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CONTROL CABLE SIGNALS
2001 NEW
Terminal information
Consider the following points when using a non-Icom
transceiver.
Start voltage [STAR]
When a start voltage (less than 1 V) is received, the
AT-141 begins automatic tuning.
Key voltage [KEY]
During automatic tuning, the AT-141 grounds the key
voltage line, and the HF transceiver reduces output
power.
8
6
4
2
0
Time
Key
voltage
[V]
Grounded
Approx. 7.5 V
During automatic tuning
8
6
4
2
0
Time
More than
350 msec.*
Approx. 7.5 V
Less than 1 V to
start tuning
Start
voltage
[V]
*For tuner through operation; Less than 250 msec.
[KEY]
[STAR]
[13.6]
[ANTC]
Terminal Description
[KEY] Key voltage. Grounded during tuning.
Max. current drain 100 mA.
[13.6] 13.6 V DC + input terminal.
Max. current drain 2 A
[STAR] Receives start voltage.
Max. current drain 1 mA
[ANTC] Antenna current detector output.
AT-141_0.qxd 05.12.1 11:06 Page 6
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