TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TBS-150, 250, 350 Installation & Operating Instructions
TiL 92RE122 Rev L
1-4
1.2.5 Remote Control Boards
1. Line Interface Board P/N 923051-1 (TLI-203)
Provides remote control transceiver operation on 2 wire or 4 wire 600 ohm lines. This board
can be configured to key the transmitter using a 2175 Hz* continuous tone (see below),
plus/minus DC Voltages, ground keying and internal or external DC (15 mA) current loop
keying. Transmit and Receive audio is user selectable for two wires or four wires. *Crystals
for tone frequencies other than 2175 Hz may be obtained by special order (i.e. 2380 Hz).
An adjustable (30-300 second) Tx time out function is provided on this board.
2. Line Interface Board P/N 943180-1 (TLI-180)
Provides remote control transceiver operation on 2 wire dedicated 600 ohm lines utilizing
the EIA multi-tone keying format found in the Land Mobile Industry. A high level 2175 tone
followed by a 1950 Hz guard tone and then a low level 2175 Hz continuous tone is utilized
to key the transceiver. The 943180-1 board can also be jumper strapped for standard
aeronautical 2175 Hz continuous tone operation. DC (15mA) current loop and ground
keying is also supported. However this board does not support 4 wire operation. An
adjustable (30-300 second) Tx time out function is provided on this board.
NOTE
P/N 923051-1 is the default board supplied in all units. The EIA multi-tone board P/N
943180-1 must be special ordered. To determine which remote card your TBS-series base
station has installed, the Configuration label on the back of the chassis should be consulted.
1.2.6 Microphone P/N 861902-1
An illustration of the Microphone Assembly Part Number 861902-1, is included in Figure
1.1. The Assembly P/N 861902-1 consists on microphone P/N 861901-1 and microphone
retaining bracket P/N 863905-1. The unit is a rugged hand-held microphone housed in a
high impact plastic case. The dynamic microphone is a noise cancelling type with a two-
stage preamplifier, press-to-talk switch, and a retractable three-core cable terminated by a
three-pin, male contacts, connector which mates with the MIC/PTT connector located on
the front panel of the transceiver. The microphone dc supply for the microphone is supplied
by the transceiver. The microphone bracket can be mounted on the left or right side of the
Base Station as required.
1.2.7 Antenna
This unit is designed for use with a 50 ohm impedance antenna (not supplied). A 50 ohm
RF N type connector (BNC available as an option) is provided on the rear of the unit for
interfacing with an antenna.
