Hi everyone,
I just assembled a classic band rf board (bought it from Sunny) and can't seem to get 20m and 10m to work. After tweaking, I'm getting about 5W and roughly 80% efficiency on 80/40 and 15m but 0W on 20m and 10m. My NanoVNA is showing me a (more or less) flat line from 1-50MHz for 20 and 10m so I assume that the issue is with the filters. But what could it be? Connectivity is given, I checked that x times. Any idea?
73!
Simon
Classic bands: No output on 20/10m
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Re: Classic bands: No output on 20/10m
Did you set your LPF in Manu to "Classical" Bands setting ?
If yes, let´s see your measurement setup in Detail: How is the NanoVNA Connected, show a detailed shot of your NanoVNA Screen, so we can see the settings.
73 Manuel; DL2MAN
If yes, let´s see your measurement setup in Detail: How is the NanoVNA Connected, show a detailed shot of your NanoVNA Screen, so we can see the settings.
73 Manuel; DL2MAN
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Re: Classic bands: No output on 20/10m
I can't tell for sure but it looks like you might have a solder bridge on U7.
Just a thought.
Good luck, I really enjoy this little rig.
Mike
Just a thought.
Good luck, I really enjoy this little rig.
Mike
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Re: Classic bands: No output on 20/10m
Mike,
You're amazing! Indeed, there was a solder bridge on U7 affecting the 10m and 20m Filter
Efficiency on 10m is only around 50% but I'm glad it's working.
73!
Last edited by DO1OKE on 26 Sep 2022, 16:11, edited 1 time in total.
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Re: Classic bands: No output on 20/10m
Awesome!
Glad I could help.
73
Glad I could help.
73
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Re: Classic bands: No output on 20/10m
wb9oqb,
Well done. - ad0wo
Well done. - ad0wo
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