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