CHIRP

Hi Brad,

The COM port number must have changed at some point. I'm not familiar with Windows 11 but if you open the "Device Manager" (this is what they called it in Windows 7 and 10) then expand "Ports (COM and LPT) then you can see what COM numbers are available. Also ensure your USB to serial adapter is plugged in first :)

Hope that helps,
Tony

Hi Brad,

Which USB to serial adapter do you have, if you don't mind me asking. Usually I see Prolific or FTDI based devices.

Also just to ensure, when you remove your usb to serial adapter does the Device Manager "refresh" and remove that COM1 port from the list?

Thanks,
Tony

"Qualcomm" does seem like a legitimate device driver for a programming cable. The most common are FTDI, Prolific, Silicon Labs and WCH.

I would recommend that you visit the Miklor website's "Driver and USB Cables":https://www.miklor.com/COM/UV_Drivers.php page. Use the links there to download and install the latest device driver for FTDI, Silicon Labs and WCH style Serial-to-USB chips. See if that works for you. If is does, you are all set. If it doesn't download, install and select the older Prolific v3.2.0.0 device driver per the instructions provided. The older Prolific device driver is necessary because the Prolific PL2303HX and PL2303TA chips have been deemed "end of life" (EOL) by prolific and the latest driver from their website and/or auto installed by Windows is designed to not work with EOL chips.

Jim KC9HI

Same error on my machine:

"An error has occurred

could not open port COM3: [Error 2] The system cannot find the file specified."

Yaesu FT70-DR, Windows 10, Microsoft Surface Pro 7.

I am using a generic USB-C to USB Mini 5-pin cable. Is that supposed to work, or do I need a specialty FTDI cable?

It's really hard to find FTDI cables that connect to modern USB-C ports and all the crazy manufacturer nonsense on the other side (USB Mini 5-pin, 8-pin, 3.5mm TRS)... The real money is in selling people proprietary programming cables :/

Andrew Pennebaker wrote:

Same error on my machine:

"An error has occurred

could not open port COM3: [Error 2] The system cannot find the file specified."

Yaesu FT70-DR, Windows 10, Microsoft Surface Pro 7.

I am using a generic USB-C to USB Mini 5-pin cable. Is that supposed to work, or do I need a specialty FTDI cable?

It's really hard to find FTDI cables that connect to modern USB-C ports and all the crazy manufacturer nonsense on the other side (USB Mini 5-pin, 8-pin, 3.5mm TRS)... The real money is in selling people proprietary programming cables :/

The majority of radios are programmed via a serial connection, not a USB connection. You need a programming cable that, on the USB end, has a USB-to-Serial chip inside. This chip, along with a compatible device driver, create a virtual serial port. Not to say they don't exist, the only programming cables that I have seen so far with a USB-C connection were for the Kenwood style 2-pin connection.

If the chip is a Prolific type, then that usually means that you have to force Windows to use an older device driver because the ones that are auto installed by Windows are incompatible. Programming cables with FTDI, Silicon Labs or WCH chips can generally use the driver auto installed by Windows but I prefer the latest driver downloaded from the chip vendors website.

Jim KC9HI