Programming Cable for iCom IC-F121S and others

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k6xtc
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Posts: 26
Joined: Sat Oct 26, 2019 12:09 am

Programming Cable for iCom IC-F121S and others

Post by k6xtc » Sat Oct 26, 2019 1:42 am

This radio requires programming software and a cable to set it up. It cannot be configured with the radio controls. The cable specified by iCom is OPC-1122. Rather expensive if purchased from icom though you can buy clones cheaper. It's easy, and a lot cheaper, to roll your own with a USB to 3.3v TTL serial adapter and an old network cable.

I wired an RJ-45 breakout board to a pin connector. This way I can use whatever length network cable I need.

20191025_190622.jpg

Component sources
FTDI USB To TTL Serial Converter
RJ45 8-pin Breakout

Related info

This should also work on the following iCom radios:
  • IC-F121
  • IC-F521
  • IC-F621-2
  • IC-F621TR
  • IC-F1721
  • IC-F1871
  • IC-F2721
  • IC-F2821
opc1122_Ver1.jpg
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