User Guide

RH-37
System Module Nokia Customer Care
Page 48 Nokia Corporation Issue 1 07/04
General specifications of the transceiver
Frequency concept
The RF frequency plan is shown below. The VCO operates at the channel frequency multi-
plied by two or four depending on the frequency band of operation. This means that the
modulated signals from baseband are directly converted up to the transmission fre-
quency and the received RF signals directly down to the baseband frequency.
Parameter Unit
Cellular System GSM900, GSM1800, GSM1900
Modulation schemes GMSK, 8-PSK
RX Frequency Band GSM900: 925 … 960 MHz
GSM1800: 1805 ... 1880 MHz
GSM1900: 1930 … 1990 MHz
TX Frequency Band GSM900: 880 … 915 MHz
GSM1800: 1710 ... 1785 MHz
GSM1900: 1850 … 1910 MHz
Output Power GMSK GSM900: +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 GSM900: +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 GSM 900: 45 MHz
GSM 1800: 95 MHz
GSM 1900: 80 MHz
Number of RF Channels GSM 900: 174
GSM 1800: 374
GSM1900: 299
Channel Spacing 200 kHz (each band)
Number of TX Power Levels
GMSK
GSM 900: 15
GSM 1800: 16
GSM 1900: 16
Number of TX Power Levels
8-PSK
GSM 900: 12
GSM 1800: 14
GSM 1900: 14
Sensitivity, static channel
(+25°C)
GSM 900: -102 dBm
GSM 1800: -102 dBm
GSM 1900: -102 dBm
Frequency Error, static channel < 0.1 ppm
RMS Phase Error < 5.0 °
Peak Phase Error < 20.0 °