While the PTO does need service at times. I have had to go in and push IC's into sockets and clean/reset plugs into sockets. Since this is NOT a synthesized rig there is no
"clock" just crystal oscillators and the PTO. I once had an
Argonaut that jumped frequency. Since it was in warranty
I called TenTec service and they sent me a new PTO and I
swapped it out. No more frequency jumping. I suppose the
warranty has run out on the Corsair (25 or so years ago?).
Good luck
Allen KA5N K2 #1107
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