Rx Adjustment - Icom IC-FR4000 Service Manual

4-3 RX 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
• RX UNIT TOP VIEW
CP1
: A03 LW MRTUN
: 465.075 MHz
: 10 µV* (–87 dBm)
: 1 kHz
: ±3 kHz
CP18
CP18
RX sensitivity chack point
MEASUREMENT
UNIT LOCATION
Connect a digital multi
RX meter or oscilloscope
to check point CP18.
C11
C12
C10
C27
C28
C26
4 - 6
ADJUSTMENT
VALUE
UNIT ADJUST
Maximum RX
voltage
RX sensitivity adjustment
C11
C12
C10
C27
C28
C26