Uniden BC250D English Owners Manual - Page 77

Toggling the Status Bit, Control Channel Only Mode

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Note: • If the system is not tracking properly, you may need to try a new Base Frequency or Offset Channel or you may be missing frequencies from the system. • You can set up to three Base, Spacing and Offsets for Motorola VHF/UHF trunked systems. Toggling the Status Bit On Type II trunking systems there is a method by which specialized types of communications utilize unique talkgroup numbers. An emergency call will occur on a unique talkgroup from its primary assignment, for example. Because the BC250D defaults to Status-Bit ON mode, you never need to worry about missing these transmissions. If you have programmed talkgroup 33264 into Scan List memory, for example, and there is an emergency call within the group, you will hear it on 33264. The only time you may wish to turn Status Bits OFF is if you're trying to figure out the proper Fleet Map of a Type I trunking system. To turn Status Bits OFF, enter into the Menu mode and select 2:SCAN OPTION / 2:TRUNK - select bank number - / 9:STATUS BIT. (This feature does not apply to EDACS and LTR operation within the scanner.) Then rotate the VFO to change the setting (1:ON to 2:OFF) and press E to program your change. Control Channel Only Mode When this function is activated, trunking is performed using Control Channel data only. Voice channel (also known as "DATA channel") frequencies do not have to be programmed into memory. This feature only applies to Motorola 800 MHz and 900 MHz systems. To turn this function on, choose Motorola 1:TYPE2 800 or 3:TYPE2 900 or 2:TYPE1 in the Menu mode. Then set to the desired control plan by selecting 2:SCAN OPTION / 2:TRUNK - select bank number - / :CNTRL CH ONLY. You must choose one of 4 frequency plans (only when 800 MHz systems is selected) before you begin to Control Channel Trunk. The default, Plan 1, is the most common. Read the description of the Plans below for details on which may apply for you. PLAN 1: Use Plan 1 if the last three digits of ALL the frequencies in use end in one of the following three digits: 125, 375, 625, or 875 (example: 856.1125, 860.7375, 859.6625, 855.8875). 73

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73
Note:
•
If the system is not tracking properly, you may need
to try a new Base Frequency or Offset Channel or
you may be missing frequencies from the system.
•
You can set up to three Base, Spacing and Offsets
for Motorola VHF/UHF trunked systems.
Toggling the Status Bit
On Type II trunking systems there is a method by which
specialized types of communications utilize unique talkgroup
numbers. An emergency call will occur on a unique talkgroup
from its primary assignment, for example. Because the
BC250D defaults to Status-Bit ON mode, you never need to
worry about missing these transmissions. If you have
programmed talkgroup 33264 into Scan List memory, for
example, and there is an emergency call within the group,
you will hear it on 33264.
The only time you may wish to turn Status Bits OFF is if
you're trying to figure out the proper Fleet Map of a Type I
trunking system. To turn Status Bits OFF, enter into the Menu
mode and select
2:SCAN OPTION
/
2:TRUNK
- select
bank number - /
9:STATUS BIT
. (This feature does not
apply to EDACS and LTR operation within the scanner.) Then
rotate the
VFO
to change the setting (
1:ON
to
2:OFF
) and
press
E
to program your change.
Control Channel Only Mode
When this function is activated, trunking is performed using
Control Channel data only. Voice channel (also known as
"DATA channel") frequencies do not have to be programmed
into memory. This feature only applies to Motorola 800 MHz
and 900 MHz systems.
To turn this function on, choose Motorola
1:TYPE2 800
or
3:TYPE2 900
or
2:TYPE1
in the Menu mode. Then
set to the desired control plan by selecting
2:SCAN
OPTION
/
2:TRUNK
- select bank number - /
:CNTRL
CH ONLY
.
You must choose one of 4 frequency plans (only when 800
MHz systems is selected) before you begin to Control
Channel Trunk. The default, Plan 1, is the most common.
Read the description of the Plans below for details on which
may apply for you.
PLAN 1
: Use Plan 1 if the last three digits of ALL the
frequencies in use end in one of the following three digits:
125, 375, 625, or 875 (example: 856.1125, 860.7375,
859.6625, 855.8875).