[Amps] SB-230 drive....

[Roy]

"I have been fighting with my SB-230. Initially I was getting 500 watts CW 
key down with about 85 watts drive and over 600 on my peak reading meter on 
SSB.
> I slowly lost gain and finally I was only able to get about 300-400 key 
> down and about 450 ssb peak. I decided the 8873 may have died.
> Today I took the tube out and cleaned the Beryllium block and heat sink, 
> and also cleaned a black badly tarnished grid ring and replaced both 
> bypass caps. When ...(etc.)"


My SB-230's fil pin connection was charred from heating due to poor 
connection, lowering emmission.

73,   Roy     K6XK