[Hallicrafters] SX-71 capacitor grommets, the REST of the story...

Troglodite at aol.com Troglodite at aol.com
Wed Feb 18 10:06:12 EST 2004


In a message dated 2/18/04 8:29:51 AM Central Standard Time, rjb at lynden.com 
writes:

>  So what?? Before this mod, the radio would break into oscillation on band 4
>  (12.8 - 34 mHz) whenever i QSY'd rapidly (ie, by spinning the main tuning
>  knob). Once the knob stopped spinning the oscillation usually quit in a few
>  seconds. Happy to say it no longer does this. For jollies i even replaced
>  the 6BA6 RF amp with a 6DC6 - much higher front-end gain and still no
>  oscillation.

Bob,

Congratulations. I've spent many an hour debating whether to tackle what 
looks like a tough job, where the rewards are not completely known. Most of the 
time, I've found it's worth it. In fact, sometimes solving the mystery of why 
certain things were done, or just how the original manufacturers managed to do 
it, is a kind of Sherlock Holmes episode. It can be fun as long as you keep 
your sense of humor and have a reasonable amount of patience. Enjoy that radio.

Doug Moore KB9TMY (Formerly K6HWY)



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