Linear Amplifier Connections; External Antenna Tuner Connection - Icom IC-746PRO Instruction Manual

2
INSTALLATION AND CONNECTIONS
Linear amplifier connections
CONNECTING THE IC-PW1
To an
antenna ACC(1)
ANT
AC outlet
(Non-European versions: 100—120/220—240 V
European version
Turn OFF the transceiver's antenna tuner while tuning the IC-PW1's tuner.
CONNECTING A NON-ICOM LINEAR AMPLIFIER
To an
antenna
RF OUTPUT RF INPUT
Non-Icom linear amplifier

External antenna tuner connection

CONNECTING THE AH-4
The AH-4 must be connected to [ANT1].
Transceiver
Control cable
17
Remote control cable
ACC cable
REMOTE
EXCITER
1 1&2
IC-PW1
: 230 V)
50 Ω coaxial cable
Transceiver
ALC
SEND
Coaxial cable (from AH-4)
ANT1
Ground
Use the [ANT1] connector when connecting a linear
amplifier.
(supplied with the IC-PW1)
(supplied with the IC-PW1)
Coaxial cable
INPUT1
(supplied with the IC-PW1)
Be sure to connect the cable
to the 7-pin ACC(2) jack.
GND
GND
Ground
R WARNING:
Set the transceiver output power and linear
amplifier ALC output level referring to the linear
ANT1
amplifier instruction manual.
The ALC input level must be in the range 0 V to
–4 V, and the transceiver does not accept pos-
itive voltage. Non-matched ALC and RF power
settings could cause a fire or ruin the linear
amplifier.
SEND
ALC
The specifications for the SEND relay are
16 V/DC 0.5 A. If this level is exceeded, a large
external relay must be used.
AH-4
ACC(2) ANT1
Transceiver
Long wire or optional AH-2b