Of course caps a combos of standard values in LPF 33+30 =63pF and 82+22+22 =226pF
73
Ross
Sent from my iPhone 6
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On 22 Sep 2023, at 15:00, Afghan Kabulldust via groups.io <kabulldust@...> wrote:
?Roberto et al,
Here¡¯s my design for a 6m QDX-M and some of the test results. I only have a TinySA to check the spectrum but it¡¯s pretty close to Hans¡¯ up-market Spectrometer.
You¡¯ll see BPF is 11t on a T50-6 and the cap is 22pF.
RF sweep and image sweep from built in test.
Elsie circuit and plots, you¡¯ll note the number of turns on T37-17s.
I hope that helps.
73
Ross
Sent from my iPhone 6
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