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<div><br></div><div>Success!</div><div><br></div><div>I went over to <span>mac-usb-serial.com as Jim suggested, intending to send them email asking whether the Radioddity/QYT cable was likely supported. They had a button on their home page to download a serial detection app, and when I did that, it saw the cable immediately and gave me a link to the order page for the correct driver. Three minutes and $9.30 later, I was successfully retrieving data from my QB25. I exported it to a CSV file so I can peruse it in Excel.</span></div><div><span><br></span></div><div><span></span>Thanks for the help, guys. If either of you are involved in CHIRP development, perhaps you can suggest that <span>mac-usb-serial.com be mentioned on the MacOS Tips page. Their detection app makes it easy to tell whether you can get a compatible driver without all the trial and error of downloading other drivers. I still don't know what happened to the other 2-3 drivers I installed. They said "Installation successful" but I don't see them on my Mac.</span></div><div><span><br></span></div><div><span><br></span></div><div><span>73,</span></div><div><span>Patty</span></div><div><span></span><br></div></div></body></html>