If you are looking for narrow filters ...
http://www.com-spec.com/narrow.htm
Neil
Mike Perryman wrote:
>
> Very interesting... I have a Motorola Micor 800MHz-75w continous duty PA,
> and a Motorola Nucleus paging PA (supposed) high power.
> I never really thought about what to use them for, just stacked them in the
> shack for a "future" project.
>
> I was actually thinking about 900-ATV (FM of course)... I also have a small
> "Mitsi" brick that I managed to get going, good for about 20 watts before it
> saturates.
>
> What would be entailed in converting a 800MHz Maxtrac to narrow-band FM(I
> don't have the model number handy right now)... is it worth the effort?
> Will the Maxtrac even do 2.5 kHz? One of those things I just haven't had
> time to investigate.
>
> TIA...
> 73's
> Mike Perryman
> www.k5jmp.us
>
> -----Original Message-----
> From: skipp025 [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, October 27, 2004 1:23 PM
> To: [email protected]
> Subject: [Repeater-Builder] Re: Radios for 900 mhz
>
> > Doug Bade <[EMAIL PROTECTED]> wrote:
> > No Amateur manufactured radio's, however at least
> > 12-15 models of 900 and some 800 commercial can
> > be readily moved..
>
> Motorola (Micor, MSF, GTX, Purc & Darcom), EF Johnson
> (Avenger & 900 Mhz version of the 8615 Series), GE MVP,
> Repco (boards), Neutec (Ranger Series), MDS datapoint,
> RCA (yes, they made an 800 radio, which was pretty easy
> to convert) and a few others.
>
> > There are currently about 100 repeaters on 902/927
> > pairings in the US, most of which are less than 3
> > years old..
>
> Actually, I'll bet there are a lot more 900 machines
> around, just not posted. Some 900Mhz repeater people
> don't post repeater locations to the public forums
> because of problematic "ah" hams known to frequent the
> more popular web repeater/radio groups. Some locations
> are agile with our wonderful utility companies using
> analog and spread spectrum meter reading devices. We
> have to move them around to find a clean receiver slot.
>
> > there is a significant effort to modify and build,
> > and plenty of parts available. It is definitely an
> > interesting band.
>
> Early 900Mhz repeaters were on the air in the late
> 80's. We found the mobiles picket fence a lot more
> than 445 operation. Similar to 1290 actually...
>
> > For those interested in 900 activity in this
> > repeater/user category, one of the larger homes
> > for data and users is [EMAIL PROTECTED]
> >
> > Most of the 900 repeater operators in the country
> > lurk there, as well as most of the folks who
> > have developed various mods, and lots of data
> > archived in the what can and what cannot be done...
> > Most Moto 900 commercial gear has some if not good
> > to excellent potential in 902-928,
> > with the proper mods...
>
> Good information...
>
> > There are only a few GE 900 commercial products
> > that adapt well...
>
> The GE MVP 800 plays pretty well on 900 with reduced
> power. Many of the 90 vintage sf bay area repeaters
> were made with converted mvp radios. It was actually
> pretty cheap to get on 900 with converted radios.
>
> > YMMV..
> > Doug
> > KB8GVQ
> >
>
> Cheers Doug
>
> 73's
> skipp
>
> www.radiowrench.com/sonic
>
> Yahoo! Groups Links
>
>
> Yahoo! Groups Links
>
>
>
>
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