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QMX power out measument concerns


 

My QMX hi-band build is great so far. Am currently measuring power output. However, I have two concerns:

  1. The terminal emulator Diagnostics power output indicator always reads 0 watts out, even though I know there is close to 4-6W out depending on band. Any ideas why?

  2. Measuring power output inconsistencies: because the terminal diagnostics power is not working, I am fortunate to have other methods: a) QRPGuys power/swr/dummy load, b) MFJ-941E tuner analog power/swr meter and c) DSO Siglent 1202X-E.?

The scope is giving me power out on 20m using 12.5VDC of 5.8W (from 48.4 Vp-p), whereas both the other meters say about 3.8W out. My scope is calibrated and I believe quite accurate, so I am going with what it tells me, but it is disconcerting that two other meters register similar and lower values.


Any ideas on both concerns above appreciated.


73 Larry VE7EA?

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