well to do that correct I believe you will need a master oscillator per site and GPS compensation for path distance changes. that is for the transmitters.
----- Original Message ----- From: "Daron Wilson" <[EMAIL PROTECTED]> To: <Repeater-Builder@yahoogroups.com> Sent: Tuesday, May 03, 2005 7:46 PM Subject: RE: [Repeater-Builder] voting receivers with simulcast transmitters > > > I guess I wasn't clear enough. I'm familiar with the simulcast paging, this > is not paging. This is public safety police analog repeaters. The proposal > is to put three in a row down the town, about 3-4 miles apart, voting > receivers at the two south ones linked back to the 'main' site via UHF > control links and a voting controller there. So, they would vote the best > receiver and simulcast the output of all three repeaters. Not paging, I > know how paging works, I have a VHF pager on a simulcast system. What I'm > looking for is somone who has seen an installation like this or has > experience with it. Personally, I think it will multipath like crazy and > the recovered audio will be crappy. But, if it is a good thing as suggested > in the recommendation, there must be operating systems out there to listen > to. > > Thanks, > > [EMAIL PROTECTED] > > Daron > > -----Original Message----- > From: Repeater-Builder@yahoogroups.com > [mailto:[EMAIL PROTECTED] On Behalf Of Paul Finch > Sent: Tuesday, May 03, 2005 7:07 AM > To: Repeater-Builder@yahoogroups.com > Subject: RE: [Repeater-Builder] voting receivers with simulcast transmitters > > Daron, > > I will tell you what I know about analog simulcast systems. There is > basically two manufactures of this equipment, Motorola and > Quintron/Glenayre. If you want it to be a fairly good sounding system stay > away from Motorola equipment. I worked in paging back when there was still > a lot of analog pagers on the air, half our systems were Motorola, the other > half Quintron. We finally gave up on the Motorola systems running analog, > you could set them one day and they may work OK but the next day they would > not. There is a problem how the built their FSK modulators, they were not > matched like Quintron's. The Quintron modulators were matched to .2 of a dB > between them, Motorola did no matching. > > The trick that will help the most with either system is; try and keep the > overlaps where people will not be using the system. > > There is other problems with Motorola's simulcast system but that is what > kept them from having a good (as possible) running simulcast system. > > There is still a company in Quincy Il. that sells the Quintron (now > Glenayre) line, their company name is ISC Technologies. They have the > manufacturing rights for most of the Quintron/Glenayre line or they may have > some used equipment available. > > Paul > > > -----Original Message----- > From: Repeater-Builder@yahoogroups.com > [mailto:[EMAIL PROTECTED] Behalf Of JOHN MACKEY > Sent: Tuesday, May 03, 2005 2:00 AM > To: Repeater-Builder@yahoogroups.com > Subject: Re: [Repeater-Builder] voting receivers with simulcast > transmitters > > > Daron- > > Most all your 150 MHz or 900 MHz paging systems are going to be simulcast. > If there are any 150 MHz analog paging systems around, try listening to > them. > > ------ Original Message ------ > Received: Tue, 03 May 2005 01:26:06 AM CDT > From: "Daron Wilson" <[EMAIL PROTECTED]> > To: <Repeater-Builder@yahoogroups.com> > Subject: [Repeater-Builder] voting receivers with simulcast transmitters > > > Hello Folks, > > > > I'm looking over a radio study done by consultants for our small coastal > > community. The recommendation includes three simulcast repeaters with > > voting receivers. We live on the coast, the terrain is covered with tall > > trees that make wonderful reflectors and contribute tons of multipath when > > wet, and it rains plenty. I can't think of any place with terrain issues > > where I have seen a simulcast VHF repeater system built out. > > > > If you have any references (for or against) a simulcast system like this, > > please drop me a note. I suspect a fair amount of multipath problems and > > not real great audio for the mobile units based on their location, but I > > wouldn't be able to prove it until the thing got installed. > > > > Ideas? > > > > Thanks, > > > > > > > > Yahoo! Groups Links > > > > > > > --- > [This E-mail scanned for viruses at TNWEB LLC] > > > --- [This E-mail scanned for viruses at TNWEB LLC] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
