Modes
Choose how you listen
Spot counts come from the current Hamdash DX-cluster window. Modes with zero spots may still be active — clusters under-report digital modes.
FT80 spots · 12 refs
15-second weak-signal digital mode. The busiest signal on HF.
FT40 spots · 9 refs
Faster 7.5-second cousin of FT8, built for contesting.
WSPR0 spots · 10 refs
Beacon-style propagation reporter, 2-minute cycles, milliwatts.
CW0 spots · 9 refs
Morse code. The original digital mode.
SSB0 spots · 1 refs
Single sideband voice. LSB below 10 MHz, USB above, by convention.
SSTV0 spots · 5 refs
Slow-scan television: still images over voice channels.
JS80 spots · 2 refs
Keyboard chat built on FT8's modulation.
PSK310 spots · 3 refs
Classic keyboard-to-keyboard narrowband text.
APRS0 spots · 3 refs
Packet position and messaging network on VHF.
FM0 spots · 5 refs
Local voice, repeaters and simplex.
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