Are the CDM's similar to the Radius M1225?
--- In [email protected], James Adkins <adkins.ja...@...> wrote:
>
> I disagree on the price of the CDM's. You can get the CDM-750 (4-channel)
> for as low as $75 to $125 if you watch for them on e-bay. The CDM-1250 and
> CDM-1550 are more expensive used, but still you should be able to get them
> for $250 or less if you just have to have the 128 channels and alpha
> display.
>
> On our setup, I program the RX CDM for PL on receive, but leave it in
> monitor mode. I then feed the PL detect from the RX radio to the PL encode
> of the TX CDM. When it gets back to the site, if the radio receives a PL,
> then it sends the logic out the PL detect pin. If it doesn't, then no logic
> is sent. This way you can turn the PL tone at all your remote sites locally
> with your controller.
>
> On Thu, Jul 29, 2010 at 3:35 PM, Glenn (Butch) Kanvick <hotl...@...>wrote:
>
> >
> >
> > Hello Tim.
> >
> > I just looked in my storage site and I found a Micor Base/Repeater which is
> > on the band split of 402-430 MHz. I do not have channel elements for it.
> > I know it was working when it came out of service a few years ago, and the
> > PA can be used as a digital station, as it takes the four pin channel
> > elements. It is the complete base repeater which is designed for continious
> > duty as it has the large pa heatsinks.
> >
> > Let me know if you would like pictures of it.
> > I have $200.00 into it and it weighs alot so I am sure shipping via ground
> > would be around $50.00.
> >
> > If you need the cabinet and power supply it would be $400.00 plus actual
> > shipping.
> >
> >
> > Butch, KE7FEL/r
> > On Thu, Jul 29, 2010 at 1:33 PM, Tim - WD6AWP <tisaw...@...> wrote:
> >
> >>
> >>
> >> Those CDM radios are a bit pricy at $550 each. But I appreciate the
> >> suggestion. And you've given me some ideas.
> >>
> >> I still like the idea of building an out of band repeater for the remote
> >> receive site from a Micor chassis. I would need a 406-420 exciter, bandpass
> >> filter and trippler. If anybody on the list has those or can help me find
> >> them I'd really appreciate it.
> >>
> >> --- In
> >> [email protected]<Repeater-Builder%40yahoogroups.com>,
> >> James Adkins <adkins.james@> wrote:
> >> >
> >> > I am using the Motorola CDM series of radios for 420-425 MHz links from
> >> > voting sites. They make a low-split UHF split that covers 403-470 MHz
> >> out
> >> > of the box, no mods needed. On the transmit sites, you will want to use
> >> a
> >> > fan for cooling. We mount the RX radio and a UHF TX radio on a 1U rack
> >> > shelf, use a 4" hole saw and drill a hole under the UHF TX radio, and
> >> > purchase a nice Dayton 24vdc fan that is actually a ball bearing fan
> >> that
> >> > you can count on for years of use, and let it go. Have not had any
> >> problems
> >> > to date with these rigs over a 4 year span.
> >> >
> >> > at W6KGBs article on moving 450-470 Mastr IIs
> >> >
> >> > > to 420-450. It's on the GE Mastr II page at repeater-builder.
> >> > >
> >> > > You could use a Mastr II UHF mobile with the receiver,
> >> > > exciter and IPA converted to 420, then use the receiver
> >> > > in an aux receiver chassis at the voter site.
> >> > > You wouldn't need to convert the PA, the IPA (driver)
> >> > > and a beam would be enough for a point-to-point link.
> >> > >
> >> > > Bob Meister WA1MIK did an article on converting the
> >> > > multiplier chains so that the UHF Micor receivers could
> >> > > hear down as low as 435 MHz (where the front ends
> >> > > run out of tuning range).
> >> > >
> >> > > Mike WA6ILQ
> >> > >
> >> > > At 05:10 PM 07/27/10, you wrote:
> >> > > >Thanks Jeff, I'll keep looking around for those low split UHF Micor
> >> > > >receivers. What about the transmit side?
> >> > > >
> >> > > >Maybe I should look for a unified chassis low split UHF repeater.
> >> > > >Swap out the UHF receiver for a VHF high band receiver and use that
> >> > > >for my remote receiver site. Then use the low split UHF receiver on
> >> > > >the other end of the link.
> >> > > >
> >> > > >That make sense?
> >> > > >
> >> > > >--- In
> >> > > >[email protected]<Repeater-Builder%40yahoogroups.com>
> >> <Repeater-Builder%40yahoogroups.com>,
> >>
> >> > > "Jeff DePolo" <jd0@> wrote:
> >> > > > >
> >> > > > > > When you say low split, are you talking about the Motorola
> >> > > > > > TRE1201/TRE8031 406-420 Mhz receivers?
> >> > > > >
> >> > > > > I don't have a manual in front of me, but yes, 406-420 receivers,
> >> > > they'll
> >> > > > > work fine well into the mid 430's without mods.
> >> > > > >
> >> > > > > > What Canadian sources might have these?
> >> > > > >
> >> > > > > Well, Spantek comes to mind as a dealer. CW Wolfe used to get a
> >> lot of
> >> > > > > stuff out of Canada, but I haven't talked to Bud in quite a few
> >> years,
> >> > > not
> >> > > > > sure if he's still in business. This list is probably the best
> >> > > resource.
> >> > > > > eBay as an alternative. If you get desperate I still have a few
> >> dozen
> >> > > > > low-split Micors in the warehouse, but really don't have the time
> >> (or
> >> > > > > patience) to deal with packing and shipping radios for what few
> >> dollars
> >> > > I'd
> >> > > > > get out of them (i.e. value of my time > $value of radio). But if
> >> you
> >> > > just
> >> > > > > wanted a receiver, you can consider me a last resort if you strike
> >> out
> >> > > > > everywhere else...
> >> > > > >
> >> > > > > --- Jeff WN3A
> >> > > > >
> >> > > > >
> >> > > > > >
> >> > > > > > --- In
> >> > > > > > [email protected]<Repeater-Builder%40yahoogroups.com>
> >> <Repeater-Builder%40yahoogroups.com>
> >> > > > > > <mailto:Repeater-Builder%40yahoogroups.com<Repeater-Builder%2540yahoogroups.com>
> >> <Repeater-Builder%2540yahoogroups.com>>
> >>
> >> > > , "Jeff DePolo"
> >> > > > > > <jd0@> wrote:
> >> > > > > > >
> >> > > > > > > > What is a good radio for building a one way 420 link? The
> >> > > > > > > > link will be for a remote receiver and will not need to be
> >> > > > > > > > duplex... RX at the voter and TX at the remote receiver. The
> >> > > > > > > > link RX has to live on a noisy hill. Thanks for your advice.
> >> > > > > > >
> >> > > > > > > My preferences, in no particular order, would be
> >> > > > > > Micor/SpectraTAC (low
> >> > > > > > > split), Mastr II ("77" split), and Delta-S (low-split).
> >> > > > > > MVP/Exec II (again,
> >> > > > > > > "77" split) would be fine too. All have excellent front
> >> > > > > > ends. They can be
> >> > > > > > > found if you look a bit, especially check Canadian sources;
> >> > > > > > they're not as
> >> > > > > > > easy to find stateside as 450-470 radios, but they're not
> >> > > > > > unobtainium
> >> > > > > > > either.
> >> > > > > > >
> >> > > > > > > --- Jeff WN3A
> >> > > > > > >
> >> > > > > >
> >> > > > > >
> >> > > > > >
> >> > > > > >
> >> > > > > >
> >> > > > >
> >> > > >
> >> > > >
> >> > > >
> >> > > >
> >> > > >------------------------------------
> >> > > >
> >> > > >
> >> > > >
> >> > > >Yahoo! Groups Links
> >> > > >
> >> > > >
> >> > > >
> >> > >
> >> > >
> >> >
> >> >
> >> >
> >> > --
> >> > James Adkins, KB0NHX
> >> > Vice-President -- Nixa Amateur Radio Club, Inc. (KC0LUN)
> >> > www.nixahams.net
> >> >
> >> > Southern Missouri Assistant Frequency Coordinator - Missouri Repeater
> >> > Council
> >> > www.missourirepeater.org
> >> >
> >> > The Nixa Amateur Radio Club - "There is no charge for awesomeness!"
> >> (Well,
> >> > only $1.00 per month)
> >> >
> >>
> >>
> >
> >
>
>
>
> --
> James Adkins, KB0NHX
> Vice-President -- Nixa Amateur Radio Club, Inc. (KC0LUN)
> www.nixahams.net
>
> Southern Missouri Assistant Frequency Coordinator - Missouri Repeater
> Council
> www.missourirepeater.org
>
> The Nixa Amateur Radio Club - "There is no charge for awesomeness!" (Well,
> only $1.00 per month)
>
