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MM-008212-001, Rev. A
32
8 OPENSKY OPERATION
Once an OpenSky system has been selected from the available systems on your P5300 series portable
radio, the characteristics described in the following sections will govern operation.
8.1 CONTROLS
The P5300 portable radio features two rotary control knobs, an emergency button, and a dual-position
A/B switch located on the top of the radio. Refer to Figure 7-2: Top View. The Push-To-Talk (PTT)
button and two option
buttons are located to the left side of the radio keypad, see Figure 7-3: Side View.
The front m
ounted keypad of the P5370 “System” model has 15 buttons and the P5350 “Scan” model has
six buttons. Refer to Figure 7-5 and Figure 7-4, respectively.
8.1.1 Buttons and Knobs
The function of the button and knob controls will vary depending on the mode of operation. The primary
functions of the button and knob controls when in the OpenSky mode of operation are listed in the
following paragraphs.
POWER
ON-OFF
VOLUME KNOB
Applies power to the radio and adjusts audio volume.
Rotating the control clockwise applies power to the radio. A single alert tone (if
enabled through programming) indicates the radio is operational.
Rotating the control clockwise increases the volume level. While adjusting the
volume the display will momentarily indicate the volume level (i.e. VOL=31). The
volume range is from a minimum programmed level of zero (displayed as MUTE in
the display) up to 40, which is the loudest level.
VOICE GROUP
SELECTION
KNOB
Used to select voice groups when operating within an OpenSky system. This is a 16-
position rotary knob.
A mechanical stop, which can limit the number of positions accessed, is shipped
with the radio but must be installed. To install the mechanical stop, remove the
voice group selection knob, loosen the set screw on the voice group selection knob
metal base (using a 1.27mm hex wrench), and remove the voice group selection
knob metal base. Replace the 16 channel ring with the channel stop ring located at
the desired channel. Re-install the voice group selection knob metal base, tighten the
set screw, and re-install the voice group selection knob.
EMERGENCY
BUTTON
Press to declare an emergency. Press and hold for three seconds to clear emergency.
PTT BUTTON
The Push-To-Talk button must be pressed before voice transmission begins.
SIDE OPTION
BUTTON 1
SIDE OPTION
BUTTON 2
Scrolls UP or DOWN thru available items within a sub-menu, such as available talk
groups, pre-programmed speed dial numbers, canned alert messages, etc.
8.1.2 Keypad
The keys on the keypad have special functions and are labeled using a symbol or abbreviated word
describing its primary function. Numeric entry is a secondary function of the keys. Each key is described
in Table 8-1.