800 MHZ simulcast system

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abelanger
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Joined: Fri Feb 01, 2008 1:02 pm

800 MHZ simulcast system

Post by abelanger »

I am putting in a 7 channel simulcast system. Prime and one remote site. This is being done without Motorola engineering. Anyone got a pinout diagram of all the connections points to bring all together. Using channel bank and microwave.
tvsjr
Posts: 4118
Joined: Fri Nov 28, 2003 9:46 am

Re: 800 MHZ simulcast system

Post by tvsjr »

It's like a RICK, just bigger with extra cables. Tie 'em all together, it should work.

(If you haven't figured it out, a two-line post asking how to completely implement a trunking system leaves most of us wondering if you are a troll, or if you actually expect an answer. You can't actually expect someone to tell you soup-to-nuts how to configure a system, right?)
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xmo
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Re: 800 MHZ simulcast system

Post by xmo »

He could try staying at a Holiday Inn Express....
Jim202
Posts: 3610
Joined: Sun Sep 09, 2001 4:00 pm

Re: 800 MHZ simulcast system

Post by Jim202 »

You have got to be kidding. I have to agree that a 2 line request with what you have said
is not going to hack it.

What are your plans to keep the radios on frequency?

What are your plans to account for TX audio delay?

What are you doing about the microwave audio levels?

What are you doing about RX voting?

And the many more issues that come with simulcasting a trunking system.

Not that I am trying to say it can't be done, but without some serious engineering, it
won't play the way your wishing it will.

Jim
bernie
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Re: 800 MHZ simulcast system

Post by bernie »

My two bits worth:
Some one observed that there is nothing so simple as someone else's job that you know nothing about.

Working for Motorola, I have constructed and optimized such systems in the past.
If you have lots of channels to play with you might consider building an AMSS system.
Much simpler than simulcast.
Best chance is to buy an obsolete used system, which would have all the various extra modules required.
Programming the central controllers is another issue.

In any case I would suggest that you find an old EX-MO that has experience with such systems, buy him or her several beers,
and find out at least the index of problems and issues that you face.
Aloha, Bernie
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nmfire10
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Re: 800 MHZ simulcast system

Post by nmfire10 »

abelanger wrote:I am putting in a 7 channel simulcast system. Prime and one remote site. This is being done without Motorola engineering. Anyone got a pinout diagram of all the connections points to bring all together. Using channel bank and microwave.
You're going to need a high-speed framicator for this to work properly. A properly affiliated framistat is also required.
"I'll eat you like a plate of bacon and eggs in the morning. "
- Some loser on rr.com

eBay at it's finest:
Me: "What exactly is a 900Mhz UHF CB?"
Them: "A very nice CB at 900Mhz speed!"

:-?
tvsjr
Posts: 4118
Joined: Fri Nov 28, 2003 9:46 am

Re: 800 MHZ simulcast system

Post by tvsjr »

1 post. New user. Useless question. Why do we keep bumping this troll's thread?
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