Tyco Electronics P5300 Benutzerhandbuch

25 

The functions of the button and knob controls 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.  The functions while in other modes are discussed in later sections. 

 

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. 
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=40). 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. 

Used to select voice groups/channels. This is a 16-position rotary 
knob.  

Note:    A mechanical stop, used to limit the number of accessible 
positions, 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. 

Used to declare an emergency by pressing and holding for a 
programmed duration.  

The Push-To-Talk button must be pressed before voice 
transmission begins. 

Scrolls UP or DOWN thru available items within a sub-menu 
(available talk groups, pre-programmed speed dial numbers, 
canned alert messages, etc.).