[ARC5] BC-669 Vet Project: PE-110 Power Supply

[David Stinson]

Re: BC-669 Mystery Relay.
For those, like me, scratching their heads over why the factory 
installed a 12VDC Antenna/TR relay in place of a 115VAC relay, here is a 
link to the manual:

BC-669 Manual 1944 
<https://drive.google.com/open?id=0B1zXYo8XYQS8MVpnV3I4NmRCUkE>

The PE-110 power supply, which fits at least the -A, -B, -C, -AM, -BM, 
-CM models (the most common).  The PE-110 supply is on page 25.  VP-1 is 
a vibro-pack to provide Receiver B+ from 12 VDC battery, but not 
Transmit power.  That's strictly 115VAC, so a 12 VDC TR relay is 
strange.  PL2 on the Modulator deck mates to PL6 on the power supply.

73 DE Dave AB5S




---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/arc5/attachments/20190924/c4410f9e/attachment.html>