Robert X. Seger

I'm seeing similar results (one channel has positive error, another has negative), not sure what to make of it: ``` kalibrate-hackrf $ src/kal -s EGSM -g 40 -a 1 -l...

Same with firmware 2015.07.2 https://github.com/scateu/kalibrate-hackrf/issues/2#issuecomment-224487715 - but to answer the original question, -33 ppm for one channel and +38 ppm for another doesn't make sense, something's wrong. According to the...

Adding RTL-SDR support may also help in investigating the cause of https://github.com/scateu/kalibrate-hackrf/issues/6 Is it right (wildly inconsistent results on different channels, e.g. -33.570 ppm vs 38.369 ppm), for comparison. to...

Instead of platform-specific SDR libraries, consider using a vendor-neutral library, e.g. [SoapySDR](https://github.com/pothosware/SoapySDR) (as used by [CubicSDR](https://github.com/cjcliffe/CubicSDR), even has [Homebrew recipes](https://github.com/pothosware/homebrew-pothos/wiki)) or [gr-osmosdr](http://sdr.osmocom.org/trac/wiki/GrOsmoSDR)

Maybe the device isn't being closed correctly (another data point, I haven't seen this issue on Mac OS X)

Or is it possible to use https://en.wikipedia.org/wiki/WWV_(radio_station) instead? Transmits on 2.5, 5, 10, 15, 20 MHz, I can copy at least the 10 MHz station with my HackRF

WWVB is often locally rebroadcast at ~72 MHz by various locations, I received 72.320 MHz: https://soundcloud.com/user-223812058/72320-mhz-fm - Primex Wireless clock systems: https://web.archive.org/web/20120907065211/http://www.primexwireless.com/uploads/files/GPSTime.pdf - well within the range of the HackRF.

Thanks scateu! I'll see what I can do.

@scateu trying to push changes from my fork to here but I'm getting access denied, can you check: ``` kalibrate-hackrf $ git remote -v | grep origin origin [email protected]:scateu/kalibrate-hackrf (push)...

Got it, cheers! Pushed my changes