Los Angeles County Sheriff Department

[jodyleewallace]

The beeping following a dispatch call on a dispatch frequency is the mobile unit responding to the call. According to RadioReference the corresponding "L-Tac" frequency should get you the mobile unit responding to the call. It doesn't appear to be the case. Anyone have any info?


NOTE: Mobile traffic is not rebroadcasted over the output frequency of the dispatch channels. Instead, only a beeping tone is broadcast to signify to the field units that someone is talking. To monitor units in the field you must program in the input frequencies also. The corresponding L-TAC channel is included in brackets.

 

[kma371]

The beeping following a dispatch call on a dispatch frequency is the mobile unit responding to the call. According to RadioReference the corresponding "L-Tac" frequency should get you the mobile unit responding to the call. It doesn't appear to be the case. Anyone have any info?


NOTE: Mobile traffic is not rebroadcasted over the output frequency of the dispatch channels. Instead, only a beeping tone is broadcast to signify to the field units that someone is talking. To monitor units in the field you must program in the input frequencies also. The corresponding L-TAC channel is included in brackets.

It says you must monitor the input.

L-TAC in brackets just tell you what tac is assigned for that particular dispatch freq.

 

[PaulNDaOC]

L-Tac is a completely different channel. It's for car-to-car, car-to-station.

Listening to the input to the dispatch channel is not really worth the trouble since almost all units use their handheld radios when talking to dispatch, even inside their car and leave the car radio on L_tac all the time.

Even the Sheriff's Dept receivers pick up the portables in the cars scratchy and broken most of the time, so your chances of hearing anything are limited to if the deputy is within a 1/4 to 1/2 mile if your lucky and he/she is outside the car.

 

[jodyleewallace]

Oh, OK!

Well that clears that up! Thanks so much!!

 

[Jimulations]

Are the input frequencies published?

 

[lacoscannerguy]

Are the input frequencies published?

The inputs are 3 MHz up from the output. For example, output of 482.9875 will have an input of 485.9875.

UHF has standard inputs and outputs. Here’s a basic description: https://en.m.wikipedia.org/wiki/Radio_repeater

 

[kma371]

Are the input frequencies published?

You should be able to select "shown" on an input frequencies drop down box at the top of the page