Nokia 6020b Service Manual

Issue 1 03/2005

COMPANY CONFIDENTIAL

45

Copyright © 2005 Nokia. All Rights Reserved.

RM-31
7 - System Module

Nokia Customer Care

■ 

Cellular System

GSM850, GSM1800, GSM1900

Modulation schemes

GMSK, 8-PSK

RX Frequency Band

GSM850: 869 … 894 MHz
GSM1800: 1805 ... 1880 MHz
GSM1900: 1930 … 1990 MHz

TX Frequency Band

GSM850: 824 … 849 MHz
GSM1800: 1710 ... 1785 MHz
GSM1900: 1850 … 1910 MHz

Output Power GMSK

GSM850: +5 … +33 dBm (3.2 mW … 2 W)
GSM1800: +0 … +30 dBm (1.0 mW … 1 W)
GSM1900: +0 … +30 dBm (1.0 mW … 1 W)

Output Power 8-PSK

GSM850: +5 … 27 dBm (3.2 mW … 0.5 W)
GSM1800: +0 … 26 dBm (1.0 mW … 0.4 W)
GSM1900: +0 … 26 dBm (1.0 mW … 0.4 W)

Duplex Spacing

GSM850: 45 MHz
GSM1800: 95 MHz
GSM1900: 80 MHz

Number of RF Channels

GSM850: 174 
GSM1800: 374
GSM1900: 299

Channel Spacing

200 kHz (each band)

Number of TX Power Levels 
GMSK

GSM850: 15
GSM1800: 16
GSM1900: 16

Number of TX Power Levels 
8-PSK

GSM850: 12
GSM1800: 14
GSM1900: 14

Sensitivity, static channel
(+25°C)

GSM850: -102 dBm
GSM1800: -102 dBm 
GSM1900: -102 dBm

Frequency Error, static channel

< 0,1 ppm

RMS Phase Error

< 5.0°

Peak Phase Error

< 20.0°