San Diego County - North Zone Fleet Map - 2009

[zerg901]

http://www.sdnorthzone.org/Communications/FleetMaps/2009 NORTH ZONE VHF Mobile Fleetmap - Final.pdf

many many fire freqs listed here - all VHF highband

New to me -

BDU2 is narrowband
Natl Parks a/g 168.65
4 common fed freqs
Air Tac 23
Inyo NF - 2 rptr pairs
Riverside County - multi old PD freqs
Tuolumne Cmd input
Amador Command - should be 153.935 ?
BLM - 3 tacs - all narrowband and low power
NEU E Support - wrong input?

Does San Diego County typically have 1 repeater site for each of their command channels? (I just see multi PLs listed for 153.89R)

 

[SCPD]

http://www.sdnorthzone.org/Communications/FleetMaps/2009 NORTH ZONE VHF Mobile Fleetmap - Final.pdf

many many fire freqs listed here - all VHF highband

New to me -

BDU2 is narrowband
Natl Parks a/g 168.65
4 common fed freqs
Air Tac 23
Inyo NF - 2 rptr pairs
Riverside County - multi old PD freqs
Tuolumne Cmd input
Amador Command - should be 153.935 ?
BLM - 3 tacs - all narrowband and low power
NEU E Support - wrong input?

Does San Diego County typically have 1 repeater site for each of their command channels? (I just see multi PLs listed for 153.89R)

Great find! This is very useful. I have a few comments on what this "fleetmap" shows.

The BLM tacs are not new. Note that just above their listing are NIFC tacs 5, 6, and 7. BLM tacs 1-3 and NIFC tacs 5-7 are identical. Prior to the BLM and Forest Service combing their command and tac frequencies the Forest Service had NIFC tacs 1-3 and the BLM had tacs 4-7. The two were combined, both command and tac, to form the 7 channels for each. They are no longer considered BLM or Forest Service frequencies, but NIFC frequencies.

The Park Service air to ground on 168.650 is an error. The NPS eliminated the use of this frequency for air to ground as it is now "National Flight Following (NFF)." More and more dispatch centers nationwide are being equipped with NFF.

The NTIA Redbook indicated that fed commons 1 and 2 would be combined into a repeater pair with a 163.100 output and 168.350 for the input. This repeater pair is to be used for temporary, itinerant use. The Redbook also designated four new simplex commons. Two of these are shown on this "fleetmap" with the other two being 167.1375 and 173.6250. All four are used by fire crews for intra-crew logistic traffic only. Even though the 2005 Redbook direction for the conversion of 163.100 and 168.350 to repeater use, it looks like either something changed since or the direction is not being followed.

 

[zerg901]

I just found this over on the Federal forum - notice Channel D7

Every (FBI) radio has the following "D" channel lineup:

D1 168.8625 / 164.550
D2 164.550
D3 166.4625
D4 167.5625
D5 167.5375
D6 163.8625 / 167.5375
D7 163.100
D8 155.475

 

[MCIAD]

Local S.D. Help . . .

Can somebody from the San Diego area tell me what channels are used for Dispatch simulcast.

In the old days, Escondido Fire was on 154.3250, Rancho Fire on 154.2350, and San Diego Fire on 154.3100. I know Escondido still simulcasts their dispatching on 154.23250 even though they were one of the original 800MHz trunked agencies in the County (I know - I worked there in Communications when they converted in the late 80's/early 90's). I have been gone for a while, and don't know if the other agencies that eventually all went 800MHz trunked, incorporated the same "system" and maintained a VHF channel for dispatch simulcast.

AND, how do the agencies set up their Engines? Is this plan for use in HT's only, or do the agencies install/maintain VHF mobiles in the Engines also?

Any help appreciated . . .

 

[zerg901]

My impression, from reading various North Zone and San Diego City Fire documents, is that the engines are equipped with 2 complete radio systems. One VHF mobile per rig and one 800 mobile per rig - plus VHF portables and 800 portables. Apparently VHF is viewed as the backup system to the 800 Mhz system for day to day ops - and I think that VHF is considered as primary for wildland firescene use (probably because the Feds (Cleveland Natl Forest) and CalFire are primarily on VHF).

I dont know who simulcasts. Maybe a local listener can provide that info.

Peter Sz

 

[Mike_G_D]

The only other user that simulcasts on VHF that I know of, at least in the north county area, is Camp Pendleton Fire. They are now on the Cam Pendleton 380MHz P25 system but the fire dispatches are also simulcasted on the old VHF primary fire dispatch frequency of 138.600MHz. I know of no others besides Escondido that do this. I don't regularly monitor the south county agencies and I don't normally monitor the San Diego City system due to the fact that I cannot receive them well with my setup and location (indoor antennas and in northeast Carlsbad) so I can't comment on them. There are many others on here who could enlighten you better for those areas (JoeyC - maybe you know?!).

-Mike

 

[JoeyC]

Like you Mike, I only know of Escondido and Pendleton simulcasting fire dispatches. There is no longer a SDFD simulcast since they ceased simulcasting on 154.31 a couple yrs ago.

 

[MCIAD]

Thanks folks.

Re: Camp Pendleton - is there a RX CTCSS for the 138.6000? And, if you have it and want to info someone else in the Fire Service, the TX info would also be appreciated. Don't if you do and aren't comfortable.

Thanks again . . .

 

[brandon]

About 6 months ago SDFD was again simulcast on 154.310 (after being silent for years), but I'm not hearing it anymore, so it may have been testing or temporary. Too bad... as the signal was full scale even this far north!

 

[Mike_G_D]

Thanks folks.

Re: Camp Pendleton - is there a RX CTCSS for the 138.6000? And, if you have it and want to info someone else in the Fire Service, the TX info would also be appreciated. Don't if you do and aren't comfortable.

Thanks again . . .

167.9Hz for the RX CTCSS. I do not remember what the old repeater input frequency or tone was - I THINK it was 140.000MHz and the same tone but am not sure. In any case, I don't think the repeater is still active - I think it's just a transmitter only for simulcasting the dispatches for users carrying pagers, I am guessing. I never hear any responses only the initial dispatches on it so it's not simulcasting all primary fire talk group communications. This is what I hear on the Escondido VHF simulcast also (although that frequency, 154.325MHz, was never a repeater output, as far as I know, only simplex). Again, others out there may know more about these systems.

-Mike

 

[MCIAD]

Thanks . . .

Actually, that makes sense. Like I said, I worked for Escondido PD in the late 80's/early 90's when the whole City converted to 800MHz trunking. We left the VHF simplex FD dispatch frequency in place 'cuz the station alerting required it, and it was cost prohibited to convert all 5 stations over, also. It worked well already, so why fix it.

There is no reason to think C.P. would be any different. I was hoping that they might use their VHF channel for access for those of us still in the VHF world.

Thanks again . . .