Hi Andy, > Is there a standard polarity for I/Q data as it relates to left and > right channels as used in SDRs?
There should not be any standard, an SDR should allow both because the SDR should allow for converters/transverters that invert the frequency scale. One should be able to set the passband direction in software depending on whether an even or an odd number of such converter happens to be inserted between the antenna and the I/Q demodulator. (In Linrad with WSE units, this is automatic.) 73 Leif / SM5BSZ
