# Cables for ICOM M-803 (marine SSB and HAM transciver) **URL:** \ **Category:** Uncategorized\ **Tags:** icom-m-803\ **Created:** [March 6, 2023, 7:38pm UTC](https://forum.digirig.net/t/cables-for-icom-m-803-marine-ssb-and-ham-transciver/1238 "2023-03-06T19:38:22Z")\ **Posts on this page:** 1\ **Showing post:** 1
**Author:** ![markD](https://forum.digirig.net/user_avatar/forum.digirig.net/markd/32/992_2.png) [@markD](https://forum.digirig.net/u/markD)\ **Post date:** [March 6, 2023, 7:38pm UTC](https://forum.digirig.net/t/cables-for-icom-m-803-marine-ssb-and-ham-transciver/1238/1 "2023-03-06T19:38:22Z")
Hi, I have a brand new ICOM M-803 a dual role transciver (MARINE SSB and HAM). This unit has been designed to use any of a PACOR modems. I have no itentions to follow this road. I want to use WINLINK, PAT, VARA together with my LINUX box. M-803 has a dedicated 9 pin serial port to connect with a computer. Its pins are as follow: 1 DCD Inputs terminal for carrier detection. 2 RXD Inputs terminal for receive data. NMEA-OUT NMEA0183 ver 4.10 data output. 3TXD Outputs transmit data. NMEA-IN NMEA0183 ver 4.10 data input. 4 DTR Outputs data terminal ready signal. 5 GND Connected to ground. 6 DSR Inputs terminal for a data-set-ready signal. 7 RTS Outputs request-to-send data. 8 CTS Inputs terminal for clear-to-send data. 9 NC No connection. **Its serial port for modem connection (PACTOR):** 1 MOD+ Modulation input from an external terminal unit. Input impedance: More than 600 Ω Input level: Approximately 0.77 V rms 2 MOD– Coaxial ground for MOD+. – 3 GND Ground for digital equipment. – 4 AF+ AF detector output for an external terminal unit. Output impedance: Less than 600 Ω Output level: More than 770 mV rms 5 AF– Coaxial ground for AF+. – 6 GND Ground for digital equipment. – 7 NC No connection. – 8 SEND Ground this pin to transmit. Ground level: –0.5 to 0.8 V Input current: Less than 20 mA 9 GND Ground for digital equipment. – REMOTE Pin Pin name Description **Finally, its ACC (round) ports pinout:** ACC Pin Pin name Description Specification 1 CWK CW and FSK keying input. Input level: –0.5 to 0.8 V 2 AF GND Ground line for AF signal. – 3 SEND Input/Output pin. Ground this pin to transmit. Ground level: –0.5 to 0.8 V Input current: Less than 20 mA 4 MOD Modulator input. Usable when pin 3 is grounded. Input impedance: More than 10 kΩ Input level: Approximately 100mV rms 5 AF AF detector output. Fixed, regardless of [VOL] position. Output impedance: Less than 4.7 kΩ Output level: 100–300 mV rms 6 NC No connection. – 7 13.6 V 13.6 V output when power is ON. Output current: Maximum 1 A 8 ALC ALC voltage input. Control voltage: –3 to 0 V Input impedance: More than 10 kΩ Is it possible to create a set of cables to control this radio? with the best regards, Mark --- _[View the full topic](https://forum.digirig.net/t/cables-for-icom-m-803-marine-ssb-and-ham-transciver/1238)._