After getting his hands on this relic [Gregory Charvat] manage to hack it, converting the receiver into a transceiver. It may be old, but the R-390A is nothing to scoff at. It’s abilities ...
With the audio signal fed to HDSDR, [Aniss] was able to pick up a shortwave radio broadcaster. While this is by no means a high-performance receiver, building an SDR on a breadboard is still a ...
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