08-21-2014, 10:56 PM
I find it sort of odd that Just Radios would even carry polystyrene capacitors, those are not very common anymore. They used to use those in German sets of the 1950s and 60s as a substitute for mica caps so I'm not even sure that they are still being made. Precision ceramic, with a zero temperature coefficient, has largely replaced both mica and polystyrene capacitors these days, except for high frequency stuff.
Regards
Arran
Regards
Arran