Transmit Adjustments - Icom IC-T70A Service Manual

5-2 TRANSMIT ADJUSTMENTS

1) Select an adjustment item using [VOL].
2) Set or modify the adjustment value as specifi ed using [DIAL], then push [BAND] to store the adjustment value.
TRANSCEIVER'S
ADJUSTMENT
TX DRIVE AMP 1 • Frequency: Displayed
IDLING CURRENT • Transmitting
(at 7.2 V)
VHF
[High power]
[MIddle power] 2 • Transmitting
[Low power] 3 • Transmitting
UHF 4 • Transmitting
[High power]
[Middle power] 5 • Transmitting
[Low power] 6 • Transmitting
TX FINAL AMP 1 • Frequency: Displayed
IDLING CURRENT • Transmitting
(at 7.2 V)
VHF
[High power]
[MIddle power] 2 • Transmitting
[Low power] 3 • Transmitting
UHF 4 • Transmitting
[High power]
[Middle power] 5 • Transmitting
[Low power] 6 • Transmitting
¤ CONNECTION
RF POWER METER
(10 W/50 Ω)
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CONDITION
1) Connect an RF power meter to the
antenna connector.
2) Connect an ammeter between the
power supply and the transceiver.
1) Connect an RF power meter to the
antenna connector.
2) Connect an ammeter between the
power supply and the transceiver.
• POWER SUPPLY
AMMETER
+
OPERATION
+
−
+
–
DC power supply
6–10 V/3 A
5 - 3
ADJUSTMENT
VALUE
ITEM
150–190 mA
230–270 mA
1.05–1.15 A
0.55–0.65 A
0.15–0.25 A
1.05–1.15 A
0.55–0.65 A
0.15–0.25 A
VOLTAGE METER
"7.2 V"
+
−
–