Narrow FM voice, ±2.5–5 kHz deviation. The workhorse of two-way radio.
A slim solid bar, keying up and down as people talk.
Ham 2 m/70 cm repeaters, PMR446, public-service and business handhelds.
SPECTRA synthesises Narrowband FM in your browser, so you can watch its waterfall signature and hear it demodulated without any radio hardware.
Open the live receiver →