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FCC frequency assignments/LTR trunking

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#1
Here are two systems and two different companies ( From RR Database for Montgomery, Alabama)

ALLCOMM WIRELESS

010 Montgomery 01 461.73750 02 463.91250 03 464.61250 04 N/A

004 Montgomery 01 461.73750 02 462.01250 03 463.31250 04 463.56250 05 463.86250

and Yet they share a frequency , How is this possible.Also as in listening to any trunked system.. if you can't pick up a control frequency. A) They are no longer in operation B) & you can't monitor the system correct?
 

BaLa

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#2
Looks like they're the same company.

Also LTR does not use a CC.
I suppose it would be possible in an LTR System to share 1 or 2 frequencies if they're not very active, but it seems like it would cause problems, if there is a lot of activity on either systems.
 
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#3
I will probably program e, both & see what I can hear. The 2nd 1 is Darden Communications. I missed that part when trying to copy & paste it
 

Airdorn

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#4
Beware...

I've been mapping some local LTR systems to me, and one of the very first things I noticed is that the RR database, at least for the several LTR systems around me, are pretty out of date. I don't think they can help it really... LTR systems are mainly for businesses and so I think the systems are a lot more choatic than public safety.

Your example above looks like the same company running a couple of different systems. I'd guess that they're very careful that each system uses channel assignments the other doesn't.
 
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#5
they are TWo different companies, Allcomm wireless & the second is Darden Communications, or are least as two different Companies
 
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Airdorn

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#6
OK.

Yeah, around here there's a few freqs. that are shared by a couple of different companies. One is in Northern MS, the other is in Memphis, TN. I think that's where the 'area code' portion of the talkgroups comes in. Keeps them separate and able to share the same freqs.
 
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