[ARC5] Fwd: BC-611 Production numbers...now throat mics

[MARK DORNEY]

T-17 mics have a metal loop on top to enable it to be hung on a hook. Many other WW2 military handsets have a clip on the back so they can be hung on LBE.  Or stuffed behind the straps. And even a throat mic uses a push to talk device, so a radio operators hands weren’t exactly free when transmitting. 

Mark D. 

“In matters of style, float with the current. In matters of Principle, stand like a rock. “.   -   Thomas Jefferson 

Sent from my iPhone

Begin forwarded message:

> From: MARK DORNEY via ARC5 <arc5 at mailman.qth.net>
> Date: February 17, 2021 at 7:55:51 PM EST
> To: Hubert Miller <Kargo_cult at msn.com>
> Cc: arc5 at mailman.qth.net
> Subject: Re: [ARC5] BC-611 Production numbers...now throat mics
> 
> The Modern militaries that don’t use the throat mic include those of both Japan and Germany. Sounds like those folks weren’t all that impressed either. 
> 
> Mark D. 
> 
> “In matters of style, float with the current. In matters of Principle, stand like a rock. “.   -   Thomas Jefferson 
> 
> Sent from my iPhone
> 
>>> On Feb 17, 2021, at 7:48 PM, Hubert Miller <Kargo_cult at msn.com> wrote:
>>> 
>> 
>> This is a very interesting document, thanks.
>> 
>> I wonder if their statement that Japanese throat mics were magnetic devices is correct. I'll have to verify that. I don't see how a magnetic
>> 
>> element could drive a single tube modulator by itself. As for having to press the mic against one's throat when transmitting, there still is
>> 
>> some advantage in that the microphone is constantly with you, not dragging anywhere. T-17s didn't have any kind of clip feature.  -Hue
>> 
>> >After trying several of the U.S. throat mics, I still have to concur with the Bell Laboratory folks' conclusion on pages 131-133 of https://aafradio.org/docs/NDRC_Division_17_excerpts.pdf  (but I'll have to admit that those results don't cover any German mics - just Japanese, British, and the American T-30, along with the normal handheld mics like the T-17 for comparison.)  There's all sorts of interesting curves in there to provide some context about relative intelligibility.
>> 
>>          73,
>>  - Mike  KC4TOS
>> 
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