ALMR sets of channel assignments?

[jak122]

Hello, I love this site, so much information and interesting topics.

I have a question which has bothered me for a while about the sets of channel assignments for the ALMR system.
On the ALMR page, under Misc System Information, it shows a table with 6 sets of the 8 channels assignments.
Does anyone know what the other two are? It mentions them, but I don't see where they are.

Thank you

P.S. I live in Juneau Alaska and own two Pro-197s and a Pro-2096 along with many other scanners and radios. This is my first post and I do have some local frequencies and frequency corrections I'd like to contribute.

[booyah]

Hello there--I live in Anchorage and just getting into the digital scene myself! Im wanting to know if Anchorage has any digital systems and what are they? I thought maybe you could help me out

[kikito]

Originally Posted by jak122

Hello, I love this site, so much information and interesting topics.

I have a question which has bothered me for a while about the sets of channel assignments for the ALMR system.
On the ALMR page, under Misc System Information, it shows a table with 6 sets of the 8 channels assignments.
Does anyone know what the other two are? It mentions them, but I don't see where they are.

The other 2 sets are for the 700 and 800MHz segments of the system. At the time the info came out, those were not used yet. Now as you can see on the database here on this website, they now have several sites using those frequency ranges.

[jak122]

Thanks Kikito, actually that was my next question.

After looking at the site information screen in Pro96, the free software, I saw there were two more channel IDs with a base frequency of 136mhz.

So, based on: Ch lo = Channel Identifier * 4096
Ch hi = Ch lo + 4095
Offset = Ch lo
Base = Shown Value for Channel Identifier
Spacing = Shown Value for Channel Identifier

I get ID channel #3 with a CH Lo 12288, CH Hi 16383, Offset 12288
I get ID channel #4 with a CH Lo 16384, CH Hi 20479, Offset 16384

Right?

And booyah, there's tons of digital going on in Anchorage.

Check it out: Alaska Land Mobile Radio (ALMR) Trunking System, Statewide, Alaska - Scanner Frequencies

[kikito]

Yep, sounds about right. Different sites will potentially use slightly different sets of values on the Tables depending on the frequencies used on that particular site.

With the newer GRE and Uniden scanners you don't have to worry about setting up any of that. The radios now work like they're supposed to and grab the correct values from the control channel stream....