Two different animals.
Harmonics and spurs are regulated by the FCC to be at least -43dB down
on HF and -60dB down on 6 meters.
The K3(s) meets those specs easily as evidenced by a couple of QST reviews.
IMD is not regulated I think because most hams don't have the test
equipment to pull it off accurately.
All of this IMD hullabaloo would quickly go away if the manufacturers
would switch from 12V finals to 50V finals or used pre-distortion of
some sort. How much will Ham's pay to clean up the IMD problem when the
FCC doesn't regulate it?
On 12/30/2015 9:09 PM, a...@sbcglobal.net wrote:
Who has some measured 2 tone IMD test figures for an actual K3/K3S at full and
reduced power levels and at supply voltage levels between 12-15 volts?Must
assume the Harmonic and Spurious Outputs exceed 50dB below carrier @ 100W
within ham bands as per Elecraft manual specs. HOW much better than 50dB with
above variables is the question? Can someone share these figures?
73,Mike AC5P
--
R. Kevin Stover
AC0H
ARRL
FISTS #11993
SKCC #215
NAQCC #3441
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