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A3AI0 FM SUM LOOP PHASE
DETECTOR (08662-60145)
C4
O
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+5V
RII
100
20 MHz
BANDPASS
AMPLIFIER
L4
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316
12
680n
100P
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2150
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870
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RIO
422
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NOTCH
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FILTERS'
TTL-TO-ECL LEVEL
TRANSLATOR
+5V
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FM/CW
CONTROL
FROM DCU
55
20 MHz
BANDPASS
AMPLIFIER
ATTENUATOR
3dB
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RI5
C13
681
U4A
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0
(ECL)
20MHz PLUS FM
(1
.2 VPP)
)
FM SUM LOOP
MIXER IF
W26
24
0
w
FM SUM LOOP
PHASE DETECTOR
REFERENCE(CW)
FROM REFERENCE SECTION
LF MULTIPLIER
P/0 A3AII
LF LOOPS SECTION
I
MOTHERBOARD
(08663-6Q3151
J3
20MHz CW XA3A70
1
(0
.5VPp)
FM SUM LOOP
PHASE DETECTOR
REFERENCE(FM)
FROM FM LOOP
43
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1
J2
20 MHz FM
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(0
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<
1
W33
P/0
W52
n
R23
4220
FM/CW SELECTOR
10
9
U4B
0
(ECL)
6
NC
3
NC
R22
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L8
4
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Q2
CI6
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V
R25
511
AMPLIFIER
+5V
-IOV
LI
4
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3
+5V
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0
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7
CI
33P
0
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SERIAL PREFIX
: 2234A