-----Original Message-----
From: David Stinson <arc5@ix.netcom.com>
To: milsurplus@mailman <milsurplus@mailman.qth.net>; Boatanchors@mailman <boatanchors@mailman.qth.net>
Sent: Mon, May 2, 2022 9:36 pm
Subject: [Boatanchors] RadioMarine Corporation AR-8506-B Receiver Resurrected.
WWII "Liberty Ship" RmCA AR-8506-B receiver
gets back to work. This one was challenging.
(Got it going, Doug! TNX OM)
Still need to finish alignment.
Video:
Question:
I probably should know this, but I don't want
to assume. Can someone please tell me
the purpose of the capacitor across the
Audio Output transformer primary?
C-141 from plate to screen of the 25L6.
If it's included, or even reduced from .005
to .001, the Audio Output breaks into
"motor boat" oscillation. Lower value gives
slower reflex oscillation, but remove it
completely and it goes away.
The coupling and bypass caps
have been replaced, as have the power supply
filter caps of course. Addition of more
bypassing on the B+ buss has no effect.
The bad resistors also replaced,
so the grid isn't floating.
Hints and Kinks about this rig
if anyone is interested.
GL OM ES 73 DE Dave AB5S
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