[Hackrf-dev] External Clock

[Michael Ossmann]

On Tue, Feb 17, 2015 at 08:09:40AM -0800, James Brown wrote:
>
> I would like to lock my HackRf One to a GPS disciplined 10 MHz clock.
> Its output is a +/- 500 mV signal.
> Must this be conditioned to drive my HackRf?

Yes, you'll need to convert it to be 0 to 3 V.  See:

https://github.com/mossmann/hackrf/wiki/HackRF-One#external-clock-interface-clkin-and-clkout

Mike