03-20-2014, 06:46 AM
On the issue of replacing capacitors with ceramic types, always look at the specifications of the part you are considering for replacement. There are COG and/or NPO type ceramic capacitors that work just as good as silver mica capacitors for radio frequency circuits. Some are even available with negative temperature coefficients for temperature compensation in oscillator circuits (to eliminate frequency drift during warm-up). Of course many of these old radios did not bother with temperature compensation, so that would likely be overkill. Look for capacitors with not more than 10% tolerance. Most of us look for 5% or less depending on use. You can always get some good advice here on the phorum if in doubt.
Just make sure that the voltage rating of the replacement capacitor is as high or higher than the original part along with value and physical size compatibility and you should be good to go. If you are restuffing old capacitor bodies to keep original appearance, the number of possible replacements may be smaller.
Joe
Just make sure that the voltage rating of the replacement capacitor is as high or higher than the original part along with value and physical size compatibility and you should be good to go. If you are restuffing old capacitor bodies to keep original appearance, the number of possible replacements may be smaller.
Joe
