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Flex radio virtual ports COM port numbered assignments conflicting with USB serial device

Steve_AJ6TL
Steve_AJ6TL Member ✭✭
in SmartSDR for Windows
When I attach a USB serial device (in this case a QRP labs QDX radio) to my Windows 11 laptop, the operating system assigns it a numbered port matching the highest order Flex Radio virtual com port already in use e.g. COM 7 in my case (and consequently I can't operate the QDX radio also assigned to COM 7). When I delete the highest numbered Flex virtual COM port (from within SDR CAT), the problem repeats (albeit shifting to a lower number e.g. COM 5). Otherwise, the Flex virtual ports all function normally. This appears to be a Windows issues and I'm looking for help.

Answers

  • Al K0VM
    Al K0VM Member ✭✭✭
    edited September 2025

    If I understand you correctly, the problems sounds like a faulty QRP labs comport driver. However, you maybe be able to go into the Device Manage > Ports (COM & LPT), select the QRP labs port and edit it's COM port number. Hopefully the edit will stick through reboots and power cycles.

    You might also try to arrange the Flex com port numbers such that you have an unused port below the first Flex port.

    AL, K0VM

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