[Elecraft] more power out measurement

Robert G. Strickland rcrgs at verizon.net
Tue Mar 20 18:30:06 EST 2007


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
rcrgs at verizon.net.usa
Syracuse, New York  USA



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