OPERATION
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7
CHANNEL SCAN OPERATION
Channel scanning allows you to listen to broadcasts on your
radio channels. The JBS /
PBS “Display-Series’ base station will
scan all channels programmed into the radio except the NOAA
Weather Channel.
How Scanning Works
Using the Channel Selector button, select the Scan channel. The
base station sounds the Scan Beep, and then repeatedly checks
each channel in the scan list. The channel display will show the
channel numbers as they are scanned.
When receiving a call on a channel being scanned, the base
station will stop scanning to let you hear communications on that
channel. After the transmission has ended the base station will
pause before it resumes scanning to allow you time to respond.
When transmitting from the Scan channel, the base station will
go to the last channel on which a signal was received, then
transmit. After you release the PTT the base station will pause
to allow time for a response, and then resume scanning.
Temporary Busy Channel Blocking
If one of the channels in the scan list is so busy that you want to
temporarily block it out, press the Channel Selector button while
the base station is stopped on the channel to be blocked and
hold it until scanning resumes. The blocked channel will now be
skipped in the scan list.
The blocked channel will be returned to the scan list if the base
station is turned off and then back on again, or when the radio
channel is changed using the Channel Selector button. The first
channel in the scan list cannot be blocked.
To turn Channel Scan On / Off see “How to Field Program
Radio Feature Codes” on page 15.
Last Channel Scanned Alert Tone
When changing channels with the Channel Selector button, an
alert tone will sound to indicate the last channel that received a
message when the radio was scanning. This will identify the
channel on which the last message was received, and allow
uninterrupted transmission on that channel without the
constraints of scanning. You can then press the Channel
Selector button to return to the scan channel.
Using the “Z” Button for Scan
The special feature “Z” button can be programmed to initiate
scanning. The UHF JBS-446D and PBS-446D base stations are
programmed f
or “Z” button Scan channel operation from the
factory.
To select the Scan Channel, press the “Z” button. The radio
sounds the Scan Beep, and scanning operation is initiated. The
Scan channel will not be accessible with the Channel Selector
button when the
base station is programmed for ‘Z” button Scan
channel operation.
To return to normal channel operation, press the Channel
Selector button and the base station will return to channel 1.
To temporarily block a busy channel while scanning, press the
“Z” button while the base station is stopped on the channel to be
blocked and hold it until scanning resumes. The blocked channel
will now be skipped in the scan list.
Priority Scanning (Optional)
The “Display Series” base station can be optionally programmed
for priority scanning. Priority Scan allows you to periodically
monitor a Priority Channel, even if the base station has stopped
on another channel. This will prevent missed calls on the primary
operating channel when in scan mode.
