SDRplay Community Forum

Hi, My methodology was similar to yours with one exception - it had not occurred to me that the correct method of calibration would be to place the reference frequency directly on top of the LO - I've always tried to AVOID the central 'spike' when calibrating, or indeed tuning in general, so I was c...

Hi T_S, My original testing was done using WWV . I've repeated the tests using a GPSDO ( Leo Bodnar unit ) : test frequency 12.250 MHz : Sample Rate 4 MHz Decimation 16 ( Final SR 250000 ) : + 19.650 ppm Sample Rate 2 MHz Decimation 8 ( Final SR 250000 ) : - 0.090 ppm Sample Rate 8 MHz Decimation 32...

Newbie SDRplay and SDRuno user here - although I do have a fair amount of SDR experience with dongles, Airspy, SDR-IQ etc. A question with preamble ... When using SDRuno CAL function to calibrate the TCXO to a reference frequency, it seems that there are large discrepancies depending on what sample ...