4-7
4.3
FRONT PANEL KEYPAD OPERATION
All frequencies within the range of 117.975 MHz to 138.000 MHz (8.33 or 25 kHz spacing) can be
stored on channels 00 to 25. Channels and feature settings are stored in non-volatile memory.
Removal of external power source or batteries will not erase stored channels, key "Beep" set up, Keypad
and LCD display lighting set up, 90 second Tx time-out set up or Tx Inhibit selections. The SCAN and
SEARCH features are NOT stored in memory when unit is turned off. Emergency channel 121.500 is
permanently stored as an 27th Channel. Refer to paragraph 4.3.6 for details. Table 4-2 Provides a
Quick Reference of the CHANNEL/FUNCTION SELECTOR KEYPAD Functions.
TABLE 3-3 CHANNEL/FUNCTION SELECTOR KEYPAD
KEYPAD
FUNCTIONAL DESCRIPTION
DIGITS 00 to 25Functions as a digits 00 - 25 for frequency entry and channel
selection Recalls Channel when preceded by "R" key.
* Stores Channel when preceded by "E" key.
* Selects Special Function when preceded by "E" key.
"R"
Recalls stored channel frequency when followed by digits 00 to 25.
Recalls last frequency displayed when followed by the "E" key.
"E"
* Stores a frequency to channel when followed by digits 00 to 25.
Enables Special Features (See Below).
"E","0"
Recalls permanently stored emergency channel 121.500 MHz.
"E","1"
Selects Automatic Lighting of Keypad and LCD Display.
"E","2"
Selects Continuous Lighting of Keypad and LCD Display.
"E","3"
Disables Keypad and LCD Display Lighting.
"E","4"
Selects SEARCH mode.
"E","5"
Selects SCAN mode.
"E","6"
Enables 90 second Tx time-out protection.
"E","7"
Disables 90 second Tx time-out protection.
"E","8"
Toggles Key "Beeps" ON and OFF.
"E","9"
Disables/Enables transmit on selected frequency.
"R","E"
Toggles between currently displayed frequency and the previously displayed
frequency.
* If key "E" followed by two digits (must be digits 00-25) is pressed within 5
seconds of Keyboard entry of a valid frequency then the frequency is stored
in the channel specified. If 5 seconds has elapsed then key "E" followed by a
digit selects the Special Function specified.
Summary of Contents for TiL-91-DE/8.33
Page 29: ...4 14 Figure 4 3 Fixed Channel Jumper Locations...
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