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AT-140
Icom AT-140 Service Manual
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8 - 2
8-2
MANU
AL UNIT (A
T
-130E ONL
Y)
W21 (TUNER)
W301
W302
IN2
J16
to
TUNER unit
J1
MP1
IN1
GND
ANTC
1
3
from TUNER
unit P1
J301
GND
13.6
OUT1
from TUNER
unit W35
OUT2
to antenna
NOTE
:
Ref.
No.
is 300 series
J323
18
20
Table of Contents
Product View
2
Repair Notes
2
Table of Contents
3
Specifications
4
Inside View
5
Circuit Description
6
Forward (FWD) Power Detector Circuit
6
SWR Detector Circuit
6
Phase Detector Circuit
7
Impedance Detector Circuit
7
Logic Circuit
7
Antenna Circuit Current Detector Circuit
7
Adjustment Procedures
8
Required Test Equipment
8
Connection
8
Antenna Tuner Adjustments
9
Parts List
10
Mechanical Parts List
15
Exploded View
16
Semi-Conductor Information
17
Boards Layout
18
Block Diagram
20
Voltage Diagram
21
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Instruction Manual
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Icom AT-140 Specifications
General
Compatibility
IC-M802
Product color
Gray
Frequency range
1.6 - 30 MHz
Brand compatibility
ICOM
Quantity
1
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