Ummm ... I don't think that was what was suggested at all. I read the
post to be an observation of a *relative* condition. All amplifiers [at
least that I've ever encountered] exhibit increasing distortion near
their rated power limits. I've always assumed that's why distortion
numbers are almost always accompanied by the power when the measurements
were taken.
My K3/100 is a K3/10 below about 15 watts ... the 100 W amplifier
switches out of the circuit. I think all that the post was trying to
point out is that, from 100 W downward, the distortion will decrease
*until* the KPA3 cuts out. At that point, the LP amplifier/exciter is
near it's max power, and it's distortion will probably be higher than
the values from the KPA3 operating just above that power. In any case,
absolute distortion from a K3/<anything> is still among the lowest in
the marketplace.
73,
Fred K6DGW
- Northern California Contest Club
- CU in the Cal QSO Party 1-2 Oct 2016
- www.cqp.org
On 12/30/2015 2:13 PM, Edward R Cole wrote:
Wes,
So you are saying all of us with K3/10 should never run at 10w+ because
the LPA is a terrible producer of IMD? Does that also apply to the KX3
which is also a 10-12w radio (160-24m)?
I'm finding that hard to swallow considering the QRP background of the
Elecraft owners.
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