Francesco,

Have you been able to find anyone to help you with your SX-146? If not, I
may be able to.

First, please advise if you are attempting to rewire your transformer TO a
220 volt primary or change it FROM 220 V back to 120 VAC? At 120 VAC the
high voltage output of the transformer is 165 volts AC.

I have owned and operated an SX-146 since 1966 and just this last year
filled all of the optional slots. For the missing crystals contact Mel. at
MH Electronics in California. He will cut you a superb quality crystal in
HC-6 or HC-17 cases for only $18. Email him at or call 909
989 1976. I've ordered from him twice in the last couple months and his
turnaround has always been less than a week. He's a great alternative.Tell
him I sent you.

I have found exact replacement crystal filters on eBay. Keep watching. I
found mine for $5 apiece. I don't believe the sellers even know what they
are. Use search words such as "FILTER 6 KC" "FILTER .5 KC" "CRYSTAL 6 KC"
and "CRYSTAL .5 KC". Eventually you will find them.

By the way, I built a crystal calibrator using the schematic in the SX-146
manual. The original Hallicrafters socket is probably problematic although I
found a professional microphone plug that used pins very close to those on
the jack on the SX-146 chassis. Short of finding something like I did you
might try just replacing the SX-146 crystal calibrator jack with one that is
more compatible with the plug you install on your homebrew crystal
calibrator.

Good luck.

73 DE W9STB