Los Angeles County Sheriff?

[GottIstGutig]

Is it true? (So RR says)... the biggest county in the US's sheriff's department uses CSQ? lol Can anyone verify this?

 

[karldotcom]

the biggest county is San Bernardino, CA

 

[Mick]

L.A. Co. does not use ctcss on the output of their 480 MHz repeaters.

Is it true? (So RR says)... the biggest county in the US's sheriff's department uses CSQ? lol Can anyone verify this?

 

[bchrisman]

Re: LA County Sheriff's 480MHz system

One reason, from what I understand is that pretty much all their channels are simulcast and if the transmitters are out of phase by a certain amount, that the PL that would be transmitted would be messed up so the radios receiver may not decode it properly. LA folks should be happy, at least you can still monitor your local law enforcement.

My 2 Cents : )

Brian
Orange County, CA

.....monitoring the fire dept. and the dog catcher!!! : (

 

[GottIstGutig]

my fav. thing to listen to is EMS anyways, lol so i usually dont gonna worry. Unless they get all freaked about emt traffic too. :roll:

 

[SCPD]

may understating is what i heard, learned/ san francisco ems is encrypted
i guess they got spooked about the hospital / client privacy act.

just wondering why not more city's have gotten scared and gone that way. ??????????/

 

[scnnr]

may understating is what i heard, learned/ san francisco ems is encrypted
i guess they got spooked about the hospital / client privacy act.

just wondering why not more city's have gotten scared and gone that way. ??????????/

According to the RR database SFFD EMS 1 & 2 Medic to Hospital are digital. That does not mean that they are encrypted.

 

[JoeyC]

just wondering why not more city's have gotten scared and gone that way. ??????????/

Maybe because they understand the difference between a real HIPAA violation and hysteria?

There is no violation if the patient is not identified. It has been YEARS since I've heard EMS use a patients name over the radio.

 

[bill71]

LASO is the largest Agency in personel. And yes the majority of Ch. are CSQ. My understanding was also the band they are in had little interference, so they never toned it. Makes for easy listening. LACoFD Blue are the same way. Remember though, SO Dispatch is semi-duplex, so when mobile units talk you hear a beeping noise, just like the deputies. If you program the modile side and are close you can hear them though. The dispatcher has the ability to turn the repeater function on if needed. Growing up in the north part of Orange Co. my friends brothert was an LA Deputy, what you heard on the scanner was the same thing coming out of his issue radio. It is kind of funny that that agency is so easy to monitor.

Bill H

 

[JoeyC]

It is kind of funny that that agency is so easy to monitor.
Bill H

I'm curious why you feel LASO is so easy to monitor when you must listen to 2 freqs to get the whole conversation?

 

[bill71]

The simplicity of the system is what is funny compared to others that do everything under the sun to hide their activities. Much smaller agencies have put millions into systems that don't have a fraction of events LASO does.
Also the dispatch channels are the ones that are usaelly not repeated, anything worth really listening to is switched to tac ch. or M/A.

Bill H.

 

[RobertW1]

It is kind of funny that that agency is so easy to monitor.
Bill H

I'm curious why you feel LASO is so easy to monitor when you must listen to 2 freqs to get the whole conversation?

Rather than listening to the "beep, beep, beep" on the dispatch channel when the deputy is talking to dispatch, how do you hear his conversation? Is it the same frequency only 3.000 MHz higher?

Here is what FreqOfNature has to say about the Sheriff freqs:

"The Dispatch frequencies are “one-way”, meaning only SCC can only hear the field deputy talking. Other people monitoring hear a beeping alert tone to let them know the frequency is in use. SUD is a “clear” frequency, everyone can hear transmission and EVERYONE is listening. Since the “exciting stuff” happens on SUD, Department “Brass” often listen to it. The news media regularly monitor it as well."

What frequencies are used to monitor SUD or Special Units Dispatch?

Thanks,

 

[Mick]

483.5375 LASD Special Enforcement Units dispatch
483.8875 Special Ops
482.9625 Speical Ops

Here is what FreqOfNature has to say about the Sheriff freqs:

"The Dispatch frequencies are “one-way”, meaning only SCC can only hear the field deputy talking. Other people monitoring hear a beeping alert tone to let them know the frequency is in use. SUD is a “clear” frequency, everyone can hear transmission and EVERYONE is listening. Since the “exciting stuff” happens on SUD, Department “Brass” often listen to it. The news media regularly monitor it as well."

What frequencies are used to monitor SUD or Special Units Dispatch?

Thanks,[/quote]

 

[akardam]

may understating is what i heard, learned/ san francisco ems is encrypted
i guess they got spooked about the hospital / client privacy act.

just wondering why not more city's have gotten scared and gone that way. ??????????/

According to the RR database SFFD EMS 1 & 2 Medic to Hospital are digital. That does not mean that they are encrypted.

Both of the primary SF EMS channels are indeed encrypted. They're digital too, to boot

 

[PeterSz]

akardan - can you clarify? Which 2 SF EMS channels are encrypted? 462 Mhz or 800 Mhz Talkgroups? Amb to Hosp or Dispatch? peter S

 

[nhp9943]

Here is how the system works:

Deputies transmit on the high side of the split 3Megs
That portion is received via several satelitte receivers and sent via microwave to SCC in East LA. This Signal is simultanuosly routed to the station desk and watch commander office. This is so the station desk and WC can here what they field deputies are saying and not the busy tone as it is called. Only units in the field here the busy tone and the RTO has the ability to activate the "patch" which simply means redirecting receive audio and suspending the busy tone so field units can coordinate priority calls. This is something that is from way back when LASD was on 39 MHZ and did not have portables. When I worked there we used the outside speaker on the siren controler to hear radio traffic when on a "T" stop or "Code 6". I was there when the entire county had one car/car channel aka "Charlie" and one Helicoptor to car channel aka "Henry" some old timers may remember this. Nowadays these new guys think that 64 channels isn't enough. LOL. Also all LASD radios have ANI and the capabilty to talk direct unit/unit with out going through dispatch. The entire system though basic, is set up with a lot of forthought. I was sad to see them make the decision to route all calls through the MDT's as you do miss a lot of low priority stuff which can be just a interesting as the hot calls which are always voiced in addition to being routed to terminals.

 

[akardam]

akardam - can you clarify? Which 2 SF EMS channels are encrypted? 462 Mhz or 800 Mhz Talkgroups? Amb to Hosp or Dispatch? peter S

SF has no UHF channels anymore. They are entirely on the 800MHz trunked system. SF EMS 1 & 2 (Medic-Hospital 7 & 8) are both digital AND encrypted talkgroups. As was mentioned elsewhere this was done mainly for HIPAA complaince.