A3AI0 FM SUM LOOP PHASE DETECTOR
20 MHz
BANDPASS AMPLIFIER
ATTENUATOR
3dB
FM SUM LOOP |
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MIXER IF | W26 |
24 0 | w |
P/0 A3AII |
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LF LOOPS SECTION I | |
NOTCH 'FILTERS'
L7
680n
AMPLIFIER
+5V
L8
4 .7N
Q2
R22
I0
I CIS r 0 .047M
R23
4220
CI6
O .OIu
FM SUM LOOP |
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PHASE DETECTOR |
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REFERENCE(CW) |
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FROM REFERENCE SECTION | J3 | 20MHz CW XA3A70 |
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LF MULTIPLIER | W32 |
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1 | (0 | .5VPp) | (10< | |||
2 © | 94 ~. ( | < 1 | ~.Z | 1 | ||
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FM SUM LOOP |
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PHASE DETECTOR |
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REFERENCE(FM) |
| 1 J2 | 20 MHz FM |
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FROM FM LOOP | W33 |
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43 | s3 | < I | (0 .ISVPp) |
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FM/CW | P/0 |
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CONTROL |
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W52 |
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FROM DCU |
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n |
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55 |
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3
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| +5V |
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| RII |
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| C4 |
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| 100 |
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| li .< 2OMH | |
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| TP2 | 0z5VpCW. |
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| p\ 7 | |
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| 20 MHz |
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| +5V | |
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| BANDPASS |
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| AMPLIFIER |
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| RI5 | |
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| 12 |
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| L4 |
| C9 | C13 | 681 | |
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| 316 |
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| 680n | 100P | T | O .OId |
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| R4 |
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| 2150 |
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~E | I( + • | Q3 |
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C3 |
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56 | 0 .OIu | 2 870 | R9 |
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.2 |
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| RIO | .LC10 |
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| 422 |
| 0 .047u |
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TRANSLATOR
+5V
LI
4 .7u
+5V
+ | CI | C5 |
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| 33P | 0 .01M |
FM/CW SELECTOR
9 | U4B | 6 |
10 |
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II | 0 | NC |
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12 | U4C | 14 |
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| 0 | NC |
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| U4A | 3 |
| 0 | NC |
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20MHz PLUS FM (1 .2 VPP) )
U .
R25
511
V
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| 7 | 0 |
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(5 | 4 .7u | ||
I8 ~/ | J_C2 | ||
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| T 22u |
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GND | 6, |
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I |
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I8 LJ J |
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< . < |
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