I bought the RT Systems software and programming cable for the Yaesu FT-2900 and have been using it with my FT-2900 for some time. I recently purchased a FT-60 and was hoping to create an adapter to convert the FT-2900 cable with an RJ11 connector to a TRRS. Before testing it out, I verified that Chirp was able to use FT System cable for the FT-2900. I then put my adapter on the cable and configured Chirp to download from the FT-60 but the radio and Chirp both error'd out. Attached are the pin-outs for both connectors. Assuming all my connections are good (I've double checked), do you see any issues with the pin-out? Or do you have any other suggestions/ideas I could try?