rtl_fm: degraded demodulation caused by self-introduced DC !?
h_ayguen at web.de
Sat Jul 18 10:15:25 UTC 2015
i don't see any option to do IQ calibration in rtl_fm !?
As i wrote to Murat, the DC is NOT the LO !
The spectrum already looks clean. I don't have a problem with the symmetry.
The "dc" option does work too late: after demodulation.
Am 18.07.2015 um 12:03 schrieb Nikolay Dimitrov:
> You need IQ calibration.
> When calibrated, spectrum should look much cleaner, signals should
> appear only on 1 place of the waterfall/spectrum display, and the LO
> carrier (the so-called DC) will be much better suppressed, although not
> completely removed (that's why the -dc option exists for the baseband
More information about the osmocom-sdr