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Anyone keep an ear on the McChord UHF trunked system? I noticed today that the control channel was operating on a new frequency - new to me at least. I found it on 406.3625 MHz. That frequency is the base frequency of the custom table needed to trunk-track the system, but I've never seen it listed as a repeater in the system.

Is this something new or just an oversight?

- Chris

_________________
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Chris Parris
Federal Wavelengths columnist
The Spectrum Monitor Magazine
chrisparris@thefedfiles.com

I'm not doing anything Monday or Tuesday next week; will look into it.

_________________
President-in-Exile, Seattle Area Radio Communications And Scanner Traffic Intercept Crew (SARCASTIC)
Don't feel bad if you can't use your STD100/200; there are still people using Digital Frequency Search!
Bunnery definition for the under-fives

It is on 407.1625 right now which is the lowest chan showing on unitrunker. I have always picked up phantum hits on unitrunker starting up on this system usually showing type I calls, but only on startup. One of these tends to be chan 380.

Correction... 380 is now a VC and may be a CC. It just hit as a VC for me tonite.

Thanks - I actually found the control channel on the new frequency by ear - I was searching the UHF band and noticed that the system ID was for the McChord system, then ran Trunker on it...

- Chris

_________________
--
Chris Parris
Federal Wavelengths columnist
The Spectrum Monitor Magazine
chrisparris@thefedfiles.com

Dude, you got an AWESOME ear.
I can barely copy 13wpm of CW, and you can decode a system ID by EAR! :shock:

Thanks!

Well, I had a little help from the 396D...

- Chris

_________________
--
Chris Parris
Federal Wavelengths columnist
The Spectrum Monitor Magazine
chrisparris@thefedfiles.com

Well, if DSTE is on it, it's as good as solved.

I'm going to beg off and spend my time on that other thing.

_________________
President-in-Exile, Seattle Area Radio Communications And Scanner Traffic Intercept Crew (SARCASTIC)
Don't feel bad if you can't use your STD100/200; there are still people using Digital Frequency Search!
Bunnery definition for the under-fives

Those are definitely new since last spring or so when I last checked.

I've seen systems use 380 as a control channel, but never anyone go below 380 for anything - if the .1625 frequency is real, did they shift the whole system down?

Flash

It didn't appear to me that anything else had changed other than 406.3375 showing as the control channel. The system still tracked using the same voice channels I've logged before.

Here is what I logged on Trunker when it was active:

406.3375,17c,ffff,0
407.1625,1bc,ffff,89f
407.7625,1ec,ffff,aa0
409.5625,27c,ffff,98f
409.7625,28c,ffff,a35
409.9625,29c,ffff,a14
410.3625,2bc,ffff,8bf
410.7625,2dc,ffff,9fb

- Chris

_________________
--
Chris Parris
Federal Wavelengths columnist
The Spectrum Monitor Magazine
chrisparris@thefedfiles.com

I confirm that the only change seems to be the growth of a new VC/CC at 380. The change must have just taken place the day or two before since I just had unitrunker up on it and did not see it.

406.3375 was today's control while I drove by. Added it to the lineup in the PSR and it tracked fine.

_________________
President-in-Exile, Seattle Area Radio Communications And Scanner Traffic Intercept Crew (SARCASTIC)
Don't feel bad if you can't use your STD100/200; there are still people using Digital Frequency Search!
Bunnery definition for the under-fives