Transmitter Adjustments - Icom IC-M802 Service Manual

4-5 TRANSMITTER ADJUSTMENTS

The following adjustments must be performed at "ADJUSTMENT MODE" after "SWR DETECTOR" and "RECEIVER" ADJUST-
MENTS in the SECTION 4-3 and 4-4.
ADJUSTMENT ADJUSTMENT CONDITIONS
TRANSMIT 1 • While pushing HM-135's DOWN key,
PEAK AND [TX] and [RX] switches, turn power
TOTAL GAIN ON.
(TX PEAK) • Connect an audio generator to the
[MICROPHONE] connector and set
as:
Frequency
Level
• Push [1] swtich to enter the TX adjust-
ment mode (LCD displayed: "TX SET").
• Push [ENT] switch, then the transceiv-
er is transmitting.
(TOTAL GAIN) 2 • After setting 75 W, push the [ENT] key
to write the adjustment value in the
memory.
TX POWER 1 • LCD displayed :"TX POWER HIGH"
(HIGH) • Set the audio generator as:
Frequency
Level
2 • After setting 140 W, push the [ENT]
key to write the adjustment value in
the memory.
(MIDDLE) 1 • LCD displayed :"TX POWER MID"
• Set the audio generator as:
Frequency
Level
2 • After setting 70 W, push the [ENT] key
to write the adjustment value in the
memory.
(LOW) 1 • LCD displayed :"TX POWER LOW"
• Set the audio generator as:
Frequency
Level
2 • After setting 20 W, push the [ENT] key
to write the adjustment value in the
memory.
TUNE 1 • LCD displayed :"TX POWER TUNE"
POWER • Set the audio generator as:
Frequency
Level
2 • After setting 10 W, push the [ENT] key
to write the adjustment value in the
memory.
MEASUREMENT
UNIT
Rear Connect an RF power
panel meter to the [ANT]
connector.
: 1.5 kHz
: 10 mV
Rear Connect an RF power
panel meter to the [ANT]
: 1.5 kHz connector.
: 100 mV
Rear Connect an RF power
panel meter to the [ANT]
: 1.5 kHz connector.
: 100 mV
Rear Connect an RF power
panel meter to the [ANT]
: 1.5 kHz connector.
: 100 mV
Rear Connect an RF power
panel meter to the [ANT]
: 1.5 kHz connector.
: 100 mV
4 - 9
VALUE
LOCATION
Maximum out-
put power
75 W
140 W
70 W
20 W
10 W
ADJUSTMENT
UNIT ADJUST
MAIN L706
RC-25 [CH]
DIAL
RC-25 [CH]
DIAL
RC-25 [CH]
DIAL
RC-25 [CH]
DIAL
RC-25 [CH]
DIAL