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SECTION 3 – OPERATING INSTRUCTIONS
3.1
INTRODUCTION
3.1.1
Transceiver Model TiL-91-DE P/N 901006-2
The Transceiver is a microprocessor controlled VHF/AM transceiver operating over the entire
band of 117.975 to 138.000 MHz in 25 kHz steps. The transceiver will store 10 or 25 user
selected frequency channels in addition to the resident emergency channel of 121.500 MHz. 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. Frequency Selection, Storage, Recall,
Channel Scan, Search, and Toggle modes are all selected by the 12 key keypad. The current
operating frequency is displayed on a backlit liquid crystal display (LCD).
3.1.2
Scan, Search, and Toggle Modes
1.
SCAN MODE - In Scan Mode, the transceiver cycles through the preset Channel
Frequencies and locks on to the first channel received in scan sequence. Audio is
enabled for 5 seconds for operator identification. Pressing the Press to Talk switch exits
the scan mode. If there is no operator action then transceiver operates in the scan
sequence continuously.
2.
SEARCH MODE - In Search mode the transceiver cycles through the preset Channel
Frequencies and locks on to the first channel received in the scan sequence and normal
operation is resumed.
3.
TOGGLE MODE - In toggle mode the transceiver alternates between the current channel
selection and the previous channel selected.
This section includes a functional description of each switch, control, indicator and connector
located on the front and rear panels of the 91-DE mobile transceiver, including the PRESS TO
TALK switch located on the microphone. Operating instructions for transmit/receive and the
special functions are also included.
3.1.3
TECHNICAL SUMMARY
A summary of electrical, operational, mechanical and physical characteristics of the transceiver is
provided in Table 3.1.
3.2
OPERATOR'S SWITCHES, CONTROLS AND INDICATORS
A view of the front and rear panels of the 91-DE Transceiver is given in Figure 3.1. A functional
description of each of the operator's switches, controls and indicators, and the microphone
PRESS TO TALK switch, is given in Table 3.1, Operator's Switches, Controls and Indicators and
in Table 3.2, Channel/Function Selector Keypad.
TMS-150 91-DE Installation & Operating Instructions
TECHNISONIC INDUSTRIES LIMITED
www.til.ca
3-1
TiL 94RE146 Rev E
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