Icom IC-821H - Page 27

TRANSMITTER ADJUSTMENT (CONTINUED)
ADJUSTMENT
ADJUSTMENT
CONDITIONS
TONE 1
• MAIN band freq.
: Any
BURST
• Applied
no audio signals to the
(EUR
microphone connector.
version)
• Transmitting by the [TONE] switch.
LO LEAK 1 • MAIN band freq'.
: 144.00000 MHz
• Mode
:FM
• Transmitting
2
• MAIN band freq.
[EUR] version
146.00000 MHz
[USA].
[AUS] versions 148.00000 MHz
• Transmitting
CARRIER 1
• MAIN band freq.
: Any
SUPPRES-
•
Mode
:
USB and LSB
SION
• Applied
no audio signals to the
microphone connector.
• Transmitting
-MAIN UNIT
FM deviation [R41
adjustment R29
Carrier ~R 156
suppression
adjustment
R158
FM, CW drive
level adjustment
[
R230
R136
FM, CW drive J23
level check point
- RF-A UNIT
MEASUREMENT
UNIT
LOCATION
Rear Connect an FM
panel
deviation meter to the
transmitting band's
antenna connector
through an attenuator.
Rear Connect a spectrum
panle
analyzer
to the
[VHF ANT] connector
through an attenuator.
Rear Connect a spectrum
panel
analyzer
to the
transmitting band's
antenna connector
through an attenuator.
ADJUSTMENT
VALUE
POINT
UNIT
ADJUST
±3.5 kHz
MAIN
R64
Minimum
level on RF-A C37
the following
frequency:
Displayed freq.
R4
minus 10.85 MHz
(Less than -
60 dB)
Minimum
level MAIN R156, R158
(Less than
-40 dB)
R64 Subaudible tone
adjustment
(USA, AUS version)
Tone burst
adjustment
(EUR version)
R66 T-squelch tone
adjustment
(EUR version)
R92 UHF output power
adjustment
R87 ] ICAPC
R80 adjustment
LO leak
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R4 ]
adjustment
C37
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