Help with Cache Creek License

[b52hbuff]

Take a look at this license:
http://www.radioreference.com/modules.php?name=RR&action=fcc&cs=WPVU237

What is your guess as to the trunk system type? My first concern is that there don't appear to be any 'base' frequencies...

 

[Kirk]

My guess is that it's just two repeaters, no trunking.

 

[n4voxgill]

Look at the power limitation of 2 watts. This means that you have to be almost on top of it to hear anything. If antennas happen to be inside the building, then you may have to be in the parking lot to hear it.

 

[digitaljim6]

The "base" stations in this case are designated "FX1", meaning fixed control stations that talk through repeaters (FB2 mobile relays in this case).

Here's an excerpt from FCC Form 601 instructions with most of the common station types:

Base........................................................................................................................FB
Mobile Relay ...........................................................................................................FB2
Community Repeater .............................................................................................FB4
Private Carrier (Profit) ............................................................................................FB6
Private Carrier (Nonprofit) .......................................................................................FB7
Centralized Trunked Relay......................................................................................FB8
Control ...................................................................................................................FX1*
Mobile ....................................................................................................................MO
Mobile/Vehicular Repeater......................................................................................MO3
Private Carrier Mobile Operation (Profit) .................................................................MO6
Private Carrier Mobile Operation (Non-profit)..........................................................MO7
Centralized Trunked Mobile ....................................................................................MO8
Operational Fixed....................................................................................................FXO
Fixed Relay .............................................................................................................FX2
Fixed .......................................................................................................................FX**
Radiolocation Land .................................................................................................LR
Radiolocation Weather Radar .................................................................................WDX
Radiolocation Mobile...............................................................................................MR
Secondary Fixed Signaling .....................................................................................FX3


* Station associated with a mobile relay that employs the same frequency as the associated mobile station for control purposes.

**Station operating on frequencies available for fixed use for control purposes in accordance with applicable rules.

 

[b52hbuff]

Look at the power limitation of 2 watts. This means that you have to be almost on top of it to hear anything. If antennas happen to be inside the building, then you may have to be in the parking lot to hear it.

I'll happen to be in the building or the parking lot.

So has anyone seen a licensed repeater with such a low power output?

 

[digitaljim6]

Systems like these are common - a very popular arrangement for localized use, like casinos, smaller shopping malls, factory floors, etc.

Use of low power and 12.5 KHz "splinter" channels make getting frequencies in congested areas much easier.

Such frequencies are also used for duplex links between control point and a base station. For example, 2 watts on 463.6375/468.6375 between the office and a 150.920 simplex base station on a mountaintop to talk to trow trucks.

Many public-safety agencies use 2-watt splinter frequencies for remote voting receiver links.

 

[digitaljim6]

Oh, include tow trucks along with the trow trucks.

There are also many jail and courthouse systems that use this type of 2-watt repeater arrangement.