[Milsurplus] Old microphone

[Michael Hanz]

Rian Robison wrote:
> 
> The LM-10 would be cabled to the intercom amp so the person setting the
> freq. of a TX could hear the zero beat in his headset while near the TX.
> The LM would be mounted somewhere where a headset lead would not reach it
> when standing/setting by a TX.  The shipboard TXs each had a jack on them
> that could be made live from the LM usually mounted somewhere else in the TX
> compartment.

That's an interesting perspective, Rian.  I find no documentation on
incorporating an LM *audio* feed to the interphone amp in any WWII Navy
airframe.  In the usual aircraft interphone circuits I'm familiar with,
there would be no reason to feed the LM audio to the rest of the aircrew
- it was used by the radio operator alone, which is why I asked the
question.  In a private note, Bob Wilder mentioned the cabling being
essentially to deliver power to the LM, which is certainly the way they
used it in Navy airplanes.  I appreciate the different viewpoint!

73,
Mike