In-browser HackRF ATC listener · VHF airband AM · EXPERIMENTAL · ← back to radar
— MHz
pick a frequency below
Scans the channels of the loaded airport
Scanner cycles channels and stops on any with activity, then resumes when it goes quiet. (Start the radio first.)
Desktop Chrome/Edge only. Plug in your HackRF, click Start, pick it in the popup.
How it works: the HackRF tunes to the channel (with a 250 kHz digital IF to dodge the DC spur), the page mixes it to baseband, low-pass-decimates 2 MS/s down to 10 kHz audio, AM-envelope-detects it, and plays it through your speakers — all over WebUSB, nothing installed. It listens to one frequency at a time. Tower/ground/clearance are usually busiest; approach & departure (Potomac) cover the whole DC area. Gains are fixed (LNA 24 / VGA 30 / amp off); if audio is weak or noisy, try a different channel or a 1090/airband whip antenna.
Experimental & unverified. AM demod in JS is CPU-heavy and adjacent-channel rejection is basic. Listening to ATC is legal in the US; transmitting is not. If a channel is dead, no one's talking — try a busier one.