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• When using the Channel Select knob, wrap-around to the lowest zone/channel occurs
after the last channel in the highest programmed zone is displayed and vice versa. For
example, if Zone 1/Channel 5 is the highest programmed channel, wrap-around occurs
after Zone 1/Channel 16 is displayed if the "Programmed Channels Only On Display" is
not selected. If "Programmed Channels Only on Display" is selected, the wrap around
occurs at Channel 5.
• When an unprogrammed channel is displayed, the sequential channel number and
"UNPROGRAMD" are alternately displayed.
• If an invalid channel number is entered using the 0-9 keys, or the Channel Select option
switch is pressed with "UNPROGRAMD" displayed, an error tone sounds,
"INVALID" is briefly displayed, and the displayed channel does not change.
3.1.8
The user can program a menu item, soft button item (Lightning Control Head only), or
function button, for squelch adjust. While on a conventional analog channel without
emergency or scan active, the user can select the programmed button or menu item for
squelch adjust. The current squelch setting will show on the display. Using the up and
down navigation buttons, or turning the rotary knob clockwise or counter-clockwise on
the mobile radio, the user can adjust the squelch setting to a desired level from -7 to +7.
Increasing the value towards +7 causes the squelch to open sooner for weaker signals
while decreasing towards -7 has the opposite effects. Pressing the select button will store
the new squelch setting and return the user to the main display.
The squelch level is preset and may not require readjustment. However, if the squelch
threshold needs to be changed on a conventional analog channel, it can be changed in the
same way as though using keypad programming if available (see Section 5.14).
Note
The Keypad programming feature is available to Federal Government users only.
3.1.9
Users can build a virtual zone consisting of channels already present in the radio. They can
add or remove channels from zones while the radio is running, allowing changes to be
made at runtime.
The Zone Edit feature can be programmed. It can be toggled on or off on a per-zone basis.
When enabled, it allows you to copy and delete existing channels from a zone.
Only channels within Zone Edit enabled zones can be selected for editing.
• Zone Edit mode can be entered via button press or the menu.
Draft 02 - Sep 1 2015
• A momentary button press performs channel copy.
Viking Mobile Radio Operating Manual
Setting Squelch Control
Zone Edit
General Operation
3-9
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