I had some projects to made and those involve external ATU connectors for ICOM radios; I think it's better to have some informations here for anyone looking for them.
Electrical connection for ICOM External ATU 4 pin MOLEX connector:
Thus I searched on various retailers for those connectors and I found them made by Molex.
The connector case manufacturer's code is 03-09-2041.
The crimp pins manufacturer's code is: 02-09-2103
You can buy them from MOUSER:
Connector-Mouser part: 538-03-09-2041 TARIC:8547200090 ECCN:EAR99 COO:US
Pins-Mouser part: 538-02-09-2103 TARIC:8536699099 ECCN:EAR99 COO:US
Icom to LDG antenna tuners electrical connection:
Simple Push To Tune interface schematic:
ICOM IC-706 ATU
ICOM IC-703 ATU
ICOM IC-7100 ATU
ICOM IC-7000 ATU
ICOM IC-7300 ATU
ICOM IC-7600 ATU
ICOM IC-746 ATU
ICOM IC-718 ATU