TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TBS-150, 250, 350 Installation & Operating Instructions
TiL 92RE122 Rev L
3-1
SECTION 3 – TRANSCEIVER SET UP AND INSTALLATION 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. Current operating frequency is displayed on a backlit liquid crystal display
(LCD). Option 1 of Model Til-91-DE P/N 901006-2 has an internal DC to DC converter for
operation of an RF Power Amplifier in the 15 Watt and 25 Watt Base Stations.
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 the transceiver remains operating 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.
3.1.3 Technical Summary
A summary of electrical, operational, mechanical and physical characteristics of the
transceiver, are provided in Table 3.1.
3.2 OPERATOR'S SWITCHES, CONTROLS AND INDICATORS
A view of the front and rear panel is given in Figure 3.2. A functional description of each of
the operator's switches, controls and indicators, and the microphone PRESS TO TALK
switch, is given in Table 3.2, Operator's Switches, Controls and Indicators and in Table 3.3,
Channel/Function Selector Keypad.
This section includes a functional description of each switch, control, indicator and
connector located on the front and rear panels of the portable transceiver, including the
PRESS TO TALK switch located on the microphone. Operating instructions for
transmit/receive and the special functions are also included.
