Question About HR-10 Reciever - Help!

[Mike Hardie]

Fellow Heath enthusiasts,
An HR-10 receiver has a problem that has me baffled.  The BFO frequency is
"pulled" by strong signals or by changing the RF gain control in its upper
range, sort of like chirp but on a receiver.  Switching the AVC off helps
reduce this but it's still there.  There's nothing obviously wrong,
voltages check out pretty good except the B+ is a little high, cutting it
back to the prescribed 210 vdc from the 6X4 by inserting a resistor makes
the problem worse.  The resistors that should be around the power supply
are all OK and I've replaced the 3 x 20 uF cap.  Any ideas?

Mike

Sponsored by the City of Tempe 

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