CHP 460.375 in L.A.

[DPD1]

Does anybody know what the formal assigned use of 460.375 is for CHP in the L.A. area? Seems like I will hear air units check in there every once in a great while to get info, but I've also heard a couple other things.

Dave
www.DPDProductions.com
Antennas & Accessories for the RF Professional & Radio Hobbyist

 

[Radio_Lady]

Does anybody know what the formal assigned use of 460.375 is for CHP in the L.A. area? Seems like I will hear air units check in there every once in a great while to get info, but I've also heard a couple other things.

I don't know its formal use, but my understanding has been that it's available to outside agency units as an "Access" frequency to the LACC, similar to LASD's 483.5625, Glendale PD's 482.050, and LAPD's 484.4375.

 

[DPD1]

That seems like a good one to listen to then. Maybe the air units just find it an easy access for general information.

Semi related, I noticed a CHP plane has been around the valley lately. The helicopters are frequent, but I don't recall their planes before.

Dave
www.DPDProductions.com
Antennas & Accessories for the RF Professional & Radio Hobbyist

 

[spock00]

At one point the frequency seemed to be regularly rebroadcasting CHP 42.36000/42.78000 West Valley Office (SFV) Dispatch. I've also heard some interesting traffic such as an LAPD motorcycle officer coming up on freq to report an accident on the 210 freeway.

 

[KMA367]

I've also heard some interesting traffic such as an LAPD motorcycle officer coming up on freq to report an accident on the 210 freeway.

Oh my. It's amazing that he/she even knew about having the frequency in the radio (Channel 174 in their Astro Sabers) and what its intended use is. The officer must be a radio nerd. I know they all got training when the radios were handed out, and probably a frequency list, but to actually REMEMBER it...

Before the State Police were absorbed into the CHP in about 1995, 460.375 was the State Police frequency for the Southern California area.

 

[spock00]

This freq is on multiple mountain sites in the greater LA area with different PL tones. You'll notice a difference in signal strength and different PL if you're scanning the freq. I've also heard CHP units from West LA and other LA area CHP offices talking to one another or the CHP dispatcher on this channel.

 

[Mick]

The output ctcss on 460.375 is always 127.3, the input of 465.375 has different ctcss tones to open up the different transmitter sites is how I understand this repeater to work.

This freq is on multiple mountain sites in the greater LA area with different PL tones. You'll notice a difference in signal strength and different PL if you're scanning the freq. I've also heard CHP units from West LA and other LA area CHP offices talking to one another or the CHP dispatcher on this channel.

 

[Sac916]

In Sacramento, the CHP Capitol Division uses several of the 400 freqs. 460.375 is primary patrol dispatch used 24/7. That freq and other 400 freqs (found in database) are used for routine patrol, dignitary escort and protection, investigations and special assignments such as; protests, dignitary visits, and political events. The State Capitol has it's own dispatch (800MHz) for the Capitol building and campus itself.

I have heard Captiol Division 460.375 (and other 400 freqs ) used well outside of the Sacramento area. Since the Governor and othe political types like to spend A LOT of time in LA, I'm certain there is a lot of Capitol Division activity to be heard.

Also, I have monitored several of the side 400 freqs used in simplex/direct mode.

 

[karldotcom]

Tonight I heard a Union Pacific Railroad Police unit on 460.375 in Los Angeles, requesting an ambulance for someone found along the railroad tracks. They were clearly talking to a CHP Dispatcher...and after that request, did a wants/warrants check on the woman, who apparently had been there a week.

What was odd was that I only heard the Dispatcher about every other transmission....meaning she was loud and clear at times....and at other times the UPRRPD officer was responding to something I didnt hear.

 

[LAflyer]

You'll also hear DMV units (somesort of inspectors) on it. I've also heard the Governors protective detail on simplex several times around town here in LA (esp Westside - Beverly Hills / Santa Monica area).

 

[DPD1]

Tonight I heard a Union Pacific Railroad Police unit on 460.375 in Los Angeles, requesting an ambulance for someone found along the railroad tracks. They were clearly talking to a CHP Dispatcher...and after that request, did a wants/warrants check on the woman, who apparently had been there a week.

What was odd was that I only heard the Dispatcher about every other transmission....meaning she was loud and clear at times....and at other times the UPRRPD officer was responding to something I didnt hear.

That's an interesting one... But I have heard the same thing with the base response and haven't figured it out just yet. Sometimes base response is heard, other times not... During the same conversation.

 

[code3cowboy]

Tonight I heard a Union Pacific Railroad Police unit on 460.375 in Los Angeles, requesting an ambulance for someone found along the railroad tracks. They were clearly talking to a CHP Dispatcher...and after that request, did a wants/warrants check on the woman, who apparently had been there a week.

What was odd was that I only heard the Dispatcher about every other transmission....meaning she was loud and clear at times....and at other times the UPRRPD officer was responding to something I didnt hear.

UP has contracted with CHP for dispatching services. As many if not most of the UPPD explorers have a VHF radio and maybe a scanner, how the Agents contact the CHP is still largely TBD. In some areas the Agents have secured UHF and or 800mhz radios, and are able to contact some of the CHP dispatch centers that way. In other areas Agents have secured a Lo Band radio, but they only have dispatch access in the truck at that point. The program/contract is new, and the kinks are still being ironed out.

 

[jlanfn]

UP has contracted with CHP for dispatching services. As many if not most of the UPPD explorers have a VHF radio and maybe a scanner, how the Agents contact the CHP is still largely TBD. In some areas the Agents have secured UHF and or 800mhz radios, and are able to contact some of the CHP dispatch centers that way. In other areas Agents have secured a Lo Band radio, but they only have dispatch access in the truck at that point. The program/contract is new, and the kinks are still being ironed out.

When you say "secured" do you mean "acquired" or "encrypted"?

 

[DPD1]

UP has contracted with CHP for dispatching services. As many if not most of the UPPD explorers have a VHF radio and maybe a scanner, how the Agents contact the CHP is still largely TBD. In some areas the Agents have secured UHF and or 800mhz radios, and are able to contact some of the CHP dispatch centers that way. In other areas Agents have secured a Lo Band radio, but they only have dispatch access in the truck at that point. The program/contract is new, and the kinks are still being ironed out.

Interesting... Seems like they would want something a little more standardized and system wide... Maybe something that modifies the existing pbx system or something.

 

[code3cowboy]

Interesting... Seems like they would want something a little more standardized and system wide... Maybe something that modifies the existing pbx system or something.

It is a move to real police dispatchers, and the ability to reach a person on the radio who can send backup. I can think of 3 Agents who do not know what more than 2 channels in their VHF mobiles are. I can think of about 8 frequencies that are ever used, and 2 that have anyone else listening. There is no standardized VHF load.

The nextels do not work everywhere.