Hello, I have a problem using the Adalm-Pluto together with the SDR-console for QO-100 communications. So far, everything works fine except of full duplex. Anytime I switch from RX to TX the console waterfall becomes completely noisy and no signal is received anymore. All full duplex adjustments were done in the console. For debugging I tried to reduce the output power of the pluto in the console but even for very small values the mentioned phenomenon occurs. Therefore I guess it is not a HF problem (e.g. interference between TX and RX branches) but rather a software problem within the pluto, maybe a missing variable setting.
Does anybody has an idea to circle the problem or even solving it.
Thanks in advance!
Gero
Adalm Pluto - Full Duplex
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Simon G4ELI
- Posts: 2134
- Joined: Thu Aug 06, 2020 7:27 am
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Re: Adalm Pluto - Full Duplex
Hi,
Please add screenshots.
Please add screenshots.
Re: Adalm Pluto - Full Duplex
I'll send screenhots within next week since the equipment is in the school. Cheers!
Re: Adalm Pluto - Full Duplex
Problem solved!
When one switches to TX the voltage 12 V for both the PA and the LNB dropped by almost 0,6 V. This value is not enough in order to supply sufficiently the LNB and hence no signal were received.
We checked that by an independent voltage supply for the LNB and now it works perfectly.
73 Gero DL5KLX
When one switches to TX the voltage 12 V for both the PA and the LNB dropped by almost 0,6 V. This value is not enough in order to supply sufficiently the LNB and hence no signal were received.
We checked that by an independent voltage supply for the LNB and now it works perfectly.
73 Gero DL5KLX