I am trying to manually enter transponders for channels and was wondering what the minimum spacing for transponders are. I am working with low SR channels on 99w trying to find all of them. I entered one at 3910 and got a channel but come to find out I already had the channel at 3916. I found 2 channels on the same bird with SR of 3932 and 3936 and they are different channels. Does the transponder spacing change with symbol rates?