ANTENNA
RF IN
NORMAL
RL1
RL2
L NETWORK
TUNE
FWD POWER
TUNE
SWR
DETECTOR
ATTENUATOR
R6 - R14
L1, D1-D4, IC14
L6, D12, D13, , IC 16, IC17
SWR1
SWR2
SWR3
C NETWORK
PHASE
DETECTOR
IC15, IC17, IC 18, Q11, Q12
J6
PHASE
J5
IMPEDANCE
DETECTOR
D8 - D11, Q9, Q11, IC15
CP11
CP12
CP13
CP15
CP14
|z|
PWR
CP17
BUFFER
+8V
RELAY DRIVERS
IC13
IC10, IC11, IC12
COMMAND
+ 13.8 V
IC19
VOLTAGE
REGULATORS
GATE
CPU
CONTROL
LATCHES
IC8
IC20
IC4, IC5, IC6
Q6
Q7
BUFFER
Q1
START
IC7, Q2
RESET
CLR
Vdd
CS1
CS2
CS3
EN
PWR
DATA
Q5
+5V
CPU
IC1
AH-3 BLOCK DIAGRAM
BUFFER
Q3, Q4
KEY
ANTENNA
RL3
RL4
RL5
RL6
RL7
RL8
L18
L6
L7
L8
L9
L10
3T
4T
6T
5T
7T
10T
RL9
RL10
L11
18T
L12
31T
RL11
RL21
L13
L14
30T
NOTE: RL12 and RL20 are always in opposite states
NORMAL
RL1
RL20
AH-3 RF PATH
AND RELAY CONFIGURATION
R169
ABSORBER
DSA301L
R170
47K
RL19
RL18
RL17
RL16
..... attn... SWR det ......
RL15
TUNE
RL14
TUNE
fwd pwr det
RL12
RL2
RL13
RF IN
C160
C165
82 pF
82 pF
C156
C158
C161
C166
220 pF
100 pF
82 pF
82 pF
C151
C152
C153
C154
C155
C157
C159
C162
C167
1nF
1nF
1nF
470 pF
220 pF
220 pF
120 pF
82 pF
82 pF
58T