[Drakelist] TR7 audio oscillation

[hpolkscw]

I have a TR-7, serial, 45XX, that breaks into oscillation on both  
receive and transmit after some time warming up.  However, it  
sometimes howls from startup.
I remember reading some messages some time ago about a fix, which I  
think was a ferrite bead on a component leg.  However, I cannot find  
this message after much searching, both on my computer and the archives.
Can anyone point me in the direction of the message or provide the  
particulars of the modification.
Thanks
Harold
N3HP
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