[Hackrf-dev] ADS-B Out with HackRF - Signal not recognised?

[Joseph Greenwood]

Hi All,

I'm currently trying to implement an ADS-B Out transponder using a hackrf.

I've encoded the message I want to transmit in PPM form as a set of raw
bytes, and am then transmitting them using this flowgraph:

I'm then receiving using an RTL-SDR dongle, but despite the signal
apparently making it to the other side OK:


 it doesn't get picked up by GR-AIR-MODES or "dump1090" (
https://github.com/antirez/dump1090)

Does anyone have any idea why this is?

Any help would be much appreciated!

Thanks,
​
Joseph Greenwood.
ᐧ
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