QMX Diagnostic Power Out Vs Meter

[email protected] #118601 My QMX Rev 2 Putty Diagnostic is showing <.5w with a voltage of 10.1. ?Supply voltage into the QMX was 11.9. ?My SWR/power meter is a good CB unit that shows 2watts on 80m, and about 2.5 watts on the other bands. This CB meter should differentiate between .5 and 2.5 watts I would think. I’ve been making contacts on 20m FT8 on a 4ft magloop that’s only 70% efficient on 20m. A <.5w signal probably wouldn’t be heard on that antenna…dunno. ? If the CB meter is wrong, could I have blown my finals and how could I check? ?Could the diagnostic be wrong? -- Bill Harbour K4VIB
[email protected] #118691 I've got a homebrew QRP power meter (photo of schematic) and it showed 17.7v (+3w) in my DVM.? That's quite a bit more than <.5w!? I'm gonna go back and reflow the toroids and transformers.? Maybe that'll show a better power out reading in the diagnostics. -- Bill Harbour K4VIB
Crni Mrki, DK4BN All Messages By This Member #118693 Wrongly wound SWR transformer? toggle quoted message Show quoted text On Tue, Feb 27, 2024 at 1:53?PM bcharbour78 via <bcharbour78=[email protected]> wrote: I've got a homebrew QRP power meter (photo of schematic) and it showed 17.7v (+3w) in my DVM.? That's quite a bit more than <.5w!? I'm gonna go back and reflow the toroids and transformers.? Maybe that'll show a better power out reading in the diagnostics. -- Bill Harbour K4VIB

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