“Had my DX-440 now for about 25 years....still works like a charm. “
Did you do the “Anti chuff” mod to it?
I am the guy who originally came up with that and posted it on the old GEnie network back in the bad old days before we were all on the internet. It became a common and well known mod for that radio.
I sent my 440 to a guy in FL who modded it to improve the ssb performance. Work like a charm. What I never liked about those radios is their tendancy to unexpectedly “skip” a few khz when tuning manually. I have a 394 that does the same thing.