Midland Radio SYN-TECH III P25 - Manual (Page 13)

Syn-Tech III P25 Portable Radio
OPERATION MANUAL
680-090-2040
Version 6.0
http://www.midlandradio.com
5
3.2 Button and Key Functions
Below is a brief description of the default operation of each button or key. For more
details of each function refer to the operation section of this manual. Many of the
functions may be reassigned or disabled by radio programming or unavailable because
of the current analog/digital mode selection. Many of the buttons have a short press, or
press and release function, and a long press, or press and hold function. The short
press function is performed if the button is pressed for less than one second, and the
long press function is performed if the button is pressed for more than one second.
3.2.1 Channel Switch
The channel switch provides direct access to channels 1-16 in the current zone. In the
sixteenth position, the up/down and direct channel entry modes may be available. If the
channel switch is in the sixteenth position, the radio will power on to last selected
channel. In any other position, the radio will power on to the switch-selected channel.
3.2.2 Emergency Call Button
The emergency button initiates emergency mode. The emergency function is only
available in digital mode. The emergency key must be pressed for a programmed
activation time. Once emergency mode is activated, the radio will switch to the
emergency channel and initiate five SBC emergency transmissions. The emergency bit
will be set on all user initiated digital transmissions until the emergency is cleared by a
long press of the keypad lock key or the radio is turned off.
3.2.3 Alpha-Numeric keypad
When the channel switch is in the sixteenth position, the alpha-numeric keypad may
provide direct channel select from standby mode. The alpha-numeric keypad also
generates DTMF tones while PTT is pressed on analog channels and enters alpha-
numeric characters within other functions.
Direct channel entry mode is only available if more than sixteen channels
are programmed in the zone.