On 22 Nov 2004 at 20:23, [EMAIL PROTECTED] wrote: > Going to shorten it's life considerably.
Theoretically maybe. Have you tried it. How can you know for sure? Theory says a bumble bee can't fly. My 811A tubes never burned up. > To properly adjust a linear amp for AM it is necessary to tune the thing up > for the peak power > level, i.e., 200 watts for a 50W carrier. The linear will be about 60% > efficient at this output level. > Then WITHOUT CHANGING THE TUNING adjust the output from the AM exciter to > provide for > 50W out of the linear with no modulation. The problem here is that the linear > will now only be > running about 30% efficiency under carrier-only conditions and the 811 would > be dissipating > something like 100+ watts. The 811A, of course, is only rated at 65 watts. > > Dennis D. W7QHO > Glendale, CA
