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4 - 5
4-3 ADJUSTMENTS ON THE RF UNIT
ADJUSTMENT
ADJUSTMENT CONDITION
OPERATION
ADJUSTMENT
POINT
VALUE
PRERARATION
(Preset)
1 • Frequency
: 14.150 MHz
• Mode
: USB
• ANTENNA
: [ANT1]
• [P.AMP1]
: "ON"
• Receiving
• Connect a Digital multimeter to
CP1102" (RF UNIT).
R1101
(RF UNIT)
4.4–4.6 V
2
• Connect a Digital multimeter to
CP1103" (RF UNIT).
R1132
(RF UNIT)
4.4–4.6 V
3
• Set R1228 (RF UNIT) to center
position.
R1228
(RF UNIT)
Center
position
(MCF-M)
4
• Set the L1401 and L1402 as below.
L1401, L1402
(MCF-M BOARD)
–
(MCF-W)
5
• Set the L1401 and L1402 as below.
L1401, L1402
(MCF-W BOARD)
–
(MCF-N)
6
• Set the L1401 and L1402 as below.
L1401, L1402
(MCF-N BOARD)
–
RECEIVE
SENSITIVITY
(HF BAND)
1 • Frequency
: 14.150 MHz
• Mode
: USB
• ANTENNA
: [ANT1]
• Receiving
1) Connect an SSG to the [ANT1] and
set as;
Frequecy
: 14.1515 MHz
Level
: 0 dBµ
Modulation
:
None
2) Connect an AC Millivoltmeter to the
[EXP-SP].
3) Adjust the sensitivity with L1408
and L1058.
L1408, L1058
(repeatedly)
(RF UNIT)
Max. audio
output level
IMAGE
RESPONSE
1 • Frequency
: 14.150 MHz
• Mode
: USB
• ANTENNA
: [ANT1]
• Receiving
1) Connect an SSG to the [ANT1] and
set as;
Frequecy
: 14.0765 MHz
Level
: +94 dBµ
Modulation
:
None
2) Connect an AC Millivoltmeter to the
[EXP-SP].
3) Adjust the sensitivity with R1516
and C1656.
R1516, C1656
(RF UNIT)
Min. audio
output level
RECEIVE
SENSITIVITY
(50 MHz BAND)
1 • Frequency
: 50.0200 MHz
• Mode
: USB
• ANTENNA
: [ANT1]
• [PREAMP2]
: "ON"
• Receiving
1) Connect an SSG to the [ANT1] and
set as;
Frequecy
: 50.0215 MHz
Level
: –10 dBµ
Modulation
:
None
2) Connect an AC Millivoltmeter to the
[EXP-SP].
3) Adjust the sensitivity with L1222.
L1222
(RF UNIT)
Max. audio
output level
IF THROUGH
(50 MHz)
1 • Frequency
: 50.0200 MHz
• Mode
: USB
• Receiving
1) Connect an SSG to the [ANT1] and
set as;
Frequecy
: 64.455 MHz
Level
: +94 dBµ
Modulation
:
None
2) Monitoring the S-METER on the
display, adjust the swing width with
C1265.
C1265
(RF UNIT)
Min.
swing
width
3 rotations
Core
3.5 rotations
Core
4.5 rotations
Core
Center position