[Hackrf-dev] Replaying a captured radio signal

[Michael Ossmann]

On Sat, Feb 03, 2018 at 10:39:08PM +0100, Jahn wrote:
>
> At https://greatscottgadgets.com/sdr/11/
> there is tutorial how to use HackRF to replay a captured radio signal.
> But how to capture the signal if I do not know the exact frequency?

You'll need to determine the operating frequency of your target device before
you can capture a signal.  I discuss how to use information from the FCC to
determine the operating frequency in this video:

http://greatscottgadgets.com/sdr/8/

Another popular solution is to use qspectrumanalyzer with hackrf_sweep at close
range to the target device.

Mike