> Spectrum analyzer display showing the 1.143 kHz occupied bandwidth Should be 1125 hz. (75hz sapacing * 15)
Each carrier is 50 baud, RRC filtered (0.5 rolloff) -> 75hz BW. Can you measure the crest factor in function of ALC button ? > Audio http://home.roadrunner.com/~mdmiller7/images/dv/fdmdv/ audio.mp3 you need a better mic .. or setup. My own audio sounds quite similar, but i have heard some stations with excellent audio on this codec. I think we should move the mic further away and use a pop and hiss filter, or move the mic sideways. Would be intresting to have original and coded audio to compare. 73, Cesco
