Icom CY-F121S, Instruction Manual, Page: 10 / 21

Pin
No.
Pin Name Description Specifi cation
6 Vcc TX +15V DC Supply for External Controller, TX
Unit
Maximum 1 A
7 GND TX DC Ground, TX Unit
8 Busy TX Output Terminal for Busy Signal, TX Unit
Open
Open
CoOFF, 0V=ON
9 AFO TX Audio Output, TX Unit
10 DISC TX Discriminator Output, TX Unit
11 TXA TX Transmit Audio, TX Unit
12 PTT TX External PTT, TX Unit
13 TXD TX Transmit Data Input, TX Unit
18 Vcc RX +15V DC Supply for External Controller, RX
Unit
19 GND RX DC Ground, RX Unit
20 Busy RX Output Terminal for Busy Signal, RX Unit
21 AFO RX Audio Output, RX Unit
22 DISC RX Discriminator Output, RX Unit
23 TXA RX Transmit Audio, RX Unit
24 PTT RX External PTT, RX Unit
25 TXD RX Transmit Data Input, RX Unit
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Accessory connector
PANEL DESCRIPTION 1
DB25 Pin Outs Confi guration
7