Clark, The "secret" is to properly balance and calibrate the KAT2 wattmeter.
If you do the balance with a dummy load that is truly a 50 ohm resistive load ( a 1.13 SWR just does not "cut it"), then adjust the forward KAT2 pot to give you the same K2 display as indicated by the LP-100, your power should track nicely.
Your K2 power output does depend on the correct calibration of the KAT2 wattmeter.
73, Don W3FPR On 12/17/2018 9:03 PM, engineercm wrote:
I'm becoming more active in QRP contesting and need to make sure that my power is <5W. I thought I was aligned ok until I put my LP100A into the shack (what a wonderful instrument). When Power Control = 5.0, the LP100A = 3.0. Now, I want to be below 5.0, but not that low! To reach LP100A = 5, Power Control must be set at 7.5 (40m) and 8.5 (20m). This is with the ATU = Cal(P), which removes the matching circuits. The dummy load is a MFJ-264; the LP100A SWR = 1.13.
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