SM06 Rev. 4.10

Tac/Com Control Head Manual

3.5.3Summary of Channel Labels

Tac/Com permits two kinds of channel numbers (set at installation time) for ease of use and as a memory aid. Block numbers begin with a letter, a-d, and have 32 channels per block. This allows channels to be grouped together for convenience (i.e., all channels for forestry in one block, all EMS in another, all police in another, etc.), and also clearly shows which channels can be scanned together as a group. NAT NT-series radios hold 32 channels at one time for scanning, and they must be from the same block. Block numbers are a reminder of which channels are grouped together.

Blocks:

a01-a32

Sequential Numbers:

001-032

 

b01-b32

 

033-064

 

c01-c32

 

065-096

 

d01-d32

 

097-128

The control head can also be set to show 128 sequential channels (or some lesser number, if preferred, and if it has been set up that way at installation time). In this case, the channel numbers go 001 to 128. This is often used with Flexcomm radios, where there is no scan function.

There is also one additional mode, which is supported only on the NT136-PAS multimode transceiver. In this case, channel numbers are labelled A01 to A64 and F01 to F64. The 'A' channels are AM, and the 'F' channels are FM. Each 32-channel block may be scanned within each bank (1-32 and 33-64), but all channels must be AM or FM within the scan group.

Blocks:

A01-A32

Sequential Numbers:

001-032

 

A33-A64

(equivalent)

033-064

 

F01-F32

 

065-096

 

F33-F64

 

097-128

In addition to using the front panel channel and radio switches, the remote channel and radio switches may also be used, if installed. They work exactly the same way as the front panel switches.

A DTE12 or DP12 can also be used to access a channel directly by number. In this case, just key in the number (sequential number) and press the ENTER key on the DTE12. It is important to understand how channel numbers work, because some things may occur on the display that might be confusing. An example is shown below, demonstrating what happens when the control head is channelled below a01.

>REPROGRAMMING

127=FORESTRY * -

Note that the control displays the message REPROGRAMMING while it re-loads the next block of 32 channels into the NAT radio for scanning. This happens very quickly, but creates a short pause when scrolling through each block of 32 channels.

Jan 4, 2006

Page 3-15

ENG-FORM: 806-0106.DOT

 

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