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CW via SmartLink connected to a remote Flex6400

I am a new user of my club's 6400, which is situated on a mountain top not far from me. I have worked SSB from my computer linked to the radio via SmartLink. I'd like to work CW now and can't find if I can do so simply be plugging my paddle into my laptop. My laptop only has a headphone jack, no line-in jack. So it seems to me that I can't do this. I do have logitech speakers that has an input jack so perhaps that would work. Failing that, how do I transmit CW using the keyboard?
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Best Answers

  • KD0RC
    KD0RC Broomfield, COMember, Super Elmer Moderator
    Answer ✓

    Hi Grant, Take a look at this group:

    [email protected] | Topics

    They have a simple to build keyer interface and software that will key your rig remotely. Using a Serial port (likely with a USB to RS232 adapter), you close CTS and RTS to ground to key the rig. I think DTR/DSR can be used for PTT, but I don't remember for sure. The RemoteKeyerInterface software detects the control signal changes when you kit the key and sends a "key the rig" command to the Flex over the LAN/WAN connection.

    I built the interface this past summer, and it works great. I later coded my own homebrew box (TeensyMaestro) to send the keying commands, so I no longer use the RemoteKeyerInterface, but it is always in my computer bag should my own gizmo stop working.

    If you want to send CW remotely using the keyboard instead of a keyer, you can open the CWX interface in SmartSDR and key directly into the CW entry window. With this approach, you won't need the RKI interface or software.

  • Grant VK4JAZ
    Grant VK4JAZ Member ✭✭
    Answer ✓
    Thanks Len, I'll try the CWX interface first.

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