Pic of a 5 Ch DTRS Site

[mikeATtleccdotnet]

I have not seen any pictures of the DTRS Sites/Equipment in this Forum, so, I thought I would post one that I took when I was out at a shared repeater site. It's links to the system via Microwave in the upper right hand corner of the pic.

Mike

Any one guess what site this is?

 

[bezking]

Looks like a /\/\otorola Type 2 system

 

[Blogger]

Dont they use Quantars?

 

[Josh]

I don't know what DTRS is, but those repeaters have a strange resemblance to iDEN repeaters.

Cooling fans on the bottom, the vented/fanned area in the middle left for the power supply, and immediately below it is the exciter. The controller where the serial cables are plugged in, and above it banks of multi-receivers. "Quad Channel Receiver" if you will... but only on iDEN, and are modular and look exactly like the pic.

-Josh

 

[bezking]

I don't know what DTRS is,

Digital Trunked Radio System

 

[Josh]

Ok, whatever... it's Colorado, that would have been helpful to know from the get-go..

Unless you can get closer for some better shots, I'm going to have to say you took photos of an iDEN site. Because if it's moto and digital, and it's not a quantar, then it's probably not APCO-25.

 

[MMIC]

Unless you can get closer for some better shots, I'm going to have to say you took photos of an iDEN site.

I'd like to know where this photograph was taken so that we can verify whether or not it is a DTRS site or not. It would have to either be Auraria or the Capitol. From what I can tell, it looks to be a Nextel site because of the TRAK-9100 that's there. The only sites on an ASTRO-25 network that need GPS standards are simulcast sites, and the only 700 MHz simulcast system on the network has a lot more than 5 channels. Nextel sites need a GPS standard at each site.

Because if it's moto and digital, and it's not a quantar, then it's probably not APCO-25.

Wrong.

Quantars are the most common base station, but the version you see here (used in iDEN) is also available in 700 MHz and 800 MHz for ASTRO-25. The Quantar station is not available in 700 MHz, so you will see the STR-3000 base station for all 700 MHz applications. The STR-3000 is also used in 800 MHz ASTRO-25 (9600 baud control channel systems) for simulcast, not the Quantar. The STR-3000 can also be used in the 800 MHz band for non-simulcast digital operation, but this is not common.

The new GTR-8000 base radio is the replacement for the Quantar and the STR-3000 and will be found in most newer applications, especially in ASTRO-25 release 7.x, but is compatable with earlier releases of ASTRO-25.

 

[Josh]

oooh STR3000, I guess I'll go check that out.

 

[mikeATtleccdotnet]

Hi All,
I hate to make so much confusion, Josh, but it truly is one of the State of Colorado P-25 DTRS (Digital Trunked Radio System) sites here in Colorado. It’s control channel is on 774.*. For Ch1… As a favor to the system operator, I choose not to disclose the actual site location, but it certainly is not a iden site. I do suspect that this system will be simulcast / simul-crash, upoops, that’s EDACS, soon. It’s North of Denver and South of Fort Collins.

Mike

 

[jimmnn]

My vote would be Site 354, nice pictures and thanks.

-Frequencies
#Format: Channel,Usage,Frequency
"01-0634","i",765.96875
"01-1934","av",774.09375
"01-1974","av",774.34375
"01-2014","a",774.59375
"01-2054","c",774.84375


Jim<

 

[mikeATtleccdotnet]

Very good. I wonder how long it will take to decode the number&#8217;s 354... I&#8217;m sure every one else will get it.

BatWing forever-
Mike

 

[Blogger]

mike do you work for this company? http://www.tlecc.net/index.htm

 

[mikeATtleccdotnet]

yep...