I'd welcome your views on how to measure output power
of my newly-bilt K2 with resonable accuracy. The operative
word here may be "reasonable". (:-))
I have a quality 50 ohm dummy load, a Bird with a 50W HF
element, the built-in wattmeter in the K2/KAT2, and an OHR
WM-2. As one would expect, they all read differently ... too
differently.
At first thought one would might think the Bird should be my
reference, but it's accuracy is +/- 5% of full scale ... 2.5 watts
in this case. I've calibrated the WM-2 with a Fluke DVM,
but the accuracy of the Fluke can only be assumed. I don't
know enough about the sensing and measurement portion of
the K2/KAT2 to have a "feel" for it's accuracy. I also have
the Elecraft RF probe to use with the DVM, but no reference
for calibration. Unfortunately I don't have access to a quality
'scope to use as a reference.
I tend to "trust" the WM-2 as it's accuracy is tied to the DVM
used to calibrate it. The DVM is most likely my most accurate
measurement device that I have available ... for now, at least.
73! Ken Kopp - K0PP
[EMAIL PROTECTED]
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