I have been using a variety of amplifiers and have some questions which
have been bothering me for years. I have spoken to many experts and
perhaps the members of this reflector can help/explain!!!!!
Question 1: Whya are some amplifiers so easy to tune with swr of 2-3and
others are real bears? Example: I have two(2) LK55o, 3 tube 3-500z
amps which eat up swr of 2-3 and are trivial to switch bands es tune
over a reasable bandwidth, ie the cw portion or the ssb portion of the
bands. Measured forward power =1800w reflecdted power =300watts (Bird
non peak measuring unit with 2500w insert). The same thing happens
with a MLA2500 at v47kp. No problem tuning and switching bands quickly.
A Commander 2500 was a real bear to tune!!!Changing bands etc was very
difficult and the bandwith for the tuning was narrow.
question2: It is my understandiung that the net output power as I
reported above ie 1800 fwd, 300w ref (birdetc) is 1500 watts? Correct
or not??
I have other questions but these are good for starters.
Any help is appreciated.
w2ox/v47kp alex
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