Receiver Adjustment - Icom IC-2800 Service Manual

RECEIVER ADJUSTMENTS (continued)
ADJUSTMENT ADJUSTMENT CONDITION
SQUELCH 1 • UHF displayed freq. :
(UHF) 445.000 MHz
435.000 MHz
• Set the squelch level to 22 %
using the HM-98 microphone.
• R229
• set an SSG as:
Level
• Receiving
(VHF) 2 • VHF displayed freq. :
145.000 MHz
146.000 MHz
• Set the squelch level to 22 %
using the HM-98 microphone.
• R196
• set an SSG as:
Level
• Receiving
*This output level of the standard signal generator (SSG) is indicated as SSG's open circuit.
R229
UHF squelch
adjustment
R196
VHF squelch
adjustment
Controller
MEASUREMENT
UNIT
Speaker
[USA]
other
: Max clockwise
: 14 µV* (–85 dBm)
[EUR]
other
: Max clockwise
: 14 µV* (–85 dBm)
LOCATION
At the point where the
signal just appears.
DC power supply
13.8 V / 20 A
to the microphone connector
5 - 5
ADJUSTMENT
POINT
VALUE
UNIT ADJUST
MAIN
JIG CONNECTOR
JIG1
(Sensitivity)
1 2 3 4 5 6 7 8
2.2 kΩ
or
JIG2
(S-meter)
1 2 3 4 5 6 7 8
4.7 kΩ
R229
R196