FT-990 to DigiRig Cable

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I don’t own your radio, but it is discussed here:

Cables for Yaesu FT-990

Here’s the connections of interest and pinouts: [image] [image] Based on this, the audio cable is: DIN5 pin 1 (DATA IN) → 3.5mm TRRS ring 1 (RIG_AFIN) DIN5 pin 2 (GND) → 3.5mm TRRS sleeve (GND) DIN5 pin 3 (PTT) → 3.5mm TRRS ring 2 (PTT) DIN5 pin 4 (DATA OUT) → 3.5mm TRRS tip (RIG_AFOUT) CAT cable: DIN6 pin 1 (GND) → 3.5mm TRRS sleeve (GND) DIN6 pin 2 (SERIAL OUT) → 3.5mm TRRS ring 1 (RIG_TXD) DIN6 pin 3 (SERIAL IN) → 3.5mm TRRS tip (RIG_RXD) [image] The serial port is 5V logic lev…

Have you searched on 6-pin DIN cables in the forum?

73 Constrainted