If I can figure out how to do it right, I have a scan from the ARRL
Handbook form 1961 and also the License Manual from 1961. Both list the
frequency assignments for the various license classes. You will see
that, for Technician Class license, the 2meter assignment was 145 to 147
Mc. NOT 144 to 148 as some have stated. If the attachment, titled
ARRL1961 doesn't show up, would a moderator please explain more clearly
than yahoo, how to send it.
Tom DGN
--- In Repeater-Builder@yahoogroups.com, MCH <m...@...> wrote:
>
> I believe the OP is essentially correct. The "2M sub-band" didn't come
> until much later - I was thinking it was the late 70s, but it could
have
> been the early 80s.
>
> Your point was why the 146 MHz pairs were more popular - because the
> techs could not use the 147 MHz pairs.
>
> The 146 MHz segment was originally 60 kHz channels (146.610, 146.670,
> 146.730, Etc.), then went to 30 kHz in most areas - going to 20 kHz
> channels in some, then the 30 kHz was again broken down into 15 kHz
> channels. The sub-band was always 20 kHz until some areas changed
that, too.
>
> Check out some of the older RDs for more info. Some of the early 70s
> ones even listed the Input/Output modulation, such as 5/5 or 15/5 or
> 15/15 (meaning deviation in / deviation out).
>
> Joe M.
>
> wb6dgn wrote:
> >
> > "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 (tha
> t 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 wd8chl@ 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.
> >>
> >
> >
> >
> >
> > ------------------------------------
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
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> >
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> >
>
