[Scan-DC] Interesting graphic of trunking pattern

[Travis]

The A73B system right?

Travis



----- Original Message ----- 
From: "Andrew Clegg" <w4jecom at w4je.com>
To: "Scan DC" <scan-dc at mailman.qth.net>
Sent: Wednesday, February 11, 2009 9:26 PM
Subject: [Scan-DC] Interesting graphic of trunking pattern


> While fooling around with my spectrum analyzer tonight, I took at look at
> the Federal trunking band at 406 - 420 MHz. I noticed that one of the
> prominant trunking systems uses a very basic pattern to assign radio
> channels to active talk groups -- it just runs down the list of authorized
> channels, then when it gets to the bottom, it starts back at the top 
> again.
> I'm not sure how many trunk systems do it this way, but such a clear 
> pattern
> isn't evident in other trunking bands, like 800 MHz. Anyway, I found it
> interesting. I posted a waterfall plot at
> http://www.w4je.com/specweb/trunk.php.
>
> Cheers,
> Andy
>
>
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