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Visualising 1090 MHz pulses

Posted: Fri Jul 21, 2017 9:38 pm
by vk4tec

Planes transmitt pulse position modulation on 1090 MHz

I am interested in seeing these pulses like an oscilloscope

Is it possible with the SDR play ?

The pulses are 56 bits and 112 bits and are very fast


Re: Visualising 1090 MHz pulses

Posted: Sun Jul 30, 2017 10:30 am
by F1BJB
It should be possible but the software is missing AFAIK.
A possible trick would be to record I/Q as an audio file with high 3 MHz sampling rate
and then to play it back much slower in audacity or another software able to display audio waveforms.