Hear amateur radio happening right now.
You do not need an amateur radio license to listen. Pick a starting point below and WC4DC will open a public software-defined receiver already tuned near that activity.
Choose what you want to hear
These are starting frequencies, not guaranteed conversations. If it is quiet, use the receiver waterfall and tune nearby.
40 Meter Voice
Hear regional and longer-distance single-sideband conversations. Tune around if the starting frequency is quiet.
Often good later in the day and evening Listen now ↗20 Meter Voice
A popular HF band for contacts across the country and around the world.
Often active during daylight and early evening Listen now ↗Morse / CW
Listen for the distinctive rhythm of Morse-code contacts. Move a little up or down the band to find a signal.
Activity varies throughout the day Listen now ↗Digital / FT8
Hear short synchronized bursts used by FT8 and other computer-assisted weak-signal contacts.
Frequently active when 20 meters is open Listen now ↗10 Meter Voice
A Technician-friendly HF voice area. If the band is open, signals can arrive from surprisingly far away.
Can be spectacular when propagation opens Listen now ↗Public receivers
Public receivers are provided by independent operators. Availability, antennas, time limits, and connection rules are controlled by each receiver owner.
Middle Tennessee KiwiSDR
Middle Tennessee, USA
Receiver credit: WPC4ALPWolf River Monitoring Station
Fayette County, Tennessee
Receiver credit: K2SWLBirmingham KiwiSDR
Birmingham, Alabama
Receiver credit: N4DKDWhat am I hearing?
Normal-sounding voice conversations, but single sideband can sound strange if the receiver is slightly off frequency. Fine-tune until voices sound natural.
Morse code sent as short and long tones. Different stations may be very close together, so zooming the waterfall helps.
Short digital bursts synchronized to time. It may sound like repeating musical or electronic tones rather than a conversation.
The scrolling spectrum display is a visual picture of radio activity. Bright vertical traces usually indicate signals you can click and hear.
