[Boatanchors] T-17 microphone

[Harold Hairston]

Wayne:

In the mid to late '50's everyone I knew of, including myself, replaced the 
original carbon button in the T-17 with the current telephone element of the 
time. Of course, all equipment was AM and many  of our radios were surplus.

I used mine mobile with modified SCR-274N  equipment. I still have it and am 
considering trying it with  my T-368. Probably need
 a new element.

Harold


----- Original Message ----- need ...
From: <hwhall at compuserve.com>
To: <milsurplus at mailman.qth.net>; <boatanchors at mailman.qth.net>
Sent: Wednesday, August 27, 2014 10:12 PM
Subject: [Boatanchors] T-17 microphone


> Hi, everyone.
>
> We have a T-17 mike at the museum that they want to use with the Link 
> Trainer. I've determined that it won't work (no surprise there). I've 
> disassembled it down to the unit pictured in these two links.
>
> https://picasaweb.google.com/115890116694220051659/HamRadio#6052387851025477794
>
> https://picasaweb.google.com/115890116694220051659/HamRadio#6052387847114802610
>
> (Hope those links work or maybe I need to find another place to put up the 
> pictures.)
>
> It unit acts like it's an open circuit, my VOM shows no needle movement 
> even on an Rx10K scale. When wired in series with a small battery voltage, 
> up to 9v, and a 10K pot, no current is seen to flow. Banging it on the 
> workbench doesn't improve it any at all.
>
> Googling T-17 discussions, I saw that someone had once transplanted carbon 
> granules from a telephone element into a surplus mike (not a T-17, though) 
> which leads me to wonder if that might resurrect this one. I'd like to 
> know if anyone else had stripped a T-17 down past where I'm at and what 
> I'd need to do next to get at the carbon without doing something I won't 
> be able to undo. I don't have another one to experiment on and throw away 
> if I make a serious error.
>
> Thanks for any and all input!
>
> Wayne
> WB4OGM
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