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7. Block Diagrams
7-
1
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7 RF/BB Block Diagram
M
od
em
(B
CM
2
1331)
*G
S
M
85
0
R
x
:8
69
~
894
MHz
Tx
:8
24
~
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*G
S
M
90
0
Rx
:
925
~
960
MHz
Tx
:
8
80
~
915
MH
z
*D
C
S
R
x
:1
80
5
~
18
80M
H
z
Tx
:1
710
~
17
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M
H
z
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C
S
Rx
:
193
0
~
19
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H
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Tx
:
1
850
~
19
10
M
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