TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TAF-550 Installation & Operating Instructions
TiL 96RE187 Rev D
3-9
3.4
91-DE FRONT PANEL KEYPAD OPERATION
Note: The TiL-91-DE transceiver was available in either 10 or 25 channel versions until July 2012.
The 25 channel version can be identified by ‘25’ or ‘1283T’ on the option label on those units. All
units manufactured after July 2012 are 25 channel only.
All frequencies within the range of 117.975 MHz to 138.000 MHz in steps of 25 kHz can be stored
in one of the available memories. Channels and feature settings are stored in non-volatile
memory. Removal of external power source or batteries will not erase stored channels or
configurable features. Emergency channel 121.500 is always available as described below. Refer
to paragraph 3.4.6 for details. Table 3.2 provides a Quick Reference of the
CHANNEL/FUNCTION SELECTOR KEYPAD Functions.
TABLE 3.2
CHANNEL/FUNCTION SELECTOR KEYPAD
KEYPAD FUNCTIONAL
DESCRIPTION
DIGIT 0-9
For direct frequency entry. If followed only by the ‘E’ key the transceiver will tune to
that frequency but nothing will be saved in memory. If followed by ‘E’ and one digit
(for 10 channel radios) or two digits (for 25 channel radios) the transceiver will tune
to that frequency and save to the memory selected.
"R"
Recalls stored channel frequency when followed by digits 0 to 9 or 00 to 25.
Recalls last frequency displayed when preceded by the "E" key.
"E"
* Stores a frequency to channel when followed by digits 0 to 9 or 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.
"E","R"
Toggles between currently displayed frequency and the previously displayed
frequency.
Note: There is a 5 second keypad time out. If while entering a frequency or setting a function, no
key has been pressed within 5 seconds, the function will be aborted and the display will return to
the previous frequency.
