4 Jun
2021
4 Jun
'21
4:38 p.m.
On 04/06/2021 15:02, Joachim Steiger wrote:
hi
limesdr mini does not have a onboard-clock which is good (precise)
enough for gsm requirements.
there is no input which can easily be used with an external source like
a gpsdo.
thus there is no realistic way to reliably do gsm with the -mini, sorry.
External clock can be enabled with LimeSDR Mini, but requires moving
(soldering) a 0R link and then you always have to use external clock.
Daniel Estevez put together a nice write-up:
https://destevez.net/2019/11/using-an-external-reference-with-the-limesdr-m…
Supreeth Herle has also created an LMS API port of Kalibrate, that can
be used to calculate and update VCTCXO DAC value in EEPROM:
https://github.com/myriadrf/kalibrate-lms
This is obviously not as good as having a GPSDO or similar, but may help.
Andrew