OPERATION
2-11
November 2001
Part No. 001-7240-001
2.4.5 ENCRYPTION
Encryption is currently not available.
2.4.6 HOME SYSTEM/GROUP SELECT
The Home Select feature provides a home
system/group quick select by pressing FCN HOME.
The home system/group programmed for the current
bank is then displayed and it becomes the selected
system/group. If no home system/group has been
programmed, this function is not available. If the home
system/group is selected while scanning, scanning
stops for the programmed scan delay period.
2.4.7 OPTION SELECT
Option select is currently not available.
2.4.8 POWER SELECT
Either high (4 watts) and low (1 watt) transmit
power output is programmable on each locality (power
output is not user selectable). When low power output
is selected, “
L
” is indicated in the display. The low
power mode usually increases battery life and
decreases range, and the high power mode usually
causes the opposite to occur. The low power mode is
automatically selected during a low battery condition
(see Section 2.3.8).
2.4.9 PROCEED (CLEAR-TO-TALK) TONE
This is a tone that sounds shortly after the PTT
switch is pressed to indicate that the radio system has
been accessed and speaking can begin. This tone can
be programmed to be a single or distinctive
(3-beep) tone.
This tone always sounds with LTR-Net and LTR
standard group calls if tones are enabled (see Section
2.4.12). It can also be programmed to sound with
LTR-Net/LTR telephone and auxiliary calls (first
access only) and conventional calls as follows:
•
To enable it on LTR-Net and LTR telephone and
auxiliary calls, check the “Conversation Enabled”
box in the Edit > Mobile Radio Parameters > Basic
Parameters screen.
•
To enable it on conventional calls, check the
“Conventional Enabled” box in the same screen.
The proceed tone normally sounds almost imme-
diately when the PTT switch is pressed. However, with
some calls, such as wide area, the user should wait a
short time after pressing the PTT switch before
speaking. The proceed tone delay of 0-2.5 seconds can
be programmed in the Timing Parameters screen. This
delay can then be enabled on each group by checking
the “Delayed Proceed Tone” box. If this box is not
checked, no delay occurs.
On LTR-Net and LTR systems, if the radio
system is busy when making a call, the busy tone
sounds instead of the proceed tone and “BUSY” is
indicated in the display. If an access attempt is unsuc-
cessful, such as because of an out-of-range condition,
the intercept tone sounds and “NO ACESS” is indi-
cated in the display. Refer to Section 2.12 for more
information on these conditions.
If the proceed tone is enabled on conventional
systems and the Transmit Disable On Busy feature is
used to automatically perform monitoring, the proceed
tone does not sound if the channel is busy (see Section
2.11.3). Otherwise, it sounds even if the channel is
busy.
2.4.10 RECEIVE-ONLY GROUPS
Receive (monitor) only groups can be
programmed in all operating modes so that transmit-
ting is automatically disabled. To program receive-
only LTR-Net or LTR groups, program an encode ID
of “Disabled”. To program receive-only conventional
groups, on the group screen select Tx Option =
Disabled. If the PTT switch is pressed with one of
these groups selected, the intercept tone sounds and
“TX DISBL” is displayed.
2.4.11 TIME-OUT TIMER
The time-out timer disables the transmitter if it is
keyed continuously for longer than the programmed
time. It can be programmed for 0.5 - 5.0 minutes or
disabled entirely. If the transmitter is keyed continu-
ously for longer than the programmed time, the trans-
mitter is disabled, “TIMEOUT” is indicated in the
display and the intercept tone sounds. The timer and
tone are reset by releasing the PTT switch.
