E F Johnson Company 2425130 Benutzerhandbuch

18

May 2002

Part No. 002-5100-100

does not key. When the penalty timer expires, a beep 
sounds and the transmitter can be keyed.

A conversation timer can be programmed on 

conventional systems in addition to the time-out timer 
described on page 12. This timer limits the total length 
of a conversation rather than just the length of each 
transmission as with the time-out timer. More informa-
tion on this timer follows: 

•

It can be programmed for times up to 7.5 minutes.

•

It is reset when the time between transmissions 
exceeds the time programmed for the penalty timer 
just described.

•

A warning beep sounds 5 seconds before this timer 
disables the transmitter.

•

When this timer disables the transmitter, a contin-
uous tone sounds and the red transmit indicator 
turns off. The PTT switch must then be released 
until the penalty timer expires (indicated by a beep).

Normally, all transmissions go through a repeater 

which usually increases range. However, there may be 
times when you are out of range of the repeater and 
therefore unable to talk to anyone even though the 
mobile being called is only a short distance away. To 
allow communication in this situation, repeater talk-
around can be selected. Transmissions then occur on 
the receive frequency which permits direct mobile-to-
mobile communication.

Repeater talk-around can be selected if the RTA 

option key or menu parameter is programmed. When 
talk-around is enabled by this key, 

 is displayed. 

This feature remains enabled during scanning, and the 
selected mode does not change when another channel 
is selected or power is cycled. Talk-around is available 
on conventional channels only.

If the Displayed Information option key or menu 

parameter is programmed, it can be used to display the 
channel frequency in megahertz. Pressing this key 
toggles between displaying the standard channel alias 
and the channel frequency. The receive frequency is 

displayed when receiving and the transmit frequency is 
displayed when transmitting. This feature is available 
on conventional channels only.

The Emergency option key or menu parameter 

can be programmed to alert a dispatcher or someone 
else of an emergency condition. It is available on 
conventional digital (Project 25) and/or SMARTNET/
SmartZone channels, but not conventional analog 
channels. If you have this function, consult your 
system operator for more information on how it is 
used in your application. 

Channel scanning features common to all oper-

ating modes are described starting on page 13. When 
the transmitter is keyed with scanning enabled, the 
transceiver can be programmed so that transmission 
always occurs on one of the following channels:

•

Selected channel

•

Priority channel (see following)

•

Channel of the call if a response is made before 
scanning resumes.

General

The priority channel sampling feature ensures 

that messages on the priority channel are not missed 
while listening to a message on some other channel. 
The transceiver can be programmed so that the priority 
channel is a fixed channel programmed in the current 
scan list, the currently selected channel, or not used. 
When scanning and the selected channel is a fixed 
priority channel, 

 is indicated in the display.

Priority channel sampling occurs only with stan-

dard conventional scanning. It does not occur with 
radio-wide scanning, when listening to any type of 
SMARTNET/SmartZone call, or when transmitting. A 
series of “ticks” may be heard when the priority 
channel is sampled while listening to a message on 
some other conventional channel.