Cables for ICOM IC-M801E (marine SSB and HAM transceiver)


This thread will be similar to:
Cables for ICOM IC-M803

I own an ICOM IC-M801E. I want to connect this using a Digirig, which I will buy (presumably RS232 version), and I need to be sure about cables and pin-outs.

ICOM_IC-M801E_manual.pdf (2.8 MB)
I have compared your answers in the M803 thread with the manual I have for the M801E. The two radios are similar, but the pin-outs for the AF/MOD and REMOTE 9-pin connectors are different. Please can you confirm if I’ve correctly identified how I need to build my cables.

The manual for the M801E is attached. See page 59 for the pin-outs

I think the cables should be built as follows…is this right?
Also, will the PTT function work properly?
(Bold text is the difference from the M803).


DB9 pin 1 (MOD+) → 3.5mm TRRS ring1 (RIG_AFIN)
DB9 pin 2 (MOD-) →
DB9 pin 3 (GND) →
DB9 pin 5 (AF-) →
DB9 pin 6 (GND) →
DB9 pin 9 (GND) → 3.5mm TRRS sleeve (GND)
DB9 pin 3 (AF+) → 3.5mm TRRS tip (RIG_AFOUT)
DB9 pin 5 (SEND) → 3.5mm TRRS ring2 (PTT)

The serial CAT cable will be to REMOTE connector:
DB9 pin2 (RXD) → 3.5mm TRRS tip (RIG_RXD)
DB9 pin3 (TXD) → 3.5mm TRRS ring1 (RIG_TXD)
DB9 pin5 (GND) → 3.5mm TRRS sleeve (GND)
DB9 pin7 (RTS) →
DB9 pin8 (CTS)

This looks ok on paper (screen?). Worth giving it a try.
Please report the results when you have a chance.

Forgot to check, on the TRRS, do you count the rings trom the tip back to the sleeve (first.ring No.1) or is it the other way around?

And I take it.this is to the tip…
DB9 pin 3 (AF+) → 3.5mm TRRS (RIG_AFOUT)

Counting from the tip:


And yes, RIG_AFOUT is on the tip. I’ll edit the post.

Just to confirm this wiring definitely works :+1: :+1:

I made the homebrew cables according to the pin-outs in this thread. I hooked-up last night and (after a bit of fiddling with settings and levels) was able to send/receive email over HF using Winlink RMS and Vara-HF on my laptop, linked to the Icom IC-M801E through DigiRig.

I’m so excited it’s silly :slight_smile:

I might give WoAD a go too and see if I can get that working also.

Thanks for a great product and excellent support.