Re: [Amps] Quad Tube 4cx800 hf amp

["Phil Clements" <philc@texascellnet.com>]

> This is exactly what I am talking about. At what power level do you tune
> the
> amp up at? If you tune it up at 1500 watts output and you get 55.5%
> efficiency then you do not have any headroom above 1500 watts. It will
> flattop if you push it any harder.
> 
> If you tune the amp up at 4 or 5 kw out and operate it at 1500 watts out
> you
> have lots of headroom but you no longer have 55.5% efficiency at 1500
> watts
> out. The efficiency will be on the order of 35%.

Can we say "NO-TUNE" boys and girls?
There is nothing to tune on this amp except the input coils.
Efficiency only matters if you are pushing max. dissipation limits.
You won't notice your electric meter spinning any slower than mine.

What is the efficiency of a Corvette going 40 mph? Who cares?

(((73)))
Phil, K5PC



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