User Guide

After Sales
Technical Documentation
Transceiver
THA–41S
Page 2–3
Original, 12/95
Introduction
The THA–41S transceiver, together with battery pack BTH–8SM ensures
all the desirable features e.g. alphanumeric display and keypad,
menu–control, shortcode memory facility with 98 locations, retractable
antenna etc. are available in a very small and light cellular handportable.
The transceiver consists of two modules: a system module and a display
module.
System Module
The system module performs the following functions:
 received audio processing
 transmitted audio processing
 data reception and transmission
 channel selection
 RF signal reception and detection of the modulated information to
baseband
 modulation of the baseband microphone and data signal to the
selected channel and amplification of the signal to the selected
power level
The system module comprises a microprocessor, which controls the main
functions of the phone, and parts of the HW dependent user interface
(earphone, microphone, and alarm–beeper).
Display Module
The display module comprises a supertwist–LCD, a display driver and
volume control contacts.