Discussion in 'Amateur Radio Amplifiers' started by K9NRA, Jun 11, 2015.
Yes that will work fine, just keep the connections short.
I'd use the .017" x 0.5" straps. And as indicated above, use one strap directly to ground at each grid pin.
The parasitic suppressors you pictured above aren't anything remotely close to "stock." I'd go back to the stock design, it worked fine and the carbon comp resistors would drift high in value over time and with heat but that usually didn't matter much.
Agreed on all counts.
Only problem is that is hard to find exact carbon comp resistors these days, unless they are very old stock. Modern carbon resistors may look the same, but they are often a bit more inductive, which is critical for VHF parasitic suppressor applications.
Ohmite OY series directly replace the carbon comps and are actually better (more stable, don't drift so much).
Can those "OY" resistors be mounted inside the suppressor coil, or should they be mounted outside the coil??
There shouldn't be any problem mounting them inside provided you make the coil the same dimensions as the stock coil.
Wish I had an SB-220 to have problems with!!! I might crack a few pileups I cant now!
Sell a few of your duplicate, triplicate, quadruplicate, etc., hoard and you will have plenty of money to purchase an SB-220!
Or, acquire a couple of the inexpensive Russian triodes and build an amplifier.
Either way, you can acquire an at, or closely approaching, maximum legal power at very little out-of-pocket expense. I do realize that getting rid of even a single item from your "stash" would produce withdrawl symptoms worse than denying heroin from a drug addict. Unfortunately, "cold turkey" is the only way to really take care of such an extensive habit and to achieve certain goals in life.
I have them, make them and sell them. Clones of originals.