DIY Engineering @DIYEngineering
Two transistor superheterodyne shortwave receiver – Dilshan Jayakody writes: This is two transistor and two IF tra… ow.ly/2Vr6oi
ARRL @arrl
US Amateur Radio Numbers Reach an All-Time High: Amateur Radio growth in the US continues to soar. At the end … bit.ly/1AJwmxG
Quadrus @QuadrusSDR
@kb6nu phase-coherent multi-channel SDR receiver platform: spectrafold.com/quadrus/
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