Throb-1
Spectrum
Sound

Throb-2
Spectrum
Sound

Throb-4
Spectrum
Sound

Throb-1X
Spectrum
Sound

Throb-2X
Spectrum
Sound

Throb-4X
Spectrum
Sound
all signals shown in x2 waterfall mode, tick marks at 100 Hz intervals, waterfall palette is "blue-2"

Description of THROB mode.