37 East 12th St.

Intercity A.R.A., London-St. Thomas,Geo. Sanders, 3QC, 671 Dundas St.,London.

Key Klix Klub, see Toronto AmateurRadio 'Club. .

Kirkland Lake A.R, League, TedBarker, 3ALU, 7 Baron St.

Kitchener- Waterloo R.A.C., Kitchener,ant. E. S. Stickney, 3QW, 183 King St.,N., Waterloo.

Loyalist City A.R.C., Saint John, N.B.Montreal A.R.C., S. J. Chapman, 2LV,

4711 Earnscliffe Ave.Newfoundland A.R.A., St. John's,

Derek Marshall, Box 660.

North Shore Radio Club, Whitby-Oshawa, Ted Brant, 3ADD, Box 427,Whitby.

Ottawa A.R.T.A., Ottawa, ant.Point Grey A.R.C., Vancouver, D. E.

McLennan, 7JY, 780 Beatty St.Progressive A.R.C., Fred Hammond,

3HC, Guelph, ant.RC.N.A.R.C., 1HQ, Halifax, N.S., L.

W. Holmes, 3HV, H.M.C. Signal School.Royal City A.R.A., New Westminster,

Fred Taylor, 7HA, 221-11th St.St. Maurice Valley A.R.A., Trois

Rivieres, Que., C. E. Robert, Ptre., 1729Boulevard des Forges.

Sarnia A.R.O.C., G. E. Hare, ex-3MW,291 Queen Street.

Scarboro A.R.C., K. H. Tripp, 160 Scar-boro Cres., Scarboro Bluffs.

So. Alberta A.R.C., L. Merriman,6VR,cl» CJOC, Lethbridge.

South Shore Wireless Ass'n., St. Lam-bert, P.Q., F. W. Grant, 2BI, 333 Mer-cilJe Ave., Montreal 23.

Thousand Is. A.R.A., Brockville, Ont.,H. Fairbourn, 3WG, 176 Pearl South.

Toronto Amateur Radio Club, (former-ly Key Klix Klub), Sid Prior, 11 CedarAve.

Totem A.R.C., Vancouver, B.C.U of B.C.A.R.O.A., Vancouver, Ralph

Gordon, 6150 Carnarvon St.Vancouver A.R.C., Tom Grant, 4535

West 9th Ave.Victoria S.W.C., David Scholes, 7DY,

1614 Pinewood Ave.West End A.RC., Vancouver, B.C.West Side Radio Club, Toronto. Ev.

Brown, 3AHV, 79 Boustead Ave.Winnipeg A.R.C., G. G. Williams, 4S0.

234 Sackville St. .Wireless Ass'n of Ont., Toronto; Art.

Potts, '3MT, 33 Haddington Ave.Yukon A.R.C., Whitehorse, Y.T., W. R..

Williamson, 8AK, Box 137.

NOY-EMBER XTAL ------------------ 194620

Here Are Four

(Jp" - Test Instruments

That Can Help You!

MODEL A.G.-l AUDIO GENERATORMODEL TT -1 TUBE TESTER

20 cycles to 20,000 cycles in three ranges.'Output sine wave with less than 2% dis-tortion. Output voltage flat within 2 db.Approx. 17 volts across 10,000 ohms. 115volts 25 or 60 cycles ... C.S.A. approved.

Won't become obsolete. Provision for test-ing emission. shorts, open elements and fortransconductance comparison tests. 115volts 25 or 60 cycles ... C.S.A. approved.

(On Left)

MODEL CT-l COMPAC-TESTER

Pocket size tester in sturdybakelite case 3"x6"x21h". Excep-tfona.l ly compact and rugged.0/5/25/250/1000 Volts d.c. 1000

ohms per volt.0/1,{10/100/500 ma,

2 ohms ranges with self-contained battery.

(On Right)

MODEL CT-2 COMPAC-TESTER

Same size as eT-! with mereranges. 200 Micro-Amp meterfor higher sensitlvitv - 31100ohms per volt.0/10/50/250/1000/2500 volts d.c.

and a.c.0/1/10/100/000 ma.

2 ohms ranges - 0000 and500.000 ohms full scale.

For Full Information See Your Jobber or Write to:

MEASUREMENT ENGINEERING, Dept.L1tHeodquorters for Test Equipment in Canada

ELgin 2881VE3AEC, VE3ASC, VE3AVM

TORONTO61 DUKE STREET

1946 21NOVEMBER XTAL -------------------

ARRLQSLBUREAUFor the convenience of American and

Canadian amateurs, the League main-tains a QSL-card distributing systemwhich operates through volunteer "Dis-trict QSL Managers" in each call area.To secure such foreign cards as may bereceived for you, send your district man-ager a standard No. 10 stamped self-addressed envelope. If you have reasonto expect a considerable number of cards,put on an extra stamp so that it has atotal of six cents postage. Your ownname and address go in the customaryplace on the face, and your station callshould be printed prominently in theupper left-hand corner. If you have heldother calls in previous years, submit anenvelope for each such call to the propermanager-there are many thousands ofuncalled-for cards in the files. All in-coming cards are routed by Hq. to thehome district of the call shown in theaddress. Therefore, cards for portableoperation in other districts should be ob-tained from the home-district manager.

WI - Jules T. Steiger. WIBGY, 231 Meadow St.,Willimansett, Mass.

W2 - Henry W. Yahnel, W2SN, Lake Ave.,Helmetta, N.J.

W3 - Maurice W. Downs, W3WU, 1311 SheridanSt., N. W., Washington 11, D. C.

W4 - Edward J. Collins, W4MS, 1215 North 12thAve., Pensacola, Fla.

W5 - L. W .. May Jr., W5AJG, 9428 Hobart St.,Dallas 18, Texas.

W6 - Horace R. Greer, W·6TI, 414 Fairmont Ave.,Oak land, Calif.

W7 - Frank E. Pratt, W7DXZ, 5023 S. Ferry St.,Tacoma, Wash.

WS - Fred W. Alien, W8AER, 1959 Riverside Dr.,Dayton 5, Ohio.

W9 - F. Claude Moore, W9HLF, 1024 HenriettaSt., Pekin, Ill.

WO- Alva A, Smith, W9DMA, 238 East Main St.,Caledonia, Minn.

VEl - VEIFQ will resume service soon.VE2 - C. W. Skarstedt, VE2DR, 3821 Girouard

Aveoo Montreal 28, P.Q.VE3 - W. Bert Knowles, VE3QB, Lanark, OntoVE4 - C. J. Campbell, VE4'CC, 276 Ash St., Win-

nipeg, Manitoba.VE6 - W. R. Savage, VE6EO, 329 15th St. North,

Lethbridge, Alta,VE7 - H. R. Hough, VE7HR, 1785 Emerson se.,

Victoria, B.C.VE8 - Yukon A. R. Coo P .0. Box 268, White-

horse, Y.T.K4, KP4 - E. W. Mayer, KP4KD, P.O. Box 1061,

San Juan, P. R.K5, KZ5 - Signal Officer, KZ5AA, Q u a r r y

Heights, Canal Zone.K7, KL7 - J. W. McKinley, KL7CK, Box 1533,

Juneau, Alaska.

DEAR OM-from page 18see that we have something to work forin the future, namely, restricted phonebands.

ex-Cpl, Ernie Savage, VE7FR

403 Water St.,Peterborough, Ontario

Editor XTAL:I have just re-read the Editorial in

September XTAL and am taking the li-berty of writing you my opinion on thesubjects under discusison.

It seems to me that the entire issuerevolves around the proposal to open asection of the present 40 meter CWband to phone operation and that thespecial privileges to servicemen aremerely a sideline as it were to this pro-posal. Being aCW man myself and onewho works 40 CW over 50'% of my totaloperating time, I object to the allocationof any of the 7000 to 7300 me. hand tophone stations regardless of the Class oflicense they hold. However it seems un-likely that any objections we CW menhave to phone in this band, will meananything. Therefore let's do all we canto keep stations other than Class A outof the phone section when it is finallyallocated. Our present 40 CW band is ter-ribly crowded when conditions are goodas it is without the addition of QRMfrom improperly operated phone sta-tions. It would seem to me that it wouldbe to the advantage of the phone menthemselves to allow only Class A opera-tion to reduceQRM in what is going tobe probably our worst QRM'ed phoneband. \ ,

As for the special privileges to ser-vicemen, let us strike any thought ofthis off the record. True, they did agreat deal to make ham radio possibleagain but I believe they are quite will-ing to learn the code, study theory, andtake the same .chances of flunking theamateur examination as the rest of usdid or will have to do. After all, part ofbeing proud to be a "ham" is the factthat it was necessary to pass an exa-mination to become one.

Ken King VE3AXQ

Vivian, ManitobaEditor XTAL:

Just finished reading September issueof XTAL which caught up to me hereand I felt I should back you up in re-

22 NOVEMBER XTAL ------------------ 1946

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Single carbon mike unit (capsule only) .•... .85Mica Condensers-6,000 v. (in ceramic) .002, .00025, .0005. Reg. $29.00 2.502,500 v. wkg •• 005-.001 @ .95, 1,100 v. wkg .. 01 mfd. .75250 mfd. 6,000 v. Hammond Cond., easily converted to split stator 9.50Midget 40 mmfd. 800 v. extended shaft _......... .85Midget 100 mmfd. 400 v. extended shaft .85Triplett 3" rd. 0-50 DC Mills . 6.80Sparton 3" sq. 0-100 DC Mills 6.80Sparton 2" rd. 0..25 DC Mills. . _.............. 6..25807-65c-5 AP1 CR Tube _ _._.. 7.65813-Air tested, full load .. _...............................•................................................................_ _.__ _.._.._.. 11.00Johnson Socket for above .. _..........................................1.10Handbooks! 1946, A.R.R.L., $1.50; "Radio" lOth Edition _ 2.50

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1946 ·--------------·NOVEMBER XTAL ------------------_ 25

'VOMAX"The famous McMurdo SilverMeter--combining in one thefunctions of a multi-meter, avolt - ohm-db-milliammeter -and an r.f. vacuum-tube volt-meter of laboratory instrumentcalibre.

Is NowMANUFACTURED AND DISTRIBUTED

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Enquiries

InvitedGeneral eRildionicB Enquiries

I! 465 Church Street

gard to service personnel getting phoneprivileges without taking code. Now I amon my way out of the Air Force and

. during my time in 'service was a wirelessmechanic and feel I could take care ofa phone rig, but at the same time I donot feel that getting an amateur licenseshould be made any easier, I still haveto get up my code before I can apply fora license and fully intend to get it inthe not too far distant future. It is truethat there are many fellows that wouldbe good conscientious hams if they gottheir license that way but at same timethere would be many that would takeadvantage of the privilege for their ownuse and not keep up to Amateur rules,whereas if one has to make an effortto get in as getting up the code etc. thenone has more respect for the rules.

If these service personnel are to getphone privileges why not restrict them toService Networks such as AF ARS. Theywould necessarily have to join such aNetwork to get phone privileges.

About the suggestions for phone on40 meters, I cannot say as I have noexperience in operating but at same timeI will be sorry to see one good CW bandbroken up. I would rather see 80 meterphones extended as CW on 80 could use40 just as easy in my opinion.

Glad to see you are planning to issuelogs and QSL cards, good idea. . Alsoglad to see that XTAL will be comingmore on time.

I believe Canadian Amateurs shouldhave their own league to speak for thembut I think it should be approachedslowly as I do not believe CanadianAmateurs are united enough yet to getaction on their decisions.

Thanks for a swell magazine.73, Norman Simon

ODE-from page 16nearest radio club to let it be known thatthe interest exists. . . . A directory ofradio clubs will be found elsewhere inthis issue. . . . Most Canadian hams arealso in a position to take advantage ofthe advanced code practice broadcast byW1AW on a regular schedule as follows:every night Monday through Friday, at10 p.m. EST. Speeds are 15, 20, 25, 30and 35 wpm. (approximately ten minutesat each speed) and transmissions areradiated simultaneously on 3555, 14150and 28060 kc.

REGtJllI T/flNS. In the course of our. recent survey, we

received numerous letters stressing theneed for revision of our regulations,. par-ticularly with respect to Class A phone.This view that it should be made tougherrather than easier to get on phone; fur-ther evidenced by the decision not toopen the new forty meter band (pro-posed) to unrestricted telephony, hasresulted in the Association going onrecord in favour of a Class A examina-tion similar to that conducted in theStates. We understand that a review ofamateur regulations is contemplated be-fore our licenses come up for renewalnext spring and some action may be takenat that time. . . . Stricter regulationsare bound to result eventually in a higherstandard of operation, and the nature ofour hobby makes it inevitable that weprogress in this direction. As the num-ber of amateurs increases, our skill andtechnical knowledge must keep pace,serving as a firm foundation for thecare, courtesy and common sense thatwas never more necessary than at thepresent time if we are to derive themaximum usefulness from our availablefrequencies. Think what 70,000 sparktransmitters would sound like on 80meters! .

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CALLING

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INTI-IE MARITIMESFOR'

Radio Parts, Toolsand Equipment asrequired by LicensedAmateurs and RadioServicemen, consult

MANNING·EQUIPMENT

LIMITED

Official ObserversChilliwack, B.C.

Editor XTAL:The enclosed resolution (copy) has

been sent to Vancouver Radio Clubs foraction:

Resolved:1. That each Amateur Radio Club ap-

point a Monitoring station in their area(one for each band) to check on off-fre-quency operation and/or regulations.

2. That the Monitoring stations send apostcard to the station involved statingall data, on first offense.

QSY to page 29

ERRATA

ON page 15, October XTAL,the diagram of Spence Soanes'

Beam Indicator, the 2-Leaf typemicroswitches show in the "open"position, 'the drawing should read"normally closed."

EDWARDS Radio and Appliancead on page 39, October, too,

says 8 cases of equipment comewith the 19 set-Should read "7cases." Sorry!

WESTERNHAM

HEADQUARTERSVE4-5-6-7-8

We win again carry a complete line ofHam gear as material becomes available

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26 NOVEMBER X"fAL ---------- 1946 1946 NOVEMBER XTAL -------- __ 27

The Technical Book Ass'n. ofCanada offers you:

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90800 EXCITERBased on an original Handbookdesign, this flexible unit is idealfor either low power transmitteruse or as an exciter for highpower PA stages.

JAMES MILLENMFG. CO., INC~

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r-- --~~anadian Representative

Astral Electric Co.• Scarboro Bluffs. OntoI1

28

PORT ABLE-from page 11The modulation transformer is a stand-ard 1:1 audio intended to match PPplates- to PP grids. The primary andsecondary windings were reversed in theevent that the manufacturer had woundthe plate winding with larger wire, there-by reducing the voltage drop to the finalamplifier. A double pole double throwswitch (Sl and S2) was arranged to pro-vide a simple phone-CW control. In theCW position the filament lead to theaudio section is opened and the key isinserted to short the modulation trans-former secondary and make and breakthe final high voltage. In the phone posi-tion the key is isolated, high voltage isapplied through the modulation trans-former to the final and filament voltageis supplied to the speech amplifier andmodulator. As a push-to-talk switch onthe microphone opens the microphonecircuit when released, no provision had tobe made to eliminate the mike current.

Two-volt tubes were used and it wasnecessary to provide some means oflimiting the filament voltage from thethree-volt source with the load varyingin the three operating positions-phone-CW and receive. A compromise waseffected in the transmitter where a re-sistor (R8) is adjusted with the rig onCW to give a filament voltage of 2.2volts. On fone the voltage was found todrop to 1.8 volts and this variation wasfound to be quite satisfactory in prac-tice. The receiver filament voltage wasadjusted to give just 2.0 volts by adjust-ing R9.

Transmit-Receive switching is accomp-lished by the low capacity switch (S).This is arranged to change over thedoublet antenna connections and the fila-ment supplies ..

All components' were chosen wherepossible, for their small size. Coils werewound on 112" and %," wooden dowelswith a single mounting screw fasteningthem to the panel. The variable con-densers were of the midget Hammarlundvariety designed to mount inside a stand-ard 11/2"- inch coil form. The transmittercondensers have slotted shafts while therest are fitted with knobs. The audio gaincontrol is a miniature item, about % ofan inch across, with set-screw control.As no room could be found for a meteron the front panel it was decided that asmall analyzer would serve this purposeand also be available in case of trouble.Meter connections were therefore pro-vided on the front panel.

When completed the rig was given afunctional test in the city. It was foundthat the receiver coils and the trans-mitter antenna link coil required prun-ing. This was done and good band spreadcoverage and satisfactory antenna load-

NOVEMBER XTAL 1946

ing' resulted with the coil specificationsgiven. When using a pair of sensitivephones the receiver volume was found tobe more than adequate. The transmitterwas carefully checked for any sign offrequency modulation, spurious radiationor any other undesirable effect and nonewere found. Tuning up was accomplishedin the usual way by merely "dipping"the plate current. Owing to the lowpower and voltages used it was foundthat some insensitive crystals refused tooscillate. The use of reasonably activecrystals is therefore a necessity.

On arriving at the holiday QTH aserious lack of trees was noted, It wasfound necessary to take to the tall tim-ber, chop down a tree, drag it back tothe scene of activity and erect it like atelephone pole. The antenna was erected

.about twenty feet in the air after a lot ofhard work.

The first QSO was with Toronto twohours and forty-five minutes after arriv-ing at the cottage. A 579x report wasreceived and skeds were arranged. Dur-ing the course of the following twoweeks sunspot conditions made the bandvery poor. In spite of this, skeds werekept every night with reports rangingfrom 459x to 599x. QSOs with W8s andW2s were commonplace while reports of589x were not uncommon. When condi-tions were good phone contacts with To-ronto proved reliable except when QRMwas heavy. The best DX was a VEl inHalifax and a W9 in Iowa,

-------0-------O. O.-from page 26

3. If the station is heard again-a se-cond notice is mailed to the stationowner.

4. If the station still continues tobreak regulations the Radio Inspectorwill be notified by the Amateur OfficialMonitoring station.GAROA can assist us to keep our bands

in Amateur condition and cleaner oper-in Amateur condition and to, promotecleaner operating habits on the part ofall stations. \

ATTENTION

'S.;

1946 NOVEMBER XTAL ----------- 29

• When you come toBuffalo, be sure todrop in at DYMACINC.

• You will visit, thelargest radio partsand equipmentdis-tributor in the West-ern New York area.

• Here you will findall kinds of Hamgear to gladden ex-perieneed H a- m I shearts. . A cheerfulwelcome awaits you.

-0-

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THE JAMES MILLEN MFG.CO., INC.

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WE WISH TO

ANNIJIJNCE • • •

EDITORIAL-from page 6

capable of providing entertainment atalmost any hour of the day or night. Ifyou're a DX man who lives on twenty,you may not be aware of the fact thatyou can work out on forty as well, andif you're the patient fisherman type, youmight even enjoy lying in wait for a Gor a PA on eighty CW. If the 75 meterphone band is dead, chances are that 20isn't. If you're tired talking to W2's.and you live in a big city, try ten afterdark and converse with some of yourcomparative neighbours and swap an-tenna dope. We particularly pity thosewho have never tried a given band be-cause their transmitter or receiver doesn'tinclude that range. This may involvesome work, and you might even have toerect a more efficient antenna, but on theother hand you don't need a kilowatt andthe biggest beam in town to get a kickout of ham radio. If there is a band youhave scorned up to now-try it for aweek. You might like it!

---0--

41 METER-from page 13

casting services, it naturally does notwish to interfere with the activities ofamateurs, and will always seek to avoidsuch interference by choosing frequenciesin other broadcasting bands when theseare suitable and available.

As solar activity is now increasing,the BHC expects to be able to maintainits services to the Americas during thenext few years without recourse to the41-mehe band, thus reducing to a mini-mum interference with amateur activity.

-----0'-----

HAM-liDS

to both "Hams" and the Trade our appoint-ment as Sales Representative of CanadianResearch Institute. manufacturers of theDirectional Aerial Indicator, described inthe October issue of XTAL. Canadian Re-search Institute also manufacture a line ofhigh quality test instruments.

The Directional Aerial Indicator comes intwo models. The Deluxe, which is housedin a walnut case and is equipped with aspecial etched map and the Standard model.in a metal case with a translucent glassdial marked off in all points of the com-pass. Both models equipped with heavyduty Selsyn Motors. •Price: Deluxe model $190.00

Standard model..... 126.00

Enquiries invited from anywhere in Canada

Electronic Specialties1650 St. Clair Ave .• Toronto, Can.

National-from page 15Lucky guy. AK returned to post at D.O.T. hereand AJ left for the outside for needed rest. BBhad hard luck getting out from river boat due togenerator noise. BF. another newcomer to ham-dom. AG· sticks to 75 fone. FjSgt. Cliff Staples.an ex-VE3. awaits his new VE8 ca.ll, Yours trulystill qrt while building ham shack. From theTesfin gang this month comes word that AL on75 fone and trying to get on 40 and 20. AZ isawaiting receiver. AP hopes to be on soon. AIjust back from vacation will be on all bands run-ning 125 watts. We hope that next month someof the boys over in N.W.T. will send in some infoon their doings. BC is now in Bear Creek. Daw-son. Y.T. CUL.

SELL-Carter Genemotor, hardly used. In-put 6V. Output 250V at 50 mo. $12.00or offers. Also Deluxe Model Moc SpeedKey, in good condition, with case, for$8.00.-3BEF, A. W. Smith, Dungannon,Onto

SELL-Pair GE 814's. new condition,$10.00; 1140R transformer, $3.00. ShipC.O.D.-H. A. Walker, Parkside. Sask.

SWAP-Brand new 813 or pair of 211 's fora 500 volt 200 ma. plate transformer.-87Annette St., Toronto, LY. 9148.

SELL-10 tube receiver, hardly used.covers from 80 to 10 meters, 1 stage ofRF and 2 of IF. All new parts usedthroughout. $80.00.-107 Mackay Ave.,Toronto, KE. 3368.

WANTED'----200 mo, filter choke and re-ceiver covering up to 14 mc band. Urgent.-Steve Chisholm, 5 Clydebourne Ave.,Woodroffe, (Ottawa), Onto

Help the Handicapped to Help Themselves.21 fine Christmas cards, assorted, with orwithout scripture text, $1.00 postpaid.VE3AWI (handicapped) Box 474, Goderich,Onto

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30 NOVEMBER XTAL 1946

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Accurately service any modelof communication receiver ordevice. SX28A, HQ129x,RME,a specioltv. Guaranteed work-manship. Minimum servicecharge, $10.00.

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Box 242

1946 NOVEMBER XTAL 31

-------------------------------

*

hallicrafters SX~42First in a great line of

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*

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Hallicrafters model SX-42 sets a new high in performance and versa-tility. Delicately balanced and as precisely aligned os a many-jeweledwatch, SX-42 is the finest receiver of its kind ever developed. Theresult of more than a year of intensive research on the port ofHallicrafters expert technicians, SX-42 has been checked and re-checked in a thousand and one testing operations. SX-42 coversall frequencies from 540 KC to 1 10 MC, combining in one superblyengineered unit, a top-flight standard, VHF communications,shortwave and F M broadcast receiver together with a high fidelityphonograph amplifer. The tremendous frequency range of theSX-42 gives greater continuous coverage than has ever beforebeen available. This is made possible qy the development ofa new "split-storor" tuning system and the use of dual intermediatefrequency transformers. The contrals of SX-42 are arranged formaximum convenience and simplicity of operation. Hallicrafters newsystem of col or coding makes it possible for the entire family taenjoy this fine receiver.

See SX-42 - Hear SX-42. It's The Radio Man's Radio, designedto meet the most exacting demands of the discerning radio amateur.

THE NEW

5-38'5 ,

4 Bands- 540 kc.to 32 Mc.I

The Model S·38 meets the demand for a truly competent communicationsreceiver in the low price field. Styled in the post-waf Hallicrafters patternand incorporating many of the features found in rr/ore expensive models,the S-38 offers performance and appearance far above anything hereto-fore available in its class. Four tuning bands, CW pitch control adjust-able from the front panel, automatic noise limider, self-contained PM

I .

dynamic speaker and "Airodized" steel grille, all mark the S-38 as thenew leader among inexpensive communications receivers.

CONTROLS: SPEAKER/PHONES, AM/CW, NOISItL1MlTER. TUNING, CW PITCH, IlAND SIiLIIC.TOR, VOLUME, llAND SPREAD, J\EClilVUISTANDllY.EXTERNAL CONNECTIONS: Amennn tCl'lninnl1l 'ordoublet or single wire antenna. Ground tcnulnul.Tip jacks for headphones. .

PHYSICAL CHARACTERISTICS: Housed ill :I sl\Ird),steel cabinet. Speaker grille in top is of (drotll1mlsteel. Chassis cadmium plated.

SIX TUBES: 1-12SA7 convener; 1-12SK7 IF !WIIlII.

fier ; 1-12SQ7 second detector. AVC, fin.t mullu tllll.pfifier ; 1-12SQ7 beat frequency oscillator. uUIUllwdt'

noise limiter ; 1-35L6GT second audio IIIIIIIJlfi,-" Ii-35Z5GT rectifier.

OPERATING DATA, The .Model S·3R is dc,i~I",,1 10operate on 105-125 volts AC or DC. A spechd t'I(lIlr.nal resistance line cord can be supplied (or Olltm~dulIon 210 to 250 volts AC or DC. Power COII;1I1II11I11I11

on 117 volts is 29 watts.

FEATURES1. Overall frequency range-:HO kitocvcte s to 32 meg a-cycles in <I bands.

nand I-Ho to 16~Okc.Ihnd 2-1.6~ to ~ Me.J\,tfld )-~ 10 14.~ Mc.H.tnd .1-13.~ to H Me.

"tIC~lu.tte overl ap is provided11' Il.e CI\.I~ of all bands.

J M.dl! Itllting dial accuratelyI d,h"tIC\1.

3. Separate electrical bandspread dial. j

4. Beat frequency oscillator. Jpitch adjustable: from frontpanel.

5. AM/C\\1switch.Alsoturnson automatic volume controlin AlI.'l position.

6. Standbv/receivc switch.

7. Automatic noise Iimiter.

8. Maximum audio output-1.6 watts.9. Internal PM dynamicspeaker mounted in top.10. Controls arranged formaximum ease of operation.11. 10~·I2~ volt AC/DC cp-eration. Resistor line cord for210·2~Ovolt operation avail-able.12. Speaker/phones switch.