Wow, you can see the look of homebrew satisfaction as Nate works Idaho from California with his homebrew Double Sideband Transceiver. It is a good thing that Nate got that frying pan into the shack before he was banned from the kitchen.
Nate writes:
I finally got my DCR to be a DSB transceiver. I had a lot of trouble with transmitted RF getting back in to the VFO and causing distortion. While I imagine I could have tried putting the VFO in metal box, I instead opted to move the VFO to a 4.7-5 MHz range and then mix that with a 12 MHz crystal oscillator. Now the VFO is at a frequency unaffected by transmit RF. This mixer and crystal oscillator are on the breadboard and from SSDRA. The transmit amplifier chain was taken from Fahran's Daylight Again radio. I just got a 570 mile contact on 5 watts - conditions are good. If there is interest let me know and I'll share my schematic.
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I looked this morning and I have 100 DSB posts on the SolderSmoke blog. There are lots of ideas there on how to homebrew for DSB, many of them from Cuba, many covering DSB rigs that I built in the Azores, and others that I used in the Dominican Republic. Check it out:
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