gsm 1800 channels Duplex spacing of 45 MHz is used. Guard bands 100 kHz wide are placed at either end of the range of frequencies. In some countries the GSM-900 band has been extended to cover a larger frequency range .
Read moregsm 1800 channels Duplex spacing of 45 MHz is used. Guard bands 100 kHz wide are placed at either end of the range of frequencies. In some countries the GSM-900 band has been extended to cover a larger frequency range .
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