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n Terminal information
Consider the following points when using a non-Icom
transceiver.
Terminal
[KEY]
Key voltage. Grounded during tuning.
Max. current drain 100 mA.
13.6 V DC + input terminal.
[13.6]
Max. current drain 2 A
[STAR]
Receives start voltage.
Max. current drain 1 mA
[ANTC]
Antenna current detector output.
CONTROL CABLE SIGNALS
Description
[KEY]
[STAR]
[13.6]
[ANTC]
Start voltage [STAR]
When a start voltage (less than 1 V) is received, the
AT-141 begins automatic tuning.
More than
350 msec.*
Start
voltage
8
[V]
6
4
2
0
*For tuner through operation; Less than 250 msec.
Key voltage [KEY]
During automatic tuning, the AT-141 grounds the key
voltage line, and the HF transceiver reduces output
power.
Key
Approx. 7.5 V
voltage
8
[V]
6
4
2
0
3
Approx. 7.5 V
Less than 1 V to
start tuning
Time
During automatic tuning
Time
Grounded
6
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