At 08:51 AM 01/30/07, you wrote: >wadeds2003 wrote: > > Hello everyone. I am a Icom, Vertex, HYT dealer out of Canada. I am > > looking at putting up a UHF trunking repeater in the 450-470 MHz > > range. I think I am leaning towards a LTR system however I do not > > have very much expirence with trunking repeaters as they are not all > > that common out here. Is LTR a good protcol to use? I am thinking of > > using Icom FR4000 series repeaters with etheir csi or zetron > > controllers, a good high gain antenna, and some good duplexers, multi > > couplers, and combiners. What I am thinking is to start I will go > > with 2 repeaters and add a 3rd if need be. Has anyone had any kind of > > expirence with trunking and does this sound like a good approach or > > should I be looking at something else. Also, what are other dealers > > charging for similar services? Any help is appricated. Thanks > >Who are the intended users? LTR is good for businesses, contractors, >etc, but it does have a slow(er) channel access time then other formats. >If you're looking more towards public safety or 'critical >infrastructure' (basically utilites), you'll want something with a >faster access time. My first recommendation would MPT-1327, next maybe >P-25. P-25 will be much more expensive, but is getting to be more >wide-spread here in N. America.
I remember reading an article several years ago about a problem with LTR... Joe's trucking goes out and buys time on a trunked system and 5 radios, then has one of them cloned into 10 more. Trunked operator now has 15 users and Joe is paying for 5 plus airtime. The article mentioned an extension to LTR called (if I remember correctly) Passport that would prevent this - the ten extra radios wouldn't work. Just mentioning it so you can include it in your research.
