E F Johnson Company 2425372 Benutzerhandbuch

A system is a collection of channels or talk groups belonging to the same repeater site. It 
defines all the parameters and protocol information required to access a site. Up to 16 
systems of any type can be programmed.

The maximum number of channels assignable to a system is limited to 256. Channels may 
also be limited by available memory space as described in the following information.

A channel selects a radio (RF) channel or talk group as follows:

Conventional Analog Mode - A channel selects a specific radio channel, Call Guard 
(CTCSS/DCS) squelch coding, and other parameters unique to that channel.

Conventional Project 25 Mode - A channel selects a specific radio channel, NAC 
squelch coding, talk group ID, and other parameters unique to that channel. 

SMARTNET/SmartZone and Trunked Project 25 Modes - A channel selects a 
specific talk group, announcement group, emergency group, and other parameters 
unique to that talk group.

A maximum of up to approximately 256 channels can be programmed with the preceding 
modes. These channels can belong to a single system or multiple systems. The maximum 
number is also limited by the available memory. For example, since more memory is 
required to program a SMARTNET system than a conventional system, the total number 
of channels decreases as the number of SMARTNET channels increases. The 
programming software displays a bar graph which shows the amount of available memory 
space that is used by the current data.

A zone is a collection of up to 16 channels of any type. For example, a zone could include 
12 conventional channels and four SMARTNET channels. One use of zones may be to 
program the channels used for operation in a different geographical areas. The maximum 
number of zones is 16.