Mark Thompson wrote: > ------------------------------------------------------------ > > > May 7 2008 Ken D. Chafin 3624 Foothill Road #1 La Crescenta, CA > 91214 > > Leon J. Brown 1627 Fair Park Avenue Los Angeles, CA 90014 > > Re: Petition for Rule Making filed October 10, 2007 <snip for brevity> > > The Petition argues that additional spectrum is needed for repeater > stations because some amateur repeater stations have begun using > certain digital communication protocols, and digital voice operation > is incompatible with existing analog operations [because d]igital > voice users are unable to determine if the desired frequency is in > use by analog users and can inadvertently cause harmful interference > to those users.
Good. D-Star and other digital voice modes do NOT need more spectrum on 2M. If a digital voice mode does not have some sort of provision for monitoring for non-digital activity, or preventing transmission if there is any, it needs to be redesigned, as it can easily be considered illegal. P25 has it. Jim WD8CHL
