CONTROL CABLE SIGNALS 3

■Terminal information

Consider the following points when using a non-Icom transceiver.

TerminalDescription

Start voltage [STAR]

When a start voltage (less than 1 V) is received, the AT-141 begins automatic tuning.

[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.

Start voltage 8

[V]

6

4

2

0

More than 350 msec.*

Approx. 7.5 V

Less than 1 V to start tuning

Time

*For tuner through operation; Less than 250 msec.

[KEY] [STAR] [13.6] [ANTC]

Key voltage [KEY]

During automatic tuning, the AT-141 grounds the key voltage line, and the HF transceiver reduces output power.

During automatic tuning

Key

Approx. 7.5 V

voltage 8

 

[V]

 

6

 

4

 

2

 

0

 

Grounded Time

6