User's Manual
Operation DMH Series VHF Radio
BK RADIO Page 3-11
PA Public Address
Press the [PA] button to turn the Public Address system on or off. When PA
is on, pressing the microphone PTT switch causes audio to be routed to the
audio amplifier without enabling the transmitter.
ACC Accessory
Press the [ACC] button to turn the installed accessory on or off. Up to three
ACC buttons may be installed for different accessories.
3.10 SCAN OPERATION
3.3.1 Receive
Scan operates only while the radio is not transmitting. The radio checks for
signals on channels in the preset scan list, as well as the channel selected by
the Channel Selector knob.
When a signal is detected, scanning stops and the message is received. The
received channel is shown in place of the transmit channel.
Once the signal ends, the radio continues to monitor the channel for the
preset scan delay time before it resumes scanning.
3.3.1.1 Basic Scan
1. Press the SCN button to enable Scan (an arrow will appear above the
button).
2. If Priority Scan is enabled, press the PRI button to turn it off.
The display indicates Scan operation by flashing the SCN annunciator
(alphanumeric mode) or by two flashing bars (numeric mode).
3.10.1 SCAN CHANNEL GUARD CHANNELS
1. Press the SCN button to enable Scan (an arrow will appear above the button).
2. If the CG button has an arrow over it, press the CG button once to turn Code
Guard Disable off.
When a signal is detected, scanning stops while the radio checks for the proper Code
Guard value. If the signal contains the proper Code Guard value, the radio receives
the message. Otherwise, the radio resumes scanning immediately.
3.10.2 NUISANCE CHANNEL DELETE
With Channel Scan on and Nuisance Channel Delete enabled, pressing and holding
the [SCN] button for more than 1 second will temporarily remove a currently active
channel from the Scan List. If the radio is equipped with a keypad microphone,
pressing the [CLR] key while Scan is on will accomplish the same thing. Not all
microphones support these functions. Contact your dealer to determine which
features are available with your microphone and have been enabled in the radio.
When the radio is powered off and back on, the pre-programmed Scan List will be