On 7/8/21 2:50 PM, john@kk9a.com wrote:
From an amplifier heating standpoint it probably makes very little
difference what power level you use with an Elecraft KPA1500. See the
Elecraft post on efficiency in the link below. I am not an amp guru but I
believe SPE Expert amps have different PA voltages which increases their
lower power efficiency.
http://mailman.qth.net/pipermail/elecraft/2018-August/259502.html
It is remarkably like a class "A" amplifier. If there were two
devices connected in class "B" and properly biased (like 99% of the 100
Watt transceivers out here) it would be an entirely different story.
I have been preaching (for years) the virtues of proper Class "B"
amplifier designs.
--
Ron W4BIN - Understanding is much better than
knowing how.U
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