Thomas Edison's TDC - Built One and It Works

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    ITC Bridge > Instrumental Transcommunication (ITC) > The Creative Corner - Miscellaneous Electronic ITC Experimenting >Thomas Edison's TDC - built one and it works !

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    Posted: Aug 26th, 2012 05:56 PM PM Quote Reply 1st Post

    Slider2732Member

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    This is highly strange. I've previously built crystal radios and now have a couple of years of Tesla tower buildsetc to study resonance, but this device escapes me in how it works.

    Yet, work it apparently does !

    A couple of guests were on the radio show Coast to Coast AM the other night, talking about the ScoleExperiment and detailing a device that Edison created. Our own Vicki Talbott was on a related video found onYouTube. I'd never seen the documentary, nor the circuit, though had of course heard of Edison's interest in theparanormal.The circuit itself, was communicated via an unexposed reel of film, sat in a sealed wooden box and with scientificpeople present !Here are some links:Coast to Coast AM program now uploaded kindly by a chap to YouTube - http://www.youtube.com/watch?v=hl83ovR5iM0Skip to 1:16:00 for the interview, there's another guy on before then.Documentary about the Scole Experiment - http://www.youtube.com/watch?v=pQvQ_WTtdHkThe circuit diagram and some background info -http://robinsphysicalphenomena.webs.com/thetdcdevice.htm

    So I built one !2x 1500 turn coils. The coils are made from unwound 56uH ferrite inductors, wound again with wire from a 12Vrelay. Spacing between appears to be important, or at least should be.No germanium so a piece of fools gold was used.Piece of plate copper under the rock.Needle as point contact, pressure from copper rod it's glued to.Output is to Audacity on the PC, via the mic port.

    After some moving around of the needle, I received the words 'Hey Mark' from an American soundingwoman!!!!!!All is very hissy and I presumed that would be all that would come through.The tip for this is to 'Normalize' a short recording and that brings the levels up to audible, but does increase thehiss. No filtering etc is used.

    Here's a pic of the built device and the audio. Best to play it 3 or 4 times, because all your ears will hear thefirst time is hiss. After that, the voice is a Class B, within the hiss, if you see what I mean.

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    omas Edison's TDC - built one and it works ! - The Creative Corner - Miscellaneous Electronic ITC Experimenting - Instrumental Transcommunication (ITC) ...

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    Attachment: TDC Hey Mark 24Aug2012.wav (Downloaded 18 times)

    Last edited on Aug 26th, 2012 06:03 PM bySlider2732

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    Posted: Aug 29th, 2012 09:19 AM PM Quote Reply 2nd Post

    PsychopomposMember

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    Hi Slider.

    Compliments for your device.For years,I have always desired to build one.I have the germanium chips, but theproblems are the coils.The original device uses 5 Kohm coils,both wound in opposite directions.Difficult to windand difficult to find!.If you are capable to make it for me with the original specs, in exchange,I will be happyto send you the original chips.

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    Posted: Aug 29th, 2012 05:53 PM PM Quote Reply 3rd Post

    ArizonaEvpSuper Moderator

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    Hi guys,

    Nice effort Slider.

    If you want to try other minerals with the cat whisker, you could use things like boronite - zincite - hematite -galena - molybdenite and while not a natural mineral, you could also experiment with a piece of pure silicon.

    And.....for that out of this world experience....(pun) you could even use a small piece of meteorite.

    One thing to keep in mind about this circuit as well as the raudive circuit and untapped crystal radios ingeneral is that their designs are intended to be used with high impedance earphones / headphones.

    If you want a cleaner / clearer sound you might want to think about using an impedance matching transformerlike the Bogen T725.

    Good Luck,

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    omas Edison's TDC - built one and it works ! - The Creative Corner - Miscellaneous Electronic ITC Experimenting - Instrumental Transcommunication (ITC) ...

    p://www.itcbridge.com/forum/view_topic.php?id=1842&forum_id=32[05.10.2012 22:17:42]

    Ron

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    Posted: Aug 29th, 2012 06:36 PM PM Quote Reply 4th Post

    PsychopomposMember

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    Here the original device....

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    Posted: Aug 30th, 2012 08:50 PM PM Quote Reply 5th Post

    Slider2732Member

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    Thanks Arizona and Psychopompos

    Meteorite ?!

    Yes, 5K coils indeed. I mean, how on earth (or elsewhere) could a 5K coil be wound to the dimensions shownin the original device ?Mine worked out at 167 Ohm's each, matched, using finer than hair 40 AWG from a relay.One way, feasibly, would be to use a 5K pot and wind it up to nearly full, then use the coil to make up to the5K.However, I do think the highest ohm reading to be important..after all, that's the spec.

    All of this has me further intrigued, because of some petrovoltaic experiments recently.In this 2 minute video, I show that a piece of rock actually runs in an LED circuit better than a straight wireconnection: http://www.youtube.com/watch?v=LQTRQUuuutMSimple circuit diagram is shown within the video.

    @Psychopompos - I'll gladly help. Although of zero income, I have a lot of spares etc around here and willfurther the development. There's no way on the planet I could afford some germanium chips at the moment,so would be doing us both a favour and, hopefully furthering this fascinating circuit for others.

    @ArizonaEVP - the best earpiece i've used with crystal radio experiments is from an old telephone. It works

    well and is something to try on the original build, or a subsequent build. Where does one find the pink singleearbud types these days ? I used to see them in the ears of the hard of hearing in the 1980's, but haven'tseen any recently (in or out of old folks ears).

    Last edited on Aug 30th, 2012 08:54 PM bySlider2732

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    omas Edison's TDC - built one and it works ! - The Creative Corner - Miscellaneous Electronic ITC Experimenting - Instrumental Transcommunication (ITC) ...

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    Posted: Aug 30th, 2012 09:58 PM PM Quote Reply 6th Post

    joecioppiModerator

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    ear pieces are available at:http://scitoys.com/scitoys/scitoys/radio/radio.html

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    Posted: Aug 31st, 2012 04:51 AM PM Quote Reply 7th Post

    Slider2732Member

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    Thanks Joe..kinda spendy at $6.84, but at least they do have them

    I'm growing piezo crystals at the moment, in the hopes of making an earphone in the future (Baking

    Soda/Cream of Tartar method). But, more realistically, am looking at piezo flat buzzers from greetings cardsetc. Will build an enclosure and see how it goes.Just tried out a crystal radio build and the original telephone handset speaker works fine, so am going to usethat for the meantime.

    Does anyone know what the original core for the coils was made of ?I'm going to be using ferrite, larger than the original coils above for more turns...but just wondered if it wasindeed ferrite on the original.

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    Posted: Aug 31st, 2012 09:32 AM PM Quote Reply 8th Post

    PsychopomposMember

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    Here the piece of germanium.I will cut it to correct shape.

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  • 7/28/2019 Thomas Edison's TDC - Built One and It Works

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    omas Edison's TDC - built one and it works ! - The Creative Corner - Miscellaneous Electronic ITC Experimenting - Instrumental Transcommunication (ITC) ...

    p://www.itcbridge.com/forum/view_topic.php?id=1842&forum_id=32[05.10.2012 22:17:42]

    Posted: Aug 31st, 2012 07:01 PM PM Quote Reply 9th Post

    Slider2732Member

    Joined: Mar 3rd, 2008

    Location: Muskogee,

    OklahomaUSA

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    GreatBy the way, Welcome to the group !

    Some decent progress has been made toward understanding the high resistance coils and the 5000 ohm wordingon the circuit diagramNow, I believe they meant 5000 turns or 500 ohms.I wound a coil last night (4 hours worth) of 5000 turns and it came out as 449 ohms, which is approximate to500 ohms.

    Here's a couple of pics, first of the ferrite chokes as they came off the back of part of a microwave oven and thesecond is the rewound finished coil.Looking at the picture above of the original, i've tried to make it correct in size and look. The coil has thickconnection ends, as per the picture and has black electrical tape over the windings.

    http://www.itcbridge.com/forum/pm.php?send_to=Slider2732http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12729&quote=1http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/view_post.php?post_id=12729http://www.itcbridge.com/forum/view_post.php?post_id=12729http://www.itcbridge.com/forum/view_post.php?post_id=12729http://www.itcbridge.com/forum/view_user.php?id=2787http://www.itcbridge.com/forum/view_user.php?city=Muskogee&region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?country=USAhttp://www.itcbridge.com/forum/view_user.php?country=USAhttp://www.itcbridge.com/forum/view_user.php?region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?city=Muskogee&region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?id=2787http://www.itcbridge.com/forum/view_post.php?post_id=12729http://www.itcbridge.com/forum/view_post.php?post_id=12729http://www.itcbridge.com/forum/view_post.php?post_id=12729http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12729&quote=1http://www.itcbridge.com/forum/pm.php?send_to=Slider2732
  • 7/28/2019 Thomas Edison's TDC - Built One and It Works

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    omas Edison's TDC - built one and it works ! - The Creative Corner - Miscellaneous Electronic ITC Experimenting - Instrumental Transcommunication (ITC) ...

    p://www.itcbridge.com/forum/view_topic.php?id=1842&forum_id=32[05.10.2012 22:17:42]

    (compare to original in Psychopompos's post above)

    Time to find some relays and make the other coil !

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    Posted: Sep 1st, 2012 12:12 AM PM Quote Reply 10th Post

    Slider2732Member

    Joined: Mar 3rd, 2008

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    OklahomaUSA

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    The second coil was prepared and made ready for winding:

    http://www.itcbridge.com/forum/pm.php?send_to=Slider2732http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12729&quote=1http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/pm.php?send_to=Slider2732http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12731&quote=1http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/view_post.php?post_id=12731http://www.itcbridge.com/forum/view_post.php?post_id=12731http://www.itcbridge.com/forum/view_post.php?post_id=12731http://www.itcbridge.com/forum/view_user.php?id=2787http://www.itcbridge.com/forum/view_user.php?city=Muskogee&region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?country=USAhttp://www.itcbridge.com/forum/view_user.php?country=USAhttp://www.itcbridge.com/forum/view_user.php?region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?city=Muskogee&region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?id=2787http://www.itcbridge.com/forum/view_post.php?post_id=12731http://www.itcbridge.com/forum/view_post.php?post_id=12731http://www.itcbridge.com/forum/view_post.php?post_id=12731http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12731&quote=1http://www.itcbridge.com/forum/pm.php?send_to=Slider2732http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12729&quote=1http://www.itcbridge.com/forum/pm.php?send_to=Slider2732
  • 7/28/2019 Thomas Edison's TDC - Built One and It Works

    7/10

    omas Edison's TDC - built one and it works ! - The Creative Corner - Miscellaneous Electronic ITC Experimenting - Instrumental Transcommunication (ITC) ...

    p://www.itcbridge.com/forum/view_topic.php?id=1842&forum_id=32[05.10.2012 22:17:42]

    After matching to the 449 ohms of the other one, both were attached to the test circuit:

    I then set about tuning the coils. More a case of 'hmm maybe' for any perceived changes and adjusting the gapbetween them, plus moving the fools gold piece.Recordings have been of around 8 seconds in Audacity and then just 'Normalized' to bring the level up.

    Ya know those all too common EVP whisper voices ? quite clear and yet someone is whispering. Well the firstpossible EVP, after about 20 attempts at tuning is attached....someone appearing to say 'Welcome'...quite thefitting word.

  • 7/28/2019 Thomas Edison's TDC - Built One and It Works

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    omas Edison's TDC - built one and it works ! - The Creative Corner - Miscellaneous Electronic ITC Experimenting - Instrumental Transcommunication (ITC) ...

    p://www.itcbridge.com/forum/view_topic.php?id=1842&forum_id=32[05.10.2012 22:17:42]

    THEN, well in the blurb for the original TDC experiments, there is talk of the voices coming through soundingrobotic. That's what I appear to have captured next !!!The voice seems to say 'Devil play' and is quite clear considering the hiss.I'll post again and attach the 'Devil play' recording...it's worth listening to, in my opinion and I would welcomeyour thoughts.

    Attachment: TDC new coils 3 'welcome'.mp3 (Downloaded 8 times)

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    Posted: Sep 1st, 2012 12:13 AM PM Quote Reply 11th Post

    Slider2732Member

    Joined: Mar 3rd, 2008

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    OklahomaUSA

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    Devil play ?

    Attachment: TDC new coils 5 'Devil Play' - ROBOTIC.mp3 (Downloaded 11 times)

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    Posted: Sep 1st, 2012 01:34 PM PM Quote Reply 12th Post

    ArizonaEvpSuper Moderator

    Joined: Jun 26th, 2009

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    Indian Country,

    ArizonaUSA

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    Slider2732wrote:

    "Thanks Joe..kinda spendy at $6.84, but at least they do have them

    I'm growing piezo crystals at the moment, in the hopes of making an earphone in the future (BakingSoda/Cream of Tartar method). But, more realistically, am looking at piezo flat buzzers from greetingscards etc. Will build an enclosure and see how it goes.Just tried out a crystal radio build and the original telephone handset speaker works fine, so am going touse that for the meantime.

    Does anyone know what the original core for the coils was made of ?I'm going to be using ferrite, larger than the original coils above for more turns...but just wondered if itwas indeed ferrite on the original."

    Hi Slider,

    The earpiece from an old telephone will work just fine.

    Yes....you can use meteorite for a detector. Pyrite is metallic and so is galena. Remember those "foxhole"crystal sets. They used a razor blade and pencil lead for their cat whisker.

    I looked around the net and didn't find any info on they made their coils. I suppose one could always contactthem through their website.

    Regards,Ron

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    Posted: Sep 2nd, 2012 10:30 PM PM Quote Reply 13th Post

    Slider2732Member

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    Thanks Ron,Is there any use in taking a magnet up to a river or stream ? Am just wondering what kind of rocks might bewithin Oklahoma to try out.

    Psychopompos wrote in a PM that the coils seem to be aircore and may relate to scalar reception.I'm going to wind some aircore versions and compare.

    At the moment, it seems from the tests that the higher the coil resistance, the louder and clearer the receivedpossible EVP's. Using ferrite may act as a quench, decreasing the Q.Or in other words, giving with one hand and taking back with the other.

    http://www.itcbridge.com/forum/attachment.php?id=4101http://www.itcbridge.com/forum/pm.php?send_to=Slider2732http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12731&quote=1http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/pm.php?send_to=Slider2732http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12732&quote=1http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/view_post.php?post_id=12732http://www.itcbridge.com/forum/view_post.php?post_id=12732http://www.itcbridge.com/forum/view_post.php?post_id=12732http://www.itcbridge.com/forum/view_user.php?id=2787http://www.itcbridge.com/forum/view_user.php?city=Muskogee&region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?country=USAhttp://www.itcbridge.com/forum/attachment.php?id=4102http://www.itcbridge.com/forum/pm.php?send_to=Slider2732http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12732&quote=1http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/pm.php?send_to=ArizonaEvphttp://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12733&quote=1http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/view_post.php?post_id=12733http://www.itcbridge.com/forum/view_post.php?post_id=12733http://www.itcbridge.com/forum/view_post.php?post_id=12733http://www.itcbridge.com/forum/view_user.php?id=14964http://www.itcbridge.com/forum/view_user.php?city=Heart_Of_Arizona_Indian_Country&region=Arizona&country=USAhttp://www.itcbridge.com/forum/view_user.php?city=Heart_Of_Arizona_Indian_Country&region=Arizona&country=USAhttp://www.itcbridge.com/forum/view_user.php?region=Arizona&country=USAhttp://www.itcbridge.com/forum/view_user.php?region=Arizona&country=USAhttp://www.itcbridge.com/forum/view_user.php?country=USAhttp://www.itcbridge.com/forum/view_user.php?id=2787http://www.itcbridge.com/forum/view_user.php?id=2787http://www.itcbridge.com/forum/pm.php?send_to=ArizonaEvphttp://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12733&quote=1http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/pm.php?send_to=Slider2732http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12743&quote=1http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/view_post.php?post_id=12743http://www.itcbridge.com/forum/view_post.php?post_id=12743http://www.itcbridge.com/forum/view_post.php?post_id=12743http://www.itcbridge.com/forum/view_user.php?id=2787http://www.itcbridge.com/forum/view_user.php?city=Muskogee&region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?country=USAhttp://www.itcbridge.com/forum/view_user.php?country=USAhttp://www.itcbridge.com/forum/view_user.php?region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?city=Muskogee&region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?id=2787http://www.itcbridge.com/forum/view_post.php?post_id=12743http://www.itcbridge.com/forum/view_post.php?post_id=12743http://www.itcbridge.com/forum/view_post.php?post_id=12743http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12743&quote=1http://www.itcbridge.com/forum/pm.php?send_to=Slider2732http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12733&quote=1http://www.itcbridge.com/forum/pm.php?send_to=ArizonaEvphttp://www.itcbridge.com/forum/view_user.php?id=2787http://www.itcbridge.com/forum/view_user.php?country=USAhttp://www.itcbridge.com/forum/view_user.php?region=Arizona&country=USAhttp://www.itcbridge.com/forum/view_user.php?city=Heart_Of_Arizona_Indian_Country&region=Arizona&country=USAhttp://www.itcbridge.com/forum/view_user.php?city=Heart_Of_Arizona_Indian_Country&region=Arizona&country=USAhttp://www.itcbridge.com/forum/view_user.php?id=14964http://www.itcbridge.com/forum/view_post.php?post_id=12733http://www.itcbridge.com/forum/view_post.php?post_id=12733http://www.itcbridge.com/forum/view_post.php?post_id=12733http://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12733&quote=1http://www.itcbridge.com/forum/pm.php?send_to=ArizonaEvphttp://www.itcbridge.com/forum/reply.php?topic_id=1842http://www.itcbridge.com/forum/reply.php?topic_id=1842&post_id=12732&quote=1http://www.itcbridge.com/forum/pm.php?send_to=Slider2732http://www.itcbridge.com/forum/attachment.php?id=4102http://www.itcbridge.com/forum/view_user.php?country=USAhttp://www.itcbridge.com/forum/view_user.php?region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?city=Muskogee&region=Oklahoma&country=USAhttp://www.itcbridge.com/forum/view_user.php?id=2787http://www.itcbridge.com/for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  • 7/28/2019 Thomas Edison's TDC - Built One and It Works

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    omas Edison's TDC - built one and it works ! - The Creative Corner - Miscellaneous Electronic ITC Experimenting - Instrumental Transcommunication (ITC) ...

    p://www.itcbridge.com/forum/view_topic.php?id=1842&forum_id=32[05.10.2012 22:17:42]

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    Posted: Sep 3rd, 2012 12:19 AM PM Quote Reply 14th Post

    ArizonaEvpSuper Moderator

    Joined: Jun 26th, 2009

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    Indian Country,

    ArizonaUSA

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    Slider2732wrote:

    "Thanks Ron,Is there any use in taking a magnet up to a river or stream ? Am just wondering what kind of rocks mightbe within Oklahoma to try out.

    Psychopompos wrote in a PM that the coils seem to be aircore and may relate to scalar reception.I'm going to wind some aircore versions and compare.

    At the moment, it seems from the tests that the higher the coil resistance, the louder and clearer thereceived possible EVP's. Using ferrite may act as a quench, decreasing the Q.Or in other words, giving with one hand and taking back with the other."

    If you take a magnet you might find a piece of iron or iron filings.

    Depending on where in OK you live, There is the recent ghost town at Picher in Ottowa County. It was a bigmining operation for zinc and lead ore....both of which would work as a crystal detector.

    You could also do a search for Ok rocks and minerals and find a rockhounding mineral club nearby your

    location. They would be able to point you in the right direction.

    Here is a link to the Picher ghost town:

    http://www.ghosttowns.com/states/ok/picher.html

    And the link for listings for Oklahoma:

    http://www.ghosttowns.com/states/ok/ok.html

    This site also has listings of ghost towns throughout the US and Canada:

    http://www.ghosttowns.com/ghosttownsusa.html

    Happy Hunting,Ron

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    Posted: Sep 3rd, 2012 01:53 AM PM Quote Reply 15th Post

    Slider2732Member

    Joined: Mar 3rd, 2008

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    OklahomaUSA

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    Thanks again Ron.I meant to type multimeter for continuity, but the fingers typed magnet while I was thinking of what else totake along !

    Yeah, we moved here (near Tulsa) in July 2008. While driving through Picher we saw what was left of the gasstation and other places in the town. My wife said of the tornado and the damage was unfortunately clearlyevident.

    I didn't know about the varied other metals/ores for detection...fascinating

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    Posted: Sep 3rd, 2012 11:12 AM PM Quote Reply 16th Post

    PsychopomposMember

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    Slider,Dont forget to experiment with carbides, as mentioned by the Scole group....

    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