Before my stroke in 2013, I had an idea for a very simple DSB transceiver for 10m.
This was never competed, but with 10m looking good again, now is an ideal time. With just a few watts Europe should be easy and you will work DX. Don't forget antennas are small and simple and CB verticals work well.
What I envisioned was a very simple, easily copied, DSB transceiver on a single, small, PCB. These days a simple phasing SSB rig may be possible with a synthesised VFO. This would be better, but the design goals, were simple, low cost and easy.
This would make a neat club project next winter. Imagine if all builders had a simple sideband transceiver for 10m that they built! I should be more than happy for someone to design this and do a PCB. No design rights, simple...
See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/10m-simple-sideband .
2 comments:
According to Hans , ceo of qrplabs, DSB is the only mode that can’t be used back to back. You can ONLY demodulate it using an SSB receiver. So two DSB rigs cannot communicate with each other. What are your comments on that?
btw - i am building a dedicated 40mhz ssb rx system that will listen on 40.680mhz for both FT8 and WSPR simultaneously.
73 Ken g4apb
I think Hans is strictly incorrect (although he is much brighter than me, HI!). Yes, DSB does need careful adjustment, but DSB transceivers CAN work back to back although this is much easier with SSB. Of course a simple DSB rig can be received without issues on an SSB rig. Most QSOs would be with SSB stations. I agree that a simple phasing SSB rig would be better though.
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