2
INSTALLATION AND CONNECTIONS
2-10
D
Connecting a non-Icom linear amplifier
GND
HSEND
(Orange)
/VSEND
ALC (Blue)
13.8 V (Gray)
Relay
RF IN
RF OUT
ALC
SEND
Non-Icom Linear amplifier
To an antenna
[ANT1]*
2
13-pin plug with ACC cable
Switching diode
ACC
IC-7100
To connect a non-Icom HF, 50/70*
1
MHz bands linear amplifier, see the diagram below.
*
1
70 MHz band transmission is available, depending on the transceiver version.
R
WARNING!
The SEND terminal of the linear amplifier must be connected to the HSEND (ACC connector pin 3) for the HF, 50/70*
MHz bands, and to VSEND (ACC connector pin 7) for the 144/430 MHz bands. An external relay must be used.
* 70 MHz band transmission is available, depending on the transceiver version.
When the HSEND (or VSEND) terminal controls the inductive load (such as a relay), a counter-electromotive force
can damage or cause the transceiver to malfunction. To prevent this, add a switching diode on the load side of the
circuit to the counter-electromotive force absorption.
•
We recommend adding a switching diode, such as an “1SS133”.
•
When the diode is added, a switching delay of the relay may occur. Be sure to check its switching action before
operating.
The ALC input level must be in the range 0 V to –4 V. The transceiver does not accept positive voltage. Non-matched
ALC and RF power settings could cause a fire or damage the linear amplifier.
When using a linear amplifier such as IC-PW1/EURO, adjust the output power to stay within the ALC zone by pushing
MIC/RF PWR
(
C
). For ALC zone information, refer to ‘Basic transmit operation.’ (p. 3-23)
When using a linear amplifier that has a time delay between receiving and transmitting, a high SWR might cause the
linear amplifier to malfunction. To prevent this, slow the TX Delay the “TX Delay” settings in the “Function” Set mode.
(p. 17-19)
SET
(
C
) >
Function >
TX Delay
Linear Amplifier Connections (Continued)
*
2
When connecting a 144 MHz or 430 MHz band's liner am-
plifier, connect to [ANT2].
The
L
,
R
,
C
or
D
in the
instructions indicate the
part of the controller.
L
: Left side
R
: Right side
C
: Center bottom
D
: Display (Touch screen)
L
eft
R
ight
C
enter
D
isplay
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