What sort of capacitors should I use? I decided to use 'orange drop' caps for the 400V 'high quality'ones. Would mica caps work just as well, and are there other options? Also, what type of cap would you suggest for the polarized caps (I assume aluminum electrolytic caps are the first option, I just want to know if anyone tried alternatives)?
What is the voltage rating for the trimmer caps? Is it ok to use slightly different values for them (instead of 9-50p, 4-50p or 8-45p)?, and can anyone tell me an approximate value for Variable capacitor C11?
Any suggestions will be appreciated.