What are trunked frequencies?

A trunked system is a complex computer-controlled two-way radio system that allows users to “share” a set of frequencies. Instead of selecting a specific frequency for a transmission, the radio selects a programmed trunking bank in the system.

What is a trunking radio scanner?

A trunked radio system is a two-way radio system that uses a control channel to automatically assign frequency channels to groups of user radios. These systems typically have access to multiple channels, up to 40-60, so multiple groups in the same area can communicate simultaneously.

Can you listen to encrypted police frequencies?

No. This is illegal & no police scanner (that the public can access) can monitor encrypted channels.

How do you know if frequency is trunked?

Generally speaking if a list of frequecies has what’s called “Talk-Group ID’s” then you know they’re trunked, Also if you’re listening to them on a scanner and an ID flashes on the screen, Then they’re trunked.

What is a triple trunking scanner?

Triple-trunking lets you follow a signal in virtually any market that uses an analog trunking system. Signal Stalker circuitry searches for nearby frequency transmissions and lets you hear a nearby radio without knowing its frequency.

How many frequencies does a trunked system have?

For example, the Fort Worth trunked system has only 20 frequencies, but services over 400 talkgroups. All radio channels in a trunking system are repeaters, so system traffic can be widely heard.

What is a trunked radio system?

Trunking is the use of several repeaters, on different frequencies in the same band, operating together under computer control to allow the pooling of resources for several agencies. A presentation on the basics of trunked radios systems was done at Defcon 15 and a video of that presentation is available here .

How to set up a trunking system?

The Control Channel is the brain of the system, assigning each user on the system a frequency when transmitting. Step 1 – First you need to determine the type of trunking system. Step 2 – You would then enter the group of frequencies of the nearest transmitter site in your area.

What is a trunking transceiver?

A trunking transceiver is a microprocessor-controlled radio capable of receiving instructions from the system controller and changing frequencies on the fly. All trunked radios operate in a similar manner although the type of trunking technology used by each type of trunked radio system differs greatly.