User's Manual

1-1

SECTION 1

GENERAL DESCRIPTION

1.1 INTRODUCTION

This publication provides general information on the VHF/AM Single Channel Transceivers,

Model TSC-4400, Part No. 011211-1, manufactured by Technisonic Industries Limited. This

document covers the configuration of this equipment that utilizes either of the following remote

control cards; p/n’s 923051-1 (standard) or 943180-1 (supplied upon request). These cards

allow the transceiver to be remotely controlled over 600 ohm dedicated lines using a variety

of keying methods.

The Model TSC-4400 Transceiver is a simplex, single channel, fixed frequency transceiver

operating over the frequency range of 118.000 MHz to 138.000 MHz. These units are

intended for base station operation in an air traffic environment. These systems can operate

from AC power or external DC power in local and remote operating modes.

1.2 DESCRIPTION

The TSC-4400 is a fully pre-programmable 50 Watt transceiver. It can be configured for 2 Wire

and 4 Wire remote operation with a variety of remote keying methods (with 923051-1

standard card). The transceiver consists of a Power Supply Module, Mother Board, a Remote

Control Board and a 50 Watt RF Amplifier Module.

To improve the rejection of interfering signals, dual conversion receiver technology has been

incorporated on the Transmitter/Receiver (Module A1) board used in the TSC-4400. The

second IF is 455kHz using a ceramic filter, which is immune to high energy ringing. The dual

conversion module also has a second local oscillator, second mixer and ceramic filter. The first

local oscillator is the original VCO.

TABLE 1-1 TSC-4400 CONFIGURATION

System Motherboard w/

25 pin connector

AC Power

supply module

RF Amplifier Remote

Control Cards

TSC-4400 033588-1 043603-1 Model PA-50

043604-1

P/N 923051-1

P/N 943180-1

(upon request)