Transmit Adjustments - Icom IC-M803 Service Manual

5-4 TRANSMIT ADJUSTMENTS

ADJUSTMENT ITEM
ADJUSTMENT
IDLING 1
- Preparation -
- Adjustment - 2 "VDL IDL Set"
3 "Final 1 IDV (12M)"
4 "Drive 1 IDV"
5 "Pre-Driver IDV"
TX OUTPUT
1 "TX Total HF Gain"
POWER (HF)
- Preparation -
- Adjustment -
2 "TX Total HF Gain"
3 "Power Tune (12M)"
4 "Power 20W (12M)"
5 "Power 60W (12M)"
6 "Power 100W (12M)"
7 "Power 150W (12M)"
8 "Power 150W (4M)"
9 "Power 150W (6M)"
10 "Power 150W (8M)"
11 "Power 150W (16M)"
12 "Power 150W (18M)"
13 "Power 150W (22M)"
14 "Power 150W (25M)"
15 "Power 150W (27M)"
SETTING CONDITION
DISPLAY
–
• Automatically transmits.
( Automatically returns to receive
when the beeps sound.)
• Receiving
• Connect the RF power meter to the
[ANT] connector.
• Connect the audio generator with
the AC millivoltmeter to [MIC]
connector, and set it to:
Frequency:
Waveform:
Level:
• Automatically transmits.
–
1.5 kHz
Sine wave
40 mV rms
5-4
OPERATION
Select the "VDL IDL Set" item.
(Adjustment menu: "TX/ID" > "ID" >
"VDL IDL Set")
Push .
(Two beeps sound.)
Push .
(Two seconds later, two beeps
sound.)
Push .
(One second later, two beeps
sound.)
Push .
(Two beeps sound and then
automatically moves to the Transmit
power adjustment "TX Total HF
Gain.")
Push .
Rotate [CH/GRP] to set the output
power to 70 W, then push
(Two beeps sound.)
Rotate [CH/GRP] to set the output
power to 10 W, then push
(Two beeps sound.)
Rotate [CH/GRP] to set the output
power to 20 W, then push
(Two beeps sound.)
Rotate [CH/GRP] to set the output
power to 70 W, then push
(Two beeps sound.)
Rotate [CH/GRP] to set the output
power to 100 W, then push
(Two beeps sound.)
Rotate [CH/GRP] to set the output
power to 140 W, then push
(Two beeps sound.)
Rotate [CH/GRP] to set the output
power to 130 W, then push
(Two beeps sound, and then
returns to receive.)
Continued on the next page...
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