Posted in classic hacks, Radio Hacks Tagged amateur, cw, ham, morse, oscillator, QRP, QSO, radio, spy radio, vacuum tube ← Weird Electric Jet Skis Are Hitting The Waves ...

A QRP transmitter is designed to transmit at really low powers. The accepted upper power limit for QRP transmitters is 5 W, at least for modes like CW using FM or AM modulation.

When Your Solid-State Transmitter Fails, Have a Backup Ready You might want to keep an old, tube-type AM transmitter handy, just in case ...