User's Manual

Operation DMH Series VHF Radio
BK RADIO Page 3-15
to the priority channel and holds for the duration of the transmission.
To reply to a message heard on the priority channel, press the PTT switch. The radio
transmits only on the priority channel when Priority Scan is on. Once activity has
ceased on the priority channel, the radio returns to the receive channel on the
Channel Selector knob.
3.11.5.1 PRIORITY MODE C WITH SCAN
With Priority Scan and Channel Scan on, the radio scans until it locks on to an active
channel. The radio continues to sample the priority channel while listening to the
active channel. If activity occurs on the priority channel, the radio overrides the active
scan channel, changes to the priority channel, and holds for the duration of the
transmission.
To reply to a message heard on the priority channel, press the PTT switch. The radio
transmits only on the priority channel when Priority Scan is on. Once activity has
ceased on the priority channel, the radio returns to scan operation.
3.11.6 CHANGE THE PRIORITY 1 CHANNEL
The fixed Priority 1 channel can be permanently set or can be changeable. If the
radio has a changeable priority channel, use the following steps to make this change.
1. Turn Scan and Priority Scan off.
2. Turn the Channel Selector knob to the channel you want to enter as the new
Priority 1 channel.
3. Press and hold the [PRI] button for more than 1 second. A short beep sounds
and PR appears in the display, indicating that the displayed channel is now the
priority channel.
NOTE: If the radio is programmed for Dual Priority operation, only Priority 1
channel can be changed with the [PRI] button.
NOTE: A channel can be the priority channel even if it is on the Scan List. Due
to multiple sampling of the same channel, however, maximum
performance occurs when the priority channel is not on the Scan List.
3.12 UNIT-TO-UNIT CALL
P25 Unit IDs allow for Unit-To-Unit calls when the radio is operating in Digital Mode.
The microphone’s [*] key must be enabled by radio programming to allow this mode
of operation. To view the radio’s ID, press and hold the [*] key while not in Unit-To-
Unit Mode. (Unit-To-Unit Mode is indicated by a phone icon in the upper right corner
of the display). Channels programmed for analog only operation will not be able to
transmit or receive Unit-To-Unit calls.
3.12.1 UNIT-TO-UNIT MODE
When the radio is in Unit-To-Unit Mode, all scanning functions will be disabled. The
radio will receive and transmit on the Ready-to-Transmit (RTX) channel only.
Depending on programming, the RTX channel can be the main channel, a held scan