Radio Shack 20-164 Trunking Modes, Motorola Trunking Setup, To set Open or Closed mode for a bank

Trunking Modes

In Closed mode, the scanner stops only on transmissions with saved and unlocked Talk Group IDs. This lets you focus a scan on the frequencies you have identified, ignoring other transmissions.

In Open mode, the scanner stops for transmissions on any unlocked channel. This lets you search for Talk Group IDs that you can then save.

While scanning, “–” appears for Closed mode and “+” appears for Open mode under

the channel storage bank’s number. When the scanner stops on a channel,”OPEN” or “CLOSED” appears.

To set Open or Closed mode for a bank:

1.Press MAN.

2.Use  or  to select a bank.

g3. Press FUNC then DELAY. “Bank OPEN” or “Bank CLOSED” appears.

Motorola Trunking Setup

Motorola systems can allocate as few as five frequencies to up to several thousand groups of users in three categories:

•Type I – User groups are assigned to fleets. To scan, you must program a fleet map into the scanner.

•Type II – The Talk Group ID contains 4 or 5 digit numbers.

•Hybrid – Combines Type I and Type II formats.

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