[Boatanchors] Squeal

[Chuck Moore]

Check the electrolytic in the cathode of the audio output. 

They are getting very old and may even be open.

 

 

Chuck Moore
wcmoore at verizon.net

 

 

-----Original Message-----
From: RAY FRIESS <rayfrijr at msn.com>
To: boatanchors <boatanchors at mailman.qth.net>; boatanchors <boatanchors at puck.nether.net>
Sent: Fri, Jul 6, 2018 2:23 pm
Subject: [Boatanchors] Squeal

Heath SB101.  When I turn audio gain up over one quarter of range, radio takes off into a loud squeal.  RF gain or mode settings make no difference.  Suggestions?  Bad PCB ground maybe?

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