Receiver Adjustment - Icom IC-FR3000 Service Manual

4-3 RECEIVER ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITIONS
RX • LCD display
SENSITIVITY • Connect a standard signal generator
to the [RX] antenna connector and set
as:
Frequency
Level
Modulation
Deviation
• Receiving
• LCD display
• Connect a standard signal generator
to the [RX] antenna connector and set
as:
Frequency
• Receiving
• LCD display
• Connect a standard signal generator
to the [RX] antenna connector and set
as:
Frequency
• Receiving
REPEATER • LCD display
SENSITIVITY • Connect a standard signal generator
to the [RX] antenna connector and set
as:
• Connect an RF power meter or 50 Ω
dummy load to the [TX] antenna con-
nector.
Frequency
Level
Modulation
Deviation
• Receiving
• RX UNIT TOP VIEW
: A02 LW HRTUN
: 173.925 MHz
: 32 µV* (–77 dBm)
: 1 kHz
: ±3 kHz
: A03 LW MRTUN
: 162.075 MHz
: A04 LW LRTUN
: 150.075 MHz
: A05 LW RPTSQL
: 150.075 MHz
: 0.2 µV* (–121 dBm)
[USA2], [GEN2], [GEN4]
: 0.32 µV* (–117 dBm)
[EUR2], [FRG2]
: 1 kHz
: ±3 kHz [Other]
: ±2.4 kHz [FRG2]
CP1 CP18
CP18
RX sensitivity chack point
MEASUREMENT
UNIT LOCATION
RX Connect a digital multi
meter or oscilloscope
to check point CP18.
FRONT Speaker
4 - 6
ADJUSTMENT
VALUE
UNIT ADJUST
Maximum FRONT [PRT/BASE]
voltage /[MONI]
Maximum FRONT [PRT/BASE]
voltage /[MONI]
Maximum FRONT [PRT/BASE]
voltage /[MONI]
Squelch open FRONT [PRT/BASE]
/[MONI]