Greetings from down under. I’m sorry that I can’t be there ...
Transcript of Greetings from down under. I’m sorry that I can’t be there ...
Greetings from down under.I’m sorry that I can’t be there this
year to enjoy the conference.Pay attention up the back,
Robert is calling the shots here!
Do you want to make a 1920’s Coil but you don’t have any vintage former
material?
No Problem.BY
Dan BedfordHRSA, HWSSEQ, AWA
© 2016
Why use plastic when a Post Office mailing tube
will suffice? A good question.
The simple answer is Q.
Most plastics, particularly polystyrene, will
introduce significantly less losses than cardboard.
This may not be so important in an amplified set *
but will be an advantage if building, for example,
a crystal set.
*Expanding on the statement, “This may not be so
important in an amplified set.”
If the set uses regeneration, the Q will only be high
at the frequency to which the set is tuned and on
the verge of oscillation.
Elsewhere, the Q may be very low and a powerful
station on a nearby frequency may still break
through on the tuned frequency.
Back to the job at hand!
First we need to cut a length of pipe to size and mark out the position of any mounting and
winding holes.This can be a painful exercise with a round tube that always
wants to roll away.
Mix small quantities of red, yellow and
green until you get a suitable “rust” colour.
Mix straight from the tube without thinning.
Dab away until the former is covered.Don’t be too fussy as the Fibre tube had
a very irregular appearance.Repeat the exercise until you get a
pleasing effect.Remember that the Impressionists
created beautiful renditions of reality with touches of broken colour!
You can mix your own shellac with flakes and
methylated spirits, or,
you can use the fair dinkum product from
the good ole’ U.S. of A.Now there’s mixed colloquialisms for you!