Hackaday (unofficial) March 29, 2023 4:00pm Two-Tube Spy Transmitter Fits in the Palm of Your Hand #classichacks #radiohacks #amateur #cw #ham #morse #oscillator #qrp #qso #radio #spyradio #vacuumtube #hackaday posted by pod_feeder_v2 Two-Tube Spy Transmitter Fits In The Palm Of Your Hand It’s been a long time since vacuum tubes were cutting-edge technology, but that doesn’t mean they don’t show up around here once in a while. And when they do, we like to feature t…
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