Operating instructions

Operation DMH Series VHF Radio
BK RADIO Page 3-11
PRI Priority Scan
Press the [PRI] button to start or stop priority scanning. The PR annunciator
and the flashing SCN annunciator appear on the display. If changes to the
Priority 1 channel are allowed to make the current channel the fixed Priority 1
Channel, turn Scan and Priority Scan off, then press the [PRI] button and
hold it down for 1 second or more.
GRP Group Select
Press the [GRP] button to toggle between Group Select and Channel Select
Modes. Press the [GRP] button for Group Select Mode. Turn the Channel
Selector knob to select a group. Return to Channel Select Mode by waiting 5
seconds, or by pressing the [GRP] button one time (numeric mode) or two
times (alphanumeric mode). After selecting a group in Alphanumeric Mode,
press the [GRP] button one time to display the Group Label, and a second
time to return to Channel Select Mode.
SQL Squelch Adjust
Press the [SQL] button to toggle between Squelch Adjust and Volume Adjust
Modes.
Press the [SQL] button for Squelch Adjust Mode. Turn the Volume knob to
adjust the squelch setting. Turning the knob counter-clockwise tightens the
squelch setting, allowing only stronger signals to open the squelch and be
heard. In the absence of a held channel, the receiver will be tuned to the
main channel. Guard qualification will be disabled during squelch adjustment.
Return to Volume Adjust Mode by waiting 5 seconds, or by pressing the
[SQL] button again.
Pressing the [SQL] button and holding for more than 1 second sets the
squelch to its factory preset value.
TA Repeater Talk Around
Press the [TA] button to turn Repeater Talk Around on or off. When TA is
on, the radio transmits on the receive frequency of the selected channel,
bypassing or “talking around” the repeater. This function may be used on
any channel that is programmed to a frequency pair (repeater channel).
CG Channel Guard Disable
Press the [CG] button to disable or enable Channel Guard operation. On
analog channels, the radio reverts to carrier squelch. On digital channels,
the radio will unmute when a digital signal with any NAC is detected. An
arrow on the display points to the CG button when Channel Guard is
disabled. When Channel Guard is enabled, a message is heard only when
the proper Channel Guard is received. Transmit Channel Guard generation
is unaffected. The CG button may also be used to override Busy Channel
Lockout, if Busy Channel Override is installed.