At 04:31 AM 1/11/2005, you wrote:
73s to all, regarding Dick's problem i'd try to match 1st the Ranger's output pwr with the needed input pwr of one of the amps.The choice of the amp depends on the output pwr someone wants to "push on the air".Saw a Ranger there in Ebay and think it's using something like 6L6s or anyway not high power output tubes. "Playing"with the outputs B+,or grid HV or grid pollution resistance,in order to reduce or increase the output pwr and match it with amp's input it's easy.Resistances for the B+ and grid HV and a meter to measure.The greatest the 2nd grid resistance is in value the worst.It's "pushing hard on limits" the tube depending on the B+ and grid voltages also. Hope it helps, Chris SV1DAF.
If I wanted more than 100w of AM (out of my Collins 23V-3) then I'd use it for carrier only then plate modulate an amplifier with a modulation transformer (if I could find one) plus a speech amp. Then I'd run the maximum legal AM power of 375 watts.
But then I run AM on the KW-1 (pure DSB AM) & sometimes the KWS-1 (which does carrier plus one sideband) at the 375w limit. I'd prefer to do AM at a kilowatt but thats not legal anymore.
I wonder how many AM'ers run more than the legal 375 watts? I've thought about it...
