[Amps] 5 kw amps -- why?

Vic Rosenthal vic at rakefet.com
Wed Oct 20 11:38:51 EDT 2004


R.Measures wrote:

> I bought this 195mph  Ferrari because it has no heating problems at 65mph.

That's not a good analogy, Rich.  You bought the Ferrari because it can 
accelerate faster in the 0-85 MPH range, because it handles well, etc.  There 
are NO similar advantages to having 5KW plate dissipation available in an 
amateur amplifier that is used at 1.5 KW output, if the tubes are cooled properly.

Actually, there is a possible advantage, but I don't know of anyone actually 
doing it:  if you have an exciter that has a class-A mode for low IMD, you could 
run the amp class-A as well, for super clean SSB.

-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco



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