– 5–10 –
Uplink frequencies for the standard GSM 900 band (0 = ARFCN = 124) can be calculated as follows:
Uplink frequency = 935 MHz + (ARFCN x 0.2 MHz) e.g. for CH55
935 MHz + (55 x 0.2 MHz)
= 935 MHz + (11 MHz)
= 946 MHz
■
GSM 1800
Uplink frequencies for the GSM 1800 band can be calculated as follows:
Uplink frequency = 1805 MHz + ((ARFCN - 511) x 0.2 MHz) e.g. for CH512
1805 MHz + ((512 - 511) x 0. 2MHz)
= 1805 MHz + (0.2 MHz)
= 1805.2 MHz
■
GSM 850
Uplink frequencies for the GSM 850 band (128 = ARFCN = 251) can be calculated as follows:
Uplink frequency = 869 MHz + ((ARFCN - 127) x 0.2 MHz) e.g. for CH185
869 MHz + ((185 - 127) x 0. 2MHz)
= 869 MHz + (11.6 MHz)
= 880.6 MHz
The downlink frequencies for the GSM 850 band are as follows:
CHANNEL
NUMBERS
DOWNLINK FREQUENCIES
128 - 132
133 - 137
138 - 142
143 - 147
148 - 152
869.200
870.200
871.200
872.200
873.200
869.400
870.400
871.400
872.400
873.400
869.600
870.600
871.600
872.600
873.600
869.800
870.800
871.800
872.800
873.800
870.000
871.000
872.000
873.000
874.000
153 - 157
158 - 162
163 - 167
168 - 172
173 - 177
874.200
875.200
876.200
877.200
878.200
874.400
875.400
876.400
877.400
878.400
874.600
875.600
876.600
877.600
878.600
874.800
875.800
876.800
877.800
878.800
875.000
876.000
877.000
878.000
879.000
178 - 182
183 - 187
188 - 192
193 - 197
198 - 202
879.200
880.200
881.200
882.200
883.200
879.400
880.400
881.400
882.400
883.400
879.600
880.600
881.600
882.600
883.600
879.800
880.800
881.800
882.800
883.800
880.000
881.000
882.000
883.000
884.000
203 - 207
208 - 212
213 - 217
218 - 222
223 - 227
884.200
885.200
886.200
887.200
888.200
884.400
885.400
886.400
887.400
888.400
884.600
885.600
886.600
887.600
888.600
884.800
885.800
886.800
887.800
888.800
885.000
886.000
887.000
888.000
889.000
228 - 232
233 - 237
238 - 242
243 - 247
248 - 251
889.200
890.200
891.200
892.200
893.200
889.400
890.400
891.400
892.400
893.400
889.600
890.600
891.600
892.600
893.600
889.800
890.800
891.800
892.800
893.800
890.000
891.000
892.000
893.000
Table 5.5
Содержание EBG60 - CELL PHONE
Страница 19: ... 5 2 5 1 2 RF Function Block Figure 5 1 RF Function Block Diagram ...
Страница 35: ... 5 18 5 15 POWER SUPPLIES 5 15 1 Introduction ...
Страница 77: ... 8 19 Modify Cable lose ...
Страница 89: ... 11 1 11 LAYOUT DIAGRAMS 11 1 Main PCB ...
Страница 90: ... 11 2 11 2 Key PCB ...