Operating instructions

Operation DMH Series VHF Radio
Page 3-14 BK RADIO
Talkback Scan will not work if Priority Scan is also on and your radio is programmed
to always transmit on the Priority 1 channel.
3.11.6 CHANGE THE SCAN LIST
The radio can be programmed to enable the user to add or remove channels from the
scan list. If user changes are enabled, follow these steps to change the scan list:
1. Turn Scan and Priority Scan off.
2. Select a channel to be added or removed from the scan list by turning the
Channel Selector knob. If the channel is already on the scan list, SCN appears in
the display.
3. Press and hold the [SCN] button for more than 1 second to toggle the channel on
or off the scan list.
3.11.7 GROUP SCAN
Channels on each "Channel Scan List" in groups on the "Group Scan List" are
scanned sequentially. The selected group is always scanned when Group Scan is
enabled, even if that group is not on the Group Scan List.
When Group Scan is enabled, the following features are disabled:
• Priority Scan
• Dual Priority Scan
• User-Selected Channel Guard
• Nuisance Channel Delete
3.12 PRIORITY SCAN
Priority Scan enables the radio to receive on any channel while monitoring for a
message on the designated priority channel(s). The radio samples each priority
channel at a preset rate (.25-2.0 seconds) regardless of activity on any other
channel. Priority Scan operates only while the radio is not transmitting and can be
used in combination with scan operation.
When Priority Scan is on, the PR annunciator illuminates, and the display flashes
SCN (alphanumeric mode) or two flashing bars (numeric mode). If a message is
received on a priority channel, the Priority indicator illuminates, and the radio receiver
locks onto that channel for the duration of the transmission, unless a higher priority
channel interrupts.
Priority Scan can be used in combination with Channel Guard with:
• Priority Scan on (arrow appears above PRI button)
• Channel Guard Disable off (no arrow above CG button)
• The Priority Channel(s) programmed with Channel Guard