[EMAIL PROTECTED] wrote:
Quoting K2VCO:
Let's say you have a 1.5KW amplifier. Overall efficiency might be
50%, so it >draws 3KW key down.
What does it draw key-up?
Not so much, if it's instant-on, solid state with temperature-controlled
fans like the KPA800. But you are correct for a 'traditional' tube
amplifier. Especially one that isn't instant-on and tends to be left on
for long periods.
SSB will be cheaper.
How do you figure? The duty cycles are about the same. SSB may even
have a higher duty cycle if you turn the processor on.
I was assuming a duty cycle of 33% for SSB. Yes, I did not take heavy
processing into account! But I think that without processing the duty
cycle for ssb is definitely lower than CW.
btw, the duty cycle of CW is about 44%: Consider the standard word
"PARIS". With all the spaces, it's 50 time units long. But the key is
down only 22 of those times.
Also most operators use long spaces between sentences. I assumed 50% as
a worst case. And don't forget that I left out one of the 50%'s from my
calculation!
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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