Question? LASD San Dimas

[Otter234]

Hello, there is a quick question for all of you guys on the LASD San Dimas area all of the units are separated and cover different cities, and don't tell me the frequency which is is there a way to try to find the frequencies for the city of San Dimas only?

 

[Randyk4661]

All those frequencies have a transmitter within the city limits of San Dimas.

This is a much better breakdown of the Sheriff's radio system

Los Angeles County, California (CA) Scanner Frequencies and Radio Frequency Reference

Scanner Frequencies and Radio Frequency Reference for Los Angeles County, California (CA)

www.radioreference.com

This is the new system and they maybe using this system now, if not it wont be much longer before they do.

Los Angeles Regional Interoperable Communications System (LA-RICS) Trunking System, Los Angeles County, California

Los Angeles Regional Interoperable Communications System (LA-RICS) Trunking System Profile

www.radioreference.com

 

[AM909]

Short answer: Dispatch 6 – 482.9375 and LTac 7 – 482.2375 for Walnut / San Dimas / Diamond Bar and possibly some others when needed.

LASD dispatchers often handle multiple stations at once, so they patch the channels together to keep multiple conversations from happening at once. Not sure how they choose the groupings, but for example, I've heard Industry and Palmdale/Lancaster both being dispatched on Industry (Dispatch 8 – 483.6875; presumably patched to Dispatch 15 – 483.0375). I don't know if it happens for San Dimas in particular, but it seems likely, as it's kind of a sleepy area (or it used to be) and I wouldn't think it needs a dispatcher all to itself. Unfortunately, that means you have to hear all the traffic from all the stations in the grouping on this carrier-squelch conventional system.

The licenses aren't much use, especially in this case, as Johnstone Peak ("San Dimas") is a primary coverage site for LASD, with many dispatch / LTac / ATac / CTac / STac /etc. channels scattered over many licenses. There are 55 channels on the WII791 license alone.

 

[markclark]

AM909:

" Not sure how they choose the groupings" A computer assigns the workload to each RTO based on radio traffic handled and the number of RTO's on duty.

 

[AM909]

AM909:

" Not sure how they choose the groupings" A computer assigns the workload to each RTO based on radio traffic handled and the number of RTO's on duty.

So the object is just to balance the workload evenly or do other things factor in the decisions?

 

[markclark]

The idea is to balance the workload because not all stations or frequencies have equal traffic.

 

[PaulNDaOC]

The algorithm takes into account number of freqs on a console, number of dispatcher transmissions, calls and messages handled, and wanted person or vehicles hits handled.

 

[jrholm]

Also dispatch 6 is shared at all times with Walnut station as is the L-Tac. Walnut units are all 290 and San Dimas is 80.

 

[AM909]

Also dispatch 6 is shared at all times with Walnut station as is the L-Tac. Walnut units are all 290 and San Dimas is 80.

The database says Walnut, San Dimas, and Diamond Bar are always on Disp6 and LTac7.

 

[jrholm]

Walnut and Diamond Bar are the same station.