[Hackrf-dev] PPM Adjustment

[Simon Brown]

Hi,



Seems that I just need to add a PPM correction, some radios support this via
registry settings etc. but with the hackRF I’ll do it in the code. No big
problem, far worse code to write over the next few weeks L .



If only other SDR hardware teams had such simple, good and stable APIs.



Now for HackRF Two with the Analog Devices AD9361 please.



Simon Brown G4ELI
http://v2.sdr-radio.com



From: scateu [mailto:scateu at gmail.com]
Sent: 18 August 2014 02:27
To: Jay Bougie
Cc: Simon Brown; hackrf-dev at greatscottgadgets.com
Subject: Re: [Hackrf-dev] PPM Adjustment



Hi,



https://github.com/scateu/Kalibrate-HackRF



I tried to make it work on HackRF, it may help.





scateu



在 2014年8月17日，下午9:35，Jay Bougie <jaybougie at gmail.com> 写道：





You may want to check out this older thread:
http://nine.pairlist.net/pipermail/hackrf-dev/2013-August/000203.html

Kalibrate is mentioned,  but  it is pointed out the offset isn't consistent
like rtl-sdr,  so a single ppm value like rtl-sdr cannot be used. (I am not
sure if this is still the case.)

Providing an IF adjusts in UI is also mentioned. (But I don't recall how
that factored in.) Since you work closely on the UI side you may be able to
provide that,  if it is still the current right answer.

With the IF adjustment method it leaves me wondering if an external
reference was provided,  would the HackRF still have the issue...... But I'm
wondering these things based on months old threads. I haven't tracked
updates to github to see what may have been since addressed.

Jay

Hi,



Is there any way to calibrate the hackRF to get the frequency spot-on?
Register changes maybe? Users are complaining…



Simon Brown G4ELI
http://v2.sdr-radio.com <http://v2.sdr-radio.com/>




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