Quantar voting system setup

[emanuel32804]

Hi guys,

I have had my quantar up and running for some time now doing P25, and I'd like to expand its range by adding some receivers and a comparator to do voting. Of course, I don't intend to get leased lines between everything so I've been doing some reading and I want to make sure I have this all right before I purchase anything. Below is my projected setup:

Quantar T5367A RX DB25 v.24 port ---> Cisco HWIC-2T ---> Cisco 2901 ISR ---> IP Tunnel to main site ---> Reverse with an ISR and HWIC with modular adapter to convert DB25 to RJ45 ---> Comparator ---> Existing quantar repeater for TX

Presumably there will be a couple sites for RX only and they will all have a T5367A and Cisco unit there. The ISR at the main site would just have more ports to support as many remote sites as necessary.

I've also been wondering if I need the v.24 daughter board if I intend to use the DB25 on the back. I know that all the quantars would need the wireline card. I'm also assuming that the comparator and the existing quantar can just be connected directly with an RJ45 since they are at the same site, and so at the very least it would need the daughter board.

The other little point of uncertainty is the difference between Astro-Tac 3000 and 9600. I know this is the baud rate of the Astro communications, but does it make a difference for a conventional system?

Last question is regarding the possibility to use this system to also transport serial back to the main site from each remote site in order to remotely program the units via RSS. Each remote site would have the HWIC-2t, which has 2 ports. Is my understanding correct that these types of ports are the same rs232 that would be used for the main programming port? I know this is a lot of questions, but I'm just getting my feet wet here with these more complex systems.

Thanks,
E

 

[jeepsandradios]

If you are planning P25 all would need to the V.24 card to talk t the comparator.

 

[emanuel32804]

That's too bad. Does that mean I have to use the RJ45 jack on the card, or can I use the DB25 on the back?

 

[celltech25]

That's too bad. Does that mean I have to use the RJ45 jack on the card, or can I use the DB25 on the back?

Rj45

 

[emanuel32804]

Understood. How do I make the connection if my repeaters don't have the cutouts on the front for the two jacks? Is it as simple as cutting two holes?

Also upon further research, it seems pretty much everything about the ATAC 3000 vs the 9600 is identical as far as I can tell aside from one being a bit newer and having shorter delay times. Does anyone know any other difference?

 

[mikewazowski]

Yes, it’s as simple as cutting two holes or you can order the proper front.

 

[emanuel32804]

Ah ok. Do you know what the part number would be for the proper front?

Edit: I found it I think. Motorola 6482113V07

 

[mikewazowski]

Yes, that’s correct. Just pulled one of my station and the only difference is mine is a V03.

 

[emanuel32804]

Those things sure are expensive for a piece of metal with some holes. I'll probably just get the dremel out and make do.

So then if I cannot use the DB25 on the back, I'm curious what its intended use is. Anybody know? The manual calls it "Multi-purpose RS-232". It's even got the same pinout as a v.24.

 

[mikewazowski]

There was a guy selling them cheap on eBay a few years ago so I bought a couple. I was originally thinking Dremel or nibbler but the price was right.

The other option is to pick up a cheap 800MHz station and you'll get an scm front and a spare power supply and backplane.

 

[emanuel32804]

That's a great idea to get some spare parts. It hadn't occurred to me that the backplane is identical between all the units