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In Reply to: RE: It depends. posted by Michael Samra on May 19, 2017 at 13:51:47
One problem with all old preamps of that era is that moving parts like switches and pots are usually heavily worn. My time is better spent designing from scratch (using newer, better parts and technology) than chasing all over the planet looking for replacements. Building new also provides an opportunity to remedy all the issues that engineers of the day either didn't know about or were forced to accept due to the bean counters. I've learned some of the latter the hard way with ham gear. You'd be surprised what was allowed to come out of a transmitter or RF amplifier made in the '50s or '60s, simply because the design was vetted by a factory without access to a spectrum analyzer or 100 MHz scope.
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Buy Chinese. Bury freedom.
Follow Ups:
Bypass those switches and if you look at the circuit,it isn't all working at once..Now the Citation 4 has tone controls and you can put tone switches in it's place.They do have a bypass switch.If you clean and polish the wafer switches,you are usually good to go.What some people do is put the modern gold contact switches in place of the wafer switches and then use mini toggles in place of the slide switches.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
and they claimed the power transformer was four times the size of the original which is nonsense. For five grand,it got great reviews but they copied the original and put in better switches and a MC step-up trafo.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
nada aqui
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Buy Chinese. Bury freedom.
We need some dynamite.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
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