[Heath] SB301 / 401 Transceive operation AGC
WB4LNM at aol.com
WB4LNM at aol.com
Tue Mar 15 17:49:23 EDT 2011
I have just finished putting all new electrolytic caps and tubes and
resistors where needed in a set of SB301 / 401 twins for the local University
radio club. The tune up went fine, and the audio really sounds excellent.
The set has only been operated a couple of times on the air since then, and
it probably sat for 4-5 years with no operation before my refurbishment.
My sense is that *occasionally* the AGC in the receiver is slow to recover
after coming out of transmit. Not always, but sometimes.
Since there are many aficionados of this fine transmitter-receiver pair on
the list, I thought before probing I'd first ask for any 'frequently made
repairs' in the AGC if this is a common symptom. No need reinventing the
wheel. Perhaps I just need to get in and clean the relay contacts or
something. The AGC seems to work nicely otherwise, including the off / fast /
slow switch.
Many thanks for your time in reading this and for your responses. 73
John... WB4LNM "One of the Hams from Heath"
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