According to the LM-13 manual, 2 each 6 volt batteries in series and 4 each 45 volt batteries also in series.

See: https://bama.edebris.com/download/military/lm13/LM-13.PDF

Seems that all LMs are basically the same according to pages 1 & 2 of above.

Regards,
Jim

Logic: Method used to arrive at the wrong conclusion, with confidence.  Murphy


-----Original Message-----
From: jphutch60bj <jphutch60bj@gmail.com>
To: milsurplus@mailman.qth.net
Sent: Sat, Dec 10, 2022 9:18 pm
Subject: [Milsurplus] LM- Frequency Meter - B and A battery voltages
Been looking in vain for A and B battery voltage information  in "1940"'s

My LM- frequency meter battery connector has 5 connectors 4 look to be
the same profile and seem to be connected in series, the 5'th connector
is different seems top be the B battery connection.

were the A batteries 1.5, 3 or 6 volt? for 3 volt 3X4 = 12   if 6 volt; 
6X4 is 24  thinking 1.5V was a bit low since the wire size is not large.

was the B battery voltage:120, 90, 45 or 22.5 volt ?  I'm thinking 90 volt?

If there is a web page that would be sufficient.

Found this :
No average voltages were specified?


Thanks

Hutch

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