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PAMS Technical Documentation
Appendix 5 – Transceiver THF–10L
Chapter 2
TRANSCEIVER
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THF–10L
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Transceiver
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–10L 2 – 7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly Parts of THF–10L 2 – 8. . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List of TA1L SMD Variation Module 2 – 9. . . . . . . . . . . . . . . .
Technical Documentation
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THF–10L
Technical Documentation
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–10L 0501228
• system module TA1L 0201045
• software module 0240509
• display module GN4 0200964
• mechanics MTHF10K 0261449
Transceiver
Swap transceiver 05015
RF Characteristics
Characteristic Value / Comments
RX Frequency range 411.675...415.850 MHz
TX Frequency range 421.675...425.850 MHz
Channel spacing 25 kHz
Number of channels 168 (1...168)
TX Frequency deviation ≤± 4.7 kHz (± 5 kHz with 4 kHz supervisory sig-
nal)
FFSK deviation
• 1200 Hz (”1” frequency) ± 2800 Hz
• 1800 Hz (”0” frequency) ± 4200 Hz
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Transceiver
Exploded View of THF–10L
Technical Documentation
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THF–10L
Technical Documentation
Transceiver
Assembly Parts of THF–10L
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 0200960 System/RF Module TA1
11 9510373 Antenna Clip DMD02860
12 4350109 Power Amplifier
13 2 6190001 Screw M2x3.8
14 9790163 Volume keypad DMD000097
15 9457907 B–Cover DMC01027
16 0660156 Antenna – retractable 411–443 MHz
17 6 6190031 Screw M2x8
18 9380115 Type label 4D 21663 C
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Transceiver
Technical Documentation
Parts list of TA1L SMD VARIATION MODULE
(EDMS Issue 1.6) Code: 0201107
ITEM CODE DESCRIPTION VALUE TYPE
R420 1430784 Chip resistor 15 k 5 % 0.063 W 0402
G420 4350043 Vco 411–419mhz 4.5v/12ma tx nmt
G520 4350041 Vco 376–384mhz 4.5v/10ma rx nmt
Z320 4511007 Saw filter 423.8+–2.1 M 5.2x5.2
Z640 4512037 Dupl 411.6–415.8/421.6–425.8mhz
N620 4350109 IC, pow.amp. 6 V 3 W
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