E.F. Johnson Company LTR 98xx Operating Manual page 12

CONTROLS AND DISPLAY
Option Switches - The five front panel option switches can be
programmed by your system operator for the functions which follow.
Refer to the section indicated for more information on a function. The
key cap usually indicates the function controlled by the switch.
A/D - Scan list add/delete (see page 35)
CG - Call Guard squelch disable (see page 46)
EMER - Emergency switch (see page 24)
ENCPT - Encryption on-off (see page 24)
FCN - Function select (see following description)
HORN - Horn alert on-off (see page 26)
MON - Monitor mode on-off (see page 39)
AUX - Option select (see page 27)
PRI - Priority sampling on-off (see page 46)
SCAN - Scan on-off (see page 33)
STLH (AUX) - Stealth mode select (see page 29)
TA - Talk-around on-off (see page 45)
(Blank) - Not used (disabled)
FCN (Function) Switch - This switch (if programmed) selects the
following functions:
Menu Mode Select - Press FCN twice (see page 30)
Home Sys/Grp Select - FCN/press Select switch (see page 26)
Conv Squelch Set - FCN/rotate Select switch (see page 18)
Transmit/Busy Indicator - Indicates the following conditions:
Red - Transmitter keyed, normal power output
Orange - Transmitter keyed, power reduced because internal
temperature is high
Green - Busy conventional group (channel). Refer to "Conventional
Operation" on page 38 for more information.
Microphone Jack - Connection point for the microphone.
Microphone Push-To-Talk (PTT) Switch (Not Shown) - Push-button on
the microphone which is pressed to key the transmitter.
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