FUNcube Dongle Pro+: In Stock!


After the initial demand, we finally have a good stock of the FUNcube Dongle Pro+ ready for immediate dispatch.

Follow this link about ordering details, or if you’re in a real hurry here’s a direct link straight to the shopping cart.

In Western Europe and North America typically delivery is the following working day. Also if you order three or more, shipping is free!

Many thanks, Howard

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10 Responses to FUNcube Dongle Pro+: In Stock!

  1. Jack says:

    My FCD arrived yesterday. Unfortunately it seems to have a very bad 12 MHz harmonic problem. 12, 24, 36, 144, 444 etc are unusable all the way to 2GHz 🙁 . This is even affecting 10MHz. This is with and without an antenna. I’ve tried it on an old laptop and it still does this. Is my unit defective or am I doing something wrong?

    • admin says:

      Hello Jack.

      You definitely shouldn’t be getting that level of interference. Does it disappear when the antenna connection at the FCD+ is removed or is it still there? I am trying to establish if it’s inside the unit itself or it’s coming from outside. It sounds like USB noise from what you are saying.

      Many thanks, Howard

      • Jack says:

        So I did some troubleshooting…
        When the antenna is removed there are big spikes around 12mHz but only if the mixer gain and lna are on. When the gain and lna are off it goes away.
        When an antenna is attached (Smiley 270A or random wire) the spikes show up even if the LNA and mixer gain is turned off.
        My unit has a frequency error of 2.6ppm by using the 10mHz WWV time signal USB/LSB method and also the 162mhz weather radio stations. When I set the error to 0ppm the spikes are centered on EXACTLY 12, 24 36, etc… 444mHz. If it was from the USB cable I think it would be offset when it is set to 0ppm and centered on 2.6ppm.
        Also when I connected the dongle directly to my PC it does the same.
        So I believe this noise is somehow derived from the local oscillator.

        • admin says:

          Hello Jack

          Thank you for taking the time to have a look. Certainly you should not be getting excessive noise as you describe at 12MHz and the associated harmonics.

          I am wondering if you can do one one test before I replace the unit for you?

          If you have another computer, could you please try it on there? I have had, on a very few occasions, problems with emissions due to either the host’s lack of EMC protection on its USB ports, or indeed, the USB cable itself.

          The FCD+ itself is compliant with both FCC and CE emissions standards, but it is of course possible that something may have failed in the unit itself, and if that;s the case of course I’ll replace it for you.

          In the meantime, please don’t hesitate to email me at g6lvb at amsat dot org.

          Many thanks, Howard

          • Jack says:

            I’ve tried this with an old AMD Athlon XP 1500+ laptop which just barely runs SDR Console v2, but it is just the same, only with tons of dropouts due to it being underpowered. I can still see the spikes around 12mhz and hear the tones when using AM.

          • admin says:

            Hello Jack

            I’ve sent you an email. I think you have a faulty unit.

            Thank you for the time you’ve spent checking it out, it’s appreciated: we have so few returned units I like to make sure that we check everything out first before wasting your time going to the Post Office.

            Anyway, if you haven’t received an email from me regarding a replacement, please let me know.

            Many thanks, Howard

  2. Bodo Heyl says:

    Hello Howard,

    is there any possibility to reduce the center spike? (firmware?)
    For example the spike is quite big under MAP65, less with HDSDR.


    • admin says:

      Hello Bodo

      It depends to a large extent on the functionality of your host software: in the old FCD I offered the option of manually tuning out the DC and I/Q imbalance on the device itself, but typically the software offers this nowadays, and certainly SDR Sharp for example has an excellent DC spike reduction algorithm. With analogue downconversion, the centre spike can never be fully removed due to LO phase noise, but you should be able to remove most of it in software.

      Many thanks, Howard

  3. gianfranco says:

    will it work on windows 8???

    • admin says:

      Hi Frank.

      Certainly. Windows XP SP3, Vista, 7, 8 and either 32 or 64 bit.

      It also works on Linux and OSX, 32 or 64 bit, although you are a bit more limited in host software options particularly on OSX.

      Many thanks, Howard

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