The problem occurs in 3.1 Betas from September and November, using LimeSDR
After tx-calibration the calibration-values are shown correctly in the adv. options page, but the DC-Q-value is stored incorrectly. after reload it is reset to 0, which causes miscalibration at every startup. my workaround: write the correct value in the calibration-file manually and NEVER recalibrate in the console.
Calibration-value for dc-q stored incorrectly
Re: Calibration-value for dc-q stored incorrectly
Same problem seems to occcur at RX-DC calibration