TRANSCEIVER OPERATION

to that channel are then reassigned to all the other channels in the current zone. The reassignments remain in effect even after power is cycled.

3.To restore all Call Guard codes in the current zone to the original settings, press the “0” key.

2.4.7 PENALTY TIMER

A penalty timer may be programmed on conven- tional channels to prevent transmissions for a period of time after the time-out timer described in Section 2.3.9 disables the transmitter. The penalty timer starts when the PTT switch is released after the transmitter has been disabled. If the PTT switch is pressed during the penalty time, the time-out indication occurs again. A beep sounds when the penalty timer expires and the transmitter can then be keyed.

2.4.8 CONVERSATION TIMER

A conversation timer can be programmed on conventional channels to limit the total length of a conversation rather than just the length of each trans- mission as with the time-out timer. This timer is reset when the time between transmissions exceeds the penalty time just described. A warning tone sounds 5 seconds before the conversation timer expires. When it expires, the transmitter is disabled and a warning tone sounds. The transmitter remains disabled for the length of the penalty time, and a beep sounds when it can be keyed again.

2.4.9 REPEATER TALK-AROUND

Normally, all transmissions go through a repeater which usually increases range. However, if out of range of the repeater, you cannot talk to anyone else on that channel even though the mobile you are calling may be only a short distance away. To allow communi- cation when this situation occurs, repeater talk-around can be used to transmit on the receive frequency. This allows direct communication with a mobile without going through a repeater.

Repeater talk-around can be selected if the Repeater Talk-Around option switch is programmed. When talk-around is enabled by this switch, the icon is displayed and “RTA ON” is flashed in the display. Then when it is disabled by pressing this

switch again, that icon is no longer displayed and “RTA OFF” is flashed. Changing channels or turning power off does not change the selected talk-around mode.

2.4.10 POWER OUTPUT SELECT

If the High/Low Power option switch is programmed and power selection is permitted on the current channel by programming, either high or low transmitter power can be selected. Generally, the high power setting transmits longer distances but uses more battery power, and the opposite occurs with the low power setting. When the low power is selected on the current channel, “LOW” is indicated continuously near the bottom of the display.

Pressing the High/Low Power switch toggles the power setting. The new level is flashed in the display when this switch is pressed as “HI POWER” or “LO POWER”. If power selection is not permitted on the channel, the fixed power level is flashed and no power change occurs. Turning power off or changing chan- nels does not change the power setting selected for a channel.

2.4.11 CONVENTIONAL MODE SCANNING

General

The following information describes scanning features unique to conventional operation. Scan opera- tion common to all modes is described in Section 2.3.11, and scan operation unique to SMARTNET/ SmartZone operation is described in Section 2.5.12.

Selecting a Scan List

When standard scanning with full keypad (15- key) models, one of up to three scan lists can be selected. These lists can be user programmed as described in the information which follows. With limited keypad (3-key) models, only one scan list is available and is not user programmable. However, nuisance channels can still be temporarily deleted as described in Section 2.3.11.

Proceed as follows to select a scan list with full keypad models:

November 1999

 

Part No. 001-7780-500

2-10

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Image 24
EFJohnson 7780 Penalty Timer, Conversation Timer, Repeater TALK-AROUND, Power Output Select, Conventional Mode Scanning