M17 baseband looks better when 25kHz RF channel width is used. 12.5kHz setting seems to reduce the bandwidth of the signal available at the demodulator output, causing distortion. Eye diagrams are shown below (top: 12.5k setting, bottom: 25k setting):
M17 baseband looks better when 25kHz RF channel width is used. 12.5kHz setting seems to reduce the bandwidth of the signal available at the demodulator output, causing distortion. Eye diagrams are shown below (top: 12.5k setting, bottom: 25k setting):