[Milsurplus] Headset - ?'s

[WA5CAB at cs.com]

The M-6/UR and M-6A/UR are carbon lip mics, part of Microphone Assembly 
M-5/UR.  Used in aircraft at altitudes below 12,000 feet..  Put it in series 
with a 6 v battery and a resistor.  Adjust current to about 55 mA.  Put an 
analog AC voltmeter across the element and blow on or whistle at the element.  
Or put it in front of a loudspeaker.  Or simplest, connect an ohmmeter to it 
and blow or whistle.

M-6/UR is listed in the 1945 SIG 5, but not M-6A.

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480

In a message dated 01/18/2016 21:19:56 PM Central Standard Time, 
jphutch60bj at gmail.com writes: 
> Next Microphone M6-A/UR, shows resistance.
> 
> Quick way to check if the microphone works, with out hooking up an amp?
>     Is the microphone dynamic or carbon could not find a reference using 
> a quick google search?
> 
> Is there a better rubber restorer solution than Gummi Pflege?
> 
> Thanks
> Hutch
> 
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