Nokia 550 TRANSCEIVER 10c

PAMS Technical Documentation
Appendix 3 – Transceiver THF–10C
Chapter 2
TRANSCEIVER
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THF–10C
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CONTENTS
Introduction 2 – 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Description 2 – 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Block Diagram 2 – 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Modules 2 – 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Specifications 2 – 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transceiver General Specifications 2 – 4. . . . . . . . . . . . . . . . . . .
Transmitter Branch 2 – 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Branch 2 – 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RX Synthesizer 2 – 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TX Synthesizer 2 – 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exploded View of THF–10C 2 – 7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly Parts of THF–10C 2 – 8. . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List of TA1C SMD Variation Module 2 – 9. . . . . . . . . . . . . . . .
Technical Documentation
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Introduction

Functional Description
The transceiver electronics consist of UI module PCB and RF/system PCB. UI module is connected to system module with a connector. System and rf submodules are interconnected with PCB wiring. Unit can be connected to accessories with a bottom system connector, which includes charging and accessory control.
RF block is designed for a hand portable phone, which operates in NMT450 systems. Purpose of the RF module is to receive and demodulate radio fre­quency signal from the base station and to transmit a modulated RF signal to the base station.

Modules

Transceiver THF–10C 0501225
system module TA1C 0201044
software module 0240509
display module GN4 0200964
mechanics MTHF10 0261290
Swap transceiver 0501583

RF Characteristics

Characteristic Value / Comments
RX Frequency range 461.310...465.730 MHz TX Frequency range 451.310...455.730 MHz Channel spacing 20 kHz Number of channels 222 (222...1) TX Frequency deviation ≤± 3.75 kHz (± 4.05 kHz with 4 kHz supervisory signal) FFSK deviation
1200 Hz (”1” frequency) ± 2240 Hz
1800 Hz (”0” frequency) ± 3360 Hz
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Exploded View of THF–10C
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Assembly Parts of THF–10C
ITEM Q’TY CODE DESCRIPTION VALUE, TYPE
1 9457939 Window DMC00802 2 9457960 A–cover DMC00789 3 9790266 Power keymat DMC01040 4 9790267 Keymat DMC00788 5 5140037 Microphone 6 5140018 Buzzer 7 5140580 Speaker 8 0200964 UIF Module GN4 9 9540021 Shield DMD02660 M1 0201044 System/RF Module TA1C 11 9510373 Antenna Clip DMD02860 12 4350097 Power Amplifier 13 2 6190001 Screw M2x3.8 14 9790163 Volume keypad DMD000097 15 9457907 B–Cover DMC01027 16 0660140 Antenna – retractable 450–470 MHz 125mm 17 6 6190031 Screw M2x8 18 9380115 Type label 4D 21663 C
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Parts list of TA1C SMD VARIATION MODULE

(EDMS Issue 1.5) Code: 0201108
ITEM CODE DESCRIPTION VALUE TYPE
R420 1430786 Chip resistor 18 k 5 % 0.063 W 0402 G420 4352939 Vco 450–459mhz 4.5v 12ma tx nmt G520 4352943 Vco 416–424mhz 4.5v 10ma rx nmt Z320 4510135 Saw filter 464.5+–3 M /4DB 5.2x5.2 Z640 4512033 Dupl 451.3–455.8/461.3–465.6mhz N620 4350097 IC, pow.amp. 6 V 3 W
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