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J1
2
PC STR
RF MUX3 INH
19
WO103
VREF EX
14
LPTT
20
RF MUX1 INH
13
A D LEVEL
27
RF DATA C
9
RF DATA B
26
RF DATA A
8
TX MOD
22
STN CS EX
21
HS CS EX
3
RF MUX2 INH
10
RSSI
30
RX WB AUDIO
7
RF DATA
28
RF CLK
11
SYN CS RX
29
HS CS RX
12
J104
FAN HIGH
2
FAN 1 BUFFER
FAN 1 LOW
1
U107A
FAN HIGH
4
FAN 2 BUFFER
FAN 2 LOW
3
U107B
Figure 6-10 RF INTERFACE BOARD BLOCK DIAGRAM
MUX/RES
FORWARD
Q8
STR
Q7
U103
Q6
SER
Q5
Q4
CLK
Q3
Q2
Q1
Q101
OE
MUX 3
Y0
U109A
Y1
U104
Y2
E
A0
Y3
A1
Y4
A2
Y5
Y6
Z
MUX 1
E
Z
U105
A2
A1
Y0
A0
Y2
Y7
Y1
Y6
MUX 2
Z
Y0
A2
Y1
U106
A1
Y2
A0
Y7
E
Y5
Y4
Q107
+15V
6-25
RF POWER CONTROL
POWER
U102A
POWER
ADJUST
U102B
Q102-Q105
COMPARATOR
Q108
Q111B
U112B
U112A
U112D
U112C
U109B
U109D
WO135
U110F
U110E
U110A
U110B
Q106
U108A
5V REGULATOR
U101
+5V
CIRCUIT DESCRIPTION
+26V
P101
P102
+15V
P103
P104
P105
PA
PWR CNTRL
RF DET (PRE-DRIVER)
FORWARD POWER
FINAL 1 POWER
FINAL 2 POWER
FINAL 3 POWER
FINAL 4 POWER
REFLECTED POWER
TEMPERATURE
EXCITER
LPTT
VREF EX
SYN LK EX
HS LK EX
RF CLK
RF DATA
TX MOD
SYN CS EX
HS CS EX
RECEIVER
RX INJ
HS LK RX
SYN LK RX
RSSI
RX WBAND
RF DATA
RF CLK
SYN CS RX
HS CS RX
March 1999
Part No. 001-2009-600
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