8
CONTROLS
This section describes the buttons, keys and rotary knobs used to control the
Orion Scan and System Model radios. All functions and controls of the
Scan radio operate the same as the corresponding functions and controls on
the System radio. The Scan radio is equipped with a 4-button keypad and
the System radio is equipped with a 16-button keypad.
Many of the control buttons and keys have or c an b e p ro gram med to have a
primary function and a secondary function. The SCAN button can be
programmed (as a secondary function) to toggle the keypad keys between
their primary function and their secondary function.

POWER ON-OFF VOLUME KNOB

This rotary Knob applies power to the radio and adjusts the
receiver volume. Rotating the control clockwise out of
detente applies power to the radio. A single alert tone
sounds (if enabled through programming) to indicate the
radio is operational.
Rotating the control clockwise increases the volume level. Minimum
volume levels may be programmed into the radio to prevent missed calls
due to a low volume setting. While adjusting the volume, the display will
momentarily indicate the volume level (i.e. VOL = 31). The volume range
is from a minimum level of zero (displayed as OFF in the display) up to 31
which is the loudest level.

SYSTEM/GROUP CHANNEL KNOB

This rotary knob selects the systems or groups/channels,
depending upon programming. This 16 position knob has
no stop. See SYSTEM/GROUP/CHANNEL
SELECTION for more details.