I have two such systems near me - both on UHF. Come to think of it, there is one on 800, too. All analog voice simulcast (800 one trunked, but only two sites). It is definitely annoying to hear the heterodynes of all the TXs. Only one of the UHF systems doesn't do that much. I suspect it is the exception that is set up extremely well.
Joe M. Daron Wilson wrote: > > 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 > > > > 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/
