Radio Programming.

Home build an OPC-1529R cable.
By Brian, MW0GKX.
With thanks to Setve, GW6CUR & Wayne GW1UDK, who both sent me the connection scheme.

My new Icom IC-E2820 uses an OPC-1529R cable for data communication (among other things) this same cable is also used by the IC-91, IC-2200, IC-V82, IC-U82 and probably others as well (ID-E880, see the bottom of the page). Here is how to make one (IC-2200, IC-V82 & IC-U82 users will find a connection diagram in their manual) and save around £20.


cable layout

I had a "not very nice" email from somebody (an MM3 licence holder, who will remain nameless) to say that this lead does not work, he wasted time and money on the "bits" to make it and making it. He also said that he had to buy the proper Icom lead in the end, which worked perfectly.

In reply I have told him:

I have made several of these leads, including one where I included the OPC-1529R wiring along with speaker audio and the normal control head wiring in one cable (I have had DSTAR Comms contacts and programmed the raidio memories from a PC laptop, proving that it works). Also Dave, 2W0RUH, Steve, GW6CUR and Wayne, GW1UDK (just 3 that I know of) use leads that were made to this scheme, so if the one you make doesn't work check that:

  1. The plug sits fully home in the radio socket.
  2. All the connections go where they should (i.e. TX and RX are not crossed).
  3. There are no shorts (COM port damage could occur if there are shorts!).
  4. If using a USB - SERIAL adaptor, that the correct COM port is selected!

Further to the above I have received other messages:

Hi Brian,
Your OPC-1529R cable works like a dream. I did have a problem initially but that was down to my poor construction technique. When I went back into it and tidied up my soldering etc it works VERY well and is operating my 91AD as I write.
I would urge others having a problem to review their work quality as I did.
Thanks and cheers
Peter VA3PRW

I found and made the OPC-1529R cable using the instructions you made. It works great! 73!
Brian, W2BJM

Lasse Haugen emailed me from Norway:
Hi, just wanted to tell you that the description for OPC-1529R works fine on my new Icom ID-E880 with the Cloning software Icom provide at their WEB site
Thanks. LA5PPA / Lasse.

Andy, VK2VKZ, writes from Sydney:
Just wanted to let you know that your design for a homebrew OPC-1529R ICOM cable works like a dream with my new ID-880H!
You might want to let your visitors know that
a) It can also be used with a USB to Serial adapter (as I am) if you don't have a serial port
b) That latest version of the ICOM software (currently rev 1.10) is a must. (Go to help/about and check 'Revision 1.1' to be sure). I found rev 1.0 didn't work with the radio I have.
c) The addition of an RF choke to the lead.
Thanks again. Keep up the good work!

Thanks Peter, Brian, Lasse and Andy, glad to be of assistance and good to know that it's still getting world wide "thumbs up".

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