National 800 Mhz Freqs

[tmsanders]

I have seen the "National" 800 mhz frequencies listed on several web sites. I have programmed them into my scanner and have only heard traffic once (today). Can anyone give me some insight into what these frequencies are used for and who uses them? The frequencies I am referring to are:
866.0125 National Calling
866.5125 National Tac 1
867.0125 National Tac 2
867.5125 National Tac 3
868.0125 National Tac 4

Are these used in the same manner as the VHF frequencies
155.370 Point to Point
155.475 ILEEN (This is Indianas name for the freq. other states use other acronymes)

 

[Voyager]

I have seen the "National" 800 mhz frequencies listed on several web sites. I have programmed them into my scanner and have only heard traffic once (today). Can anyone give me some insight into what these frequencies are used for and who uses them? The frequencies I am referring to are:
866.0125 National Calling
866.5125 National Tac 1
867.0125 National Tac 2
867.5125 National Tac 3
868.0125 National Tac 4

In my area, they are used as talkaround frequencies for the TRS. Mostly chat/BS and similar stuff they don't want on the TRS.

They are SUPPOSED to be used for interagency communications when those agencies are on different TRSs.

But, this is the same county that used 155.475 MHz as a dispatch channel before moving to the TRS (to give you some idea of their mentality).

Joe M.

 

[SAR923]

This is yet another attempt to have some "national" mutual aid frequencies but this time for 800 trunk system users to be able to talk to each other on simplex 800 frequencies. Just as the Indiana VHF mutual aid frequencies are different than California's, the 800 mutual aid frequencies are different here than the "national" frequencies. The problem is that most of these "national" frequencies are already in use by trunk systems out here. If you listen to 866.0125, you'll hear CalTrans, for example. Unless the FCC enforces a system of assigning freqencies that can only be used for mutual aid, there will never be any real "national" frequencies. Maybe rebanding will give them an opening to do this but I'm not holding my breath.

 

[eyes00only]

This is yet another attempt to have some "national" mutual aid frequencies but this time for 800 trunk system users to be able to talk to each other on simplex 800 frequencies. Just as the Indiana VHF mutual aid frequencies are different than California's, the 800 mutual aid frequencies are different here than the "national" frequencies. The problem is that most of these "national" frequencies are already in use by trunk systems out here. If you listen to 866.0125, you'll hear CalTrans, for example. Unless the FCC enforces a system of assigning freqencies that can only be used for mutual aid, there will never be any real "national" frequencies. Maybe rebanding will give them an opening to do this but I'm not holding my breath.

ODD, I have never seen any of the EXACT I-Tac freqs. used in a trunked system! Here in Colorado they are used for various uses; fire tac, narcs, etc. I think the basis for them is that most agencies (even the little guys) can have them in their HT's & vehicles, so if needed, multi agencies could communicate without the use of "patches".

Jerry

 

[Joseph11]

I have seen the "National" 800 mhz frequencies listed on several web sites. I have programmed them into my scanner and have only heard traffic once (today). Can anyone give me some insight into what these frequencies are used for and who uses them?

That's odd, I heard usage on them for the first time today also. What channel did you hear used?

 

[tmsanders]

I have seen the "National" 800 mhz frequencies listed on several web sites. I have programmed them into my scanner and have only heard traffic once (today). Can anyone give me some insight into what these frequencies are used for and who uses them?

That's odd, I heard usage on them for the first time today also. What channel did you hear used?

I heard some brief traffic on 866.5125. I am in S.W. Indiana about miles north of Evansville. I'm not sure who I heard or what the traffic was about. It was very brief. I'm not as bumfuzzled :roll: as I was, but I still am interested in how these freqs will be used locally. Thanks to all for the input.

 

[Joseph11]

I heard some brief traffic on 866.5125. I am in S.W. Indiana about miles north of Evansville. I'm not sure who I heard or what the traffic was about. It was very brief. I'm not as bumfuzzled :roll: as I was, but I still am interested in how these freqs will be used locally. Thanks to all for the input.

I heard some usage on 867.5125 MHz with a PL tone of 156.7 Hz. They really aren't local frequencies, but mutual aid/Inter-Op frequencies. You really shouldn't hear that much regular usage on them. All of them, except 866.0125 MHz, should be used with a PL tone of 156.7 Hz. 866.0125 MHz should be used in CSQ mode.

 

[SAR923]

ODD, I have never seen any of the EXACT I-Tac freqs. used in a trunked system! Here in Colorado they are used for various uses; fire tac, narcs, etc. I think the basis for them is that most agencies (even the little guys) can have them in their HT's & vehicles, so if needed, multi agencies could communicate without the use of "patches".

Jerry

Jerry,

You are correct and I'm wrong. My eyes were crossing when I was reading my frequenciy lists. California is indeed licenced on all of these national frequencies, with a repeater output of 866.0125. Of course, California has it's own set of five 800 mutual aid frequencies that are actually used. I've never heard anything on the national frequencies here. But, I guess we could talk to you in Colorado if we had to.

 

[AZScanner]

These freq's are used out here for interop between agencies, and unlike all the fancy shmancy digital radio systems going up around here, are actually accessible by all agencies in the area at a reasonable cost. :idea:

But We The People voted to spend the 90+ million on the DTRS so here we are. 8)

-AZ

 

[N_Jay]

1) They are defined NATIONALLY.

2) The use is defined by regional plans, but I think all the plans are about the same with regard to these channels.

3) You must monitor the Calling channel if you implement a NPSPAC system.

3) The Calling Channel is never repaeated (Duplex base operation)

4) The 4 TAC Channels are on repeaters, but the repeaters arte suposed to be disabled untill set up for use when requested.

5) Many regional plans also have established more tradional Mutual-Aid channels in teh NPSPAC band.

6) Regional NPSPAC Mutual-aid channels are under the conrol of the regional NPSPAC committee, and can be different with different rules region to region.