--- On Wed, 19/5/10, Woodrick, Ed <ewoodr...@ed-com.com> wrote: > Half the bandwidth of D-STAR? What bandwidths do you believe > that each uses? > I thought that they were actually the same at ~6.25 kHz.
D-STAR GMSK is essentially a 12.5 kHz channel spacing system. http://utahvhfs.org/dstar_channel_spacing.html 4-FSK would permit 6.25 kHz channel spacing, twice the channels. http://www.npstc.org/meetings/20080618_NXDN_R%20Grimm.pdf Page 27 shows the FCC designated emission mask requirements for 6.25 kHz channels. 73 Trevor M5AKA
