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Re: QMX+ Diagnostics Video - Feedback Welcome


 

Hi Jon,
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much stuff. I watched the parts with "Diagnostics", "LPF scan" and "RF scan".
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  1. Diagnostics:
    For some bands the output is a bit low but not so bad except 40m, 60m and 80m. For these three bands 0W, no output.
    Because output was measured for the other bands I think the internal measurement is good enough for now.

  2. LPF sweep:
    The values are good and not so bad for 6m but bad for 30m, 40m, 60m and 80m.
  3. rf sweep:
    For 160 m ok, for 12m, 15m, 17m and 20m between good and bad and bad for 10m, 11m, 30m, 40m, 60m and 80m.
Lets start with LPF. This scan is using the TX path including the LPF section. The four bad bands are related to LPF1 and LPF2. You may use QMX LPF section from QRP Labs Wiki to check the LPF section.
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The rf scan is using the RX path including LPF section AND BPF section. Bad LPF are bad for rf sweep (30m ... 80m).
10m and 11m are related to BPF6. So check please this areas. But fix the LPF problems first.
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73 Ludwig

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