Originally, repeaters were only legal on 146 MHz, I think. I know techs didn't have access to the ones on 147 MHz at first.
Joe M. > Paul Plack wrote: > > Jim, > > I'd be interested to know where in part 97 you find any restriction on > FM below 29.5. (Without debating it, of course.) ARRL bandplan, yes, > but FCC rules? > > Keith, we're also stuck with band-planning on other bands which didn't > anticipate the popularity of FM repeaters. 2m is even more screwed up. > Why have only 600 kHz offset, when it could have easily been double > that? Duplexers would have been smaller, less expensive, worked > better, etc. > > The answer is nobody had figured out in the early 1960s that FM > repeaters would grow to be the dominant mode on the band. Originally, > repeaters used 30 kHz channel spacing with inputs between 146.0 and > 146.4, then a 200 kHz buffer zone for simplex, and outputs between > 146.6 and 147.0. When additional repeater subbands were added, it > would have made sense to go to a 1 MHz split, but at the time too many > repeater ops would have bitched about buying crystals and retuning > duplexers. > > 73, > Paul, AE4KR > > > ----- Original Message ----- > From: wd8chl > To: Repeater-Builder@yahoogroups.com > Sent: Tuesday, December 25, 2007 10:09 AM > Subject: Re: [Repeater-Builder] Re: 10 meter desense help, > split site, high noise floor. > > kb1we6r wrote: > > > Why oh why did they pick 100KHz??? The 10m band is HUGE > with no > > activity (even when the band is open, there should be > plenty of room > > for a better repeater plan). > > .... Keith, WE6R in Monterey CA > > Nope-FM is only allowed above 29.500, so we only have > 29.5-29.7 for ANY > FM activity. > > Jim > >
