Icom IC-FR3000 - Receiver Adjustment Procedures

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