[ARC5] T-17 Metal 1942 or Plastic 1944 for 1949 GRC-9?

[Richard Knoppow]

     I found mine. Funny how memory distorts things. Mine is plastic. 
Its marked Signal Corps T-17-D CAAG 1062-PH-44  Made by Universal 
Microphone  The switch is also marked SW-17  I don't know if that number 
refers to the push to talk switch or is something else like perhaps the 
Universal Microphone model number. Mine has an element which is part of 
the front. The front looks like it unscrews but is actaully held on by 
three screws through the front grill. In mine the screws are covered 
with wax.
  Universal was in Inglewood CA, near here and seems to have disappeared 
after WW-2. There was another company in Inglewood called Carrier 
Microphone. I read long ago that it was started by the superintendent of 
Universal Microphone. Carrier advertised through the mid 1930s but also 
disappeared.
     The T-17 seems to have been made by several companies, Shure and 
Universal among them.
     A look at advertising in 1930s magazines shows that a lot of small 
companies made microphones of some sort including Collins Radio. Most of 
them have vanished.  The basic patents for most microphones were held by 
Western Electric, General Electric and RCA.

On 9/13/2016 1:49 PM, jeepp wrote:
> Good T-17 mics are like a good meal.  They're wherever you find them.
>  The replacement with telephone op boom mic elements is arguably the
> best choice, when necessary.  As others, I have probably half dozen mics
> of various models.  Two of them work like gangbusters, the rest
> certainly do not.  The first thing to do is to temove the bypass cap.
>  That may help enormously.  I have had poor experience with the RS-38
> and similar mics.  Even the ones removed from recent G/A aircraft. The
> M-15/UR T-17 replacement works well.  But as I said in my ER article,
> T-17s retro with a big telco element stuck up front looks likes a pig's
> nose.
>
> Jeep K3HVG
>
>
>
> Sent from my Verizon 4G LTE smartphone
>
>
> -------- Original message --------
> From: Dennis DuValll via ARC5 <arc5 at mailman.qth.net>
> Date: 9/13/16 3:02 PM (GMT-05:00)
> To: Don Merz <n3rht at yahoo.com>
> Cc: ARC-5 List <arc5 at mailman.qth.net>, MilSurplus QSLNet
> <milsurplus at mailman.qth.net>
> Subject: Re: [ARC5] T-17 Metal 1942 or Plastic 1944 for 1949 GRC-9?
>
> Keep both….  Always good to have a spare.
>
> Dennis D.  W7QHO
> Glendale, CA
>
> ****************
>
>
>
>
>
>> On Sep 13, 2016, at 9:26 AM, Don Merz via ARC5 <arc5 at mailman.qth.net
>> <mailto:arc5 at mailman.qth.net>> wrote:
>>
>> I want to add a T-17 to my GRC-9 radio. I have 2 good ones--as noted
>> above a metal 1942-contract and a plastic 1944 contract. Is there any
>> reason to care which one I keep?
>>
>> 73 de N3RH Don Merz
>>
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL