Sony Ericsson T20e manual Performance And Technical Characteristics, Dimension GSM 900/E-GSM, Gmsk

Performance And Technical Characteristics

Dimension	GSM 900/E-GSM 900	GSM 1800
Frequency range	TX: 880 – 914 MHz	TX: 1710 – 1785
	RX: 925 – 959 MHz	RX: 1805 – 1880
Channel spacing	200 kHz	200 kHz
Number of channels	174 Carriers *8 (TDMA)	374 Carriers *8 (TDMA)
Modulation	GMSK	GMSK
TX Phase Accuracy	< 5º RMS Phase error (burst)	< 5º RMS Phase error (burst)
Duplex spacing	45 MHz	95 MHz
Frequency stability	+/- 5 ppm (downlink RX)	+/- 175 Hz (downlink RX)
Voltage operation (nominal)	3.0 Volts	3.0 Volts
Transmitter RF power out-	33 dBm Class 4 (2W peak)	30 dBm Class 1 (1W peak)
put
Transmitter Output imped-	50 Ω	50 Ω
ance
Transmitter Spurious emis-	< -36 dBm up to 1 GHz	< - 30 dBm
sion	< -30 dBm over 1 GHz	(according to GSM spec.)
	(according to GSM spec.)
Receiver RF level	Better than – 102 dBm	-100 dBm
Receiver RX Bit error rate	< 2%	< 2.43%
		*) No DTX activated

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