Incase you need it i am using an ICOM ID-4100A. The handheld can remotely choose frequencies on the VHF-Low (30-50 MHz), VHF-High (138-174 MHz) and UHF (450-512 MHz) bands, thereby allowing communication with agencies that use those bands. ), you need to tell your scanner to listen to that frequency. The mobile extender operates on one of 16 statewide extender frequencies on the 700 MHz band and listens for transmissions one of those frequencies from a nearby handheld portable, which are then re-transmitted through the vehicle-mounted radio out on the VHF low band car-to-station (mobile) channel (between 39-46 MHz). The dispatch centers use one or more electronic sites to communicate with mobile units. If all the electronic sites on Tan 2 are simulcast then each officer would hear everything on their frequency regardless of what electronic site it is transmitted from. Tuning is important, you don’t want to capture all the signals in your county. As with any capital improvement program in California, delays are occurring. Now, there will be a programming button on your device. The CHP employs two frequencies for communications between units in the field and their dispatch centers. REDDING DISPATCH CENTER This is a very well structured and comprehensive database of radio scanner frequencies across the United States and across the world.
As of December, 2015 reports were received that 154.905 MHz handheld extenders were still being used.


For individual office VRS usage, refer to the Divisional listings.Outside agency access, special operations, and homeland security use.Will be located at CHP stations for officers to reach dispatch via their portables.

Board index Radio Scanner. Several California forum threads have links to updated maps and other documents outlining changes and updates as well as field observations of changes being implemented. Area offices are equipped with a stationary extender that officers in and nearby the office can use while working there. Direct communications between handheld extender units is also possible. Since the advantage of having the other mobile units hear each other is lost, the mobile traffic is not transmitted over the base frequency in rural areas. This is why you may hear the base frequency come in well at times when a nearby site is being used and not so well when another, more distant site is being used. For example, if an officer is working an incident near the northern boundary of L.A. County on State Highway 14, communicating through Hauser Peak and another officer is at the northern boundary of L.A. near Gorman and communicating through the Tejon electronic site both have their radios set to the CHP "Tan 2." The handheld can remotely choose frequencies on the VHF-Low (30-50 MHz), … When transmitting to a mobile unit the dispatcher can choose the electronic site they want to use, and normally choose the same site the voter chose when replying to a mobile unit. These are being phased out on a schedule agreed to by the FCC as this frequency is being transmitted with a "wideband" signal (25 kHz) instead of a "narrowband" (12.5 kHz) signal required for radios at and above 138 MHz (bottom limit of the VHF-High band).

Be sure to check the system name of each frequency and talkgroup to make sure you are inputting everything correctly into your scanner (some systems are different types, so you'll need to input each system separately). In Australia, if a transmission is not “telecommunication,” you can have a scanner and listen to every channel in your local area.The use of a scanner to search for the frequencies is restricted in five states in the States if you’re on an automobile. California Highway Patrol (CHP) This feed covers both LA and Orange Counties. The CHP is undergoing a major radio system update.

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