"duh-because when repeaters were first authorized for 2M, they were only allowed from 146 to 148. 144.5-145.5 didn't come into existence until the 80's."
Close, but not exactly. When repeaters first came to be used on the ham bands in the late '50s/early '60s the 2m band from 144 to 148 Mc was only available to General class licensees and above. Novice (yes, Novice had some 2m voice privileges at that time) and Technician licensees were only allowed to operate in the 2m band from 145 to 147 Mc. Therefore if a repeater owner wanted to make his repeater available to the widest "audience" he had to keep both input and output within the 145 to 147 range. Interestingly, there was a repeater in the S. F. Bay area (somewhere down the Peninsula, I believe, maybe Stanford) that did have it's input and output on 144 and 147+ with the clearly stated reason that Novices and Techs. were not welcome. Never seemed to bother anyone I knew; that group carried on some pretty "stuffy" conversations anyway and there were enough 145 to 147 machines to go around including at least one AM repeater. However the only repeater at the time (that I know of) using 600Kc separation was the WB6AAE repeater in the foothills east of Oakland on Grizzly Peak. If they had a role in establishing the later standard, I have no idea Tom DGN --- In Repeater-Builder@yahoogroups.com, wd8chl <wd8...@...> wrote: > > Rev. Robert P. Chrysafis wrote: > > wonder why the fcc does not allow acssb above 30 mhz on the ham bands? > > seems > > to me they would want to promote more efficient modes through all the ham > > bands. > > > > another interesting thing would be to see 2 meter repeaters go to 2 or 3 > > mhz > > splits and employ some form of efficient modulation mode instead of the > > same > > old 10 khz fm. > > > > and i am sure we will be all dead before this happens :) > > > > one can imagine though. > > > > better tx/rx isolation, cleaner signals, employ some form of narrow band > > modulation scheme and we could even ease congestion on 2 meters. > > > > > > i still can't imagine how the 600 khz split was decided for 2 meters when > > there is room for at least a 2 mhz split. > > > > > duh-because when repeaters were first authorized for 2M, they were only > allowed from 146 to 148. 144.5-145.5 didn't come into existence until > the 80's. > > No-2M is too populated to do any changes. Not gonna happen until they > just flat stop making FM gear. Not in my life time, not in your kids > lifetimes, probably not in your grandkids lifetimes either. > > Same with the 150-174 LMR band...WAAAAAY to much gear out there to try > to standardize input/output. > > Look at the bright side-at least the ham band HAS a standard. There is > none in the LMR segment. >
