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Akib Sayyed akibsayyed at gmail.comI think problem is not with clock Cause i tuned to tx freq i see no signal But when i comment ramp code from osmobts i do get signal. On Fri, 4 Jun 2021, 8:14 pm Andrew Back, <andrew at carrierdetect.com> wrote: > 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-mini/ > > 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 > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20210604/9ee49a9c/attachment.htm>