more power out measurement
Posted by
RobertG on
Mar 21, 2007; 12:30am
URL: http://elecraft.85.s1.nabble.com/more-power-out-measurement-tp444951.html
I have a dummy load that I made up out of 10x 510 ohm resistors in parallel
[51 ohms, 30w]. I checked this with my MFJ 259B that says it's flat on all
the HF bands. I then hook this load directly to the output jack and measure
the voltage across it using the K2 RF probe and a DMM. I calculate the
expected RMS voltage as a function of power. I then increase K2/100 power
until I see the expected voltage [power], and then set R26 so that the LCD
shows the "correct" power.
This all sounds okay in theory. Does any one have a comment on the accuracy
of the setting using this method and/or "hidden variables" that I may have
missed? Thanks much.
...robert #5957
Robert G. Strickland PhD ABPH - KE2WY
[hidden email]
Syracuse, New York USA
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