Cable <https://www.retevis.com/rt20-rt65-rb19-usb-programming-cable-us>
Driver for Mac OS Catalina <https://www.prolific.com.tw/US/ShowProduct.aspx?p_id=229&pcid=41>

On 12/26/23 17:08, Paul Schmidt, K9PS wrote:
Actually, the RT20 has a USB-C plug. The cable is available from Retevis.  I'm not sure what's in it, but I tried a straight USB cable and it didn't work. Attarently there's a serial chip (two?) In the cable. I'see if I can do some playing around and figure out what's in it

- de k9ps
On Dec 26, 2023, at 3:03 PM, Jim Unroe <rock.un...@gmail.com> wrote:

    On Tue, Dec 26, 2023 at 12:21 PM K Hindall<khind...@thirteens.net>  wrote:

        Update: I am now using CHIRP-next. But I am completely
        baffled. The radio is not talking to CHIRP, but I am baffled
        regarding the cable. Can someone tell me what cable I need to
connect from the RT20 to a USB 2.0 port? Thank you! K

    Any programming cable with a Kenwood style 2-pin plug on the radio end
    and a module containing a USB-to-Serial chip on the computer end
    should work. It is best to have one using an FTDI style chip because
    you can take advantage of the Apple native FTDI driver. Other chip
    brands may require the purchase of 3rd party drivers. Here are a few
    examples of FTDI chip based programming cables that should work.

    https://baofengtech.com/product/pc-03-programming-cable/

    https://baofengtech.com/product/pc-03-programming-cable/

    Jim KC9HI
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* Amateur Radio Station AC0HY                     *
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