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  • Ferdinando Tiveron

    I am not be able to work with hf. How I do It?

    Thanks and I apologize myself for my bar english.

    iz3npz Ferdinando 


  • John Davidson

    Hello!  As noted in the product description, you need to use Q-branch direct sampling mode.  You will also need to use an antenna suitable for HF reception.  

    If you have already done the above and still have issues, please use our support center to open a support ticket along with full details of your problem, screenshots and your order number, and someone will be very happy to help!

  • Bradley Adams

    From the product description, the NESDR SMArt goes down to 100KHz, easily low enough to cover HF ham frequencies. However, the product description recommends adding a Ham It Up upconverter for better quality on HF ham frequencies. Given that those frequencies are within the native range of the SMArt, can you explain what the benefit of the Ham It Up is?

    I'm very new to radios, so hopefully I haven't missed something obvious.

  • John Davidson

    Hi Bradley!  You are correct, they can both be used for those frequencies.  However, the performance and SNR with the Ham It Up will be significantly better than that which can be achieved with direct sampling.  If you don't care about this increased performance for your particular application, you would not need to consider adding the Ham It Up for HF.  Thanks!

  • Nimrod Zarmi


    How do I use the V5 Q-branch (direct sampling mode) for LF and HF frequencies? Is it activated manually or automatically? Do I need to update the drivers?


  • Jeffrey G Oman

    Hi.  I'm 56 and brand new to this hobby but thought it would be a great idea to keep those old brain cells from floating away.  I've been working with computers for a quarter century AND thought that would give me an edge but it doesn't.  Much of the documentation uses many abbreviation I don't know and while I do have a clear understanding of light, these frequencies can be baffling when not aimed at the VERY beginner.  I have a NESDER SMART V5 as well as an ATS-20+ with all updated firmware and a bunch of antennae and connectors.  Does anyone know of a beginner's guide to the field (hopefully with a  glossary for the abreves? There's IS a great deal out the but I'm something of a manual type of person, as in RTFMS.  I've always been fascinated by radio and it looks like I picked the right time to jump in.  I used to help my ham radio friends back when dinosaurs still roamed the earth and am dang happy I don't have to climb 30' in the air for my antenna.  Anyhoooooow, I was wondering if you can help a befuddled beginner.  I'd love a book as I don't much care reading from a screen.  May the bandwidth be with you.  Jeff

  • John Davidson


    It is activated manually, and the mechanism is different for pretty much every software package.  There is no need for a driver update, however. 

    If you have issues, please contact with full details and screenshots of the problem and someone will be happy to help!

  • John Davidson


    Welcome!  There is a bit of a learning curve, but nothing to be daunted by.  There is a great deal of information to read through on our support site at, but you don't necessarily need to read through it all, either.  Another good resource would be the software manuals, like this one for CubicSDR:

    There is no substitute for experience, though.  Our recommendation is usually to get things installed with and play around with the software.  It's pretty tough to actually break anything permanently through experimentation.  Of course, if you do run into snags, feel free to open a support ticket for our team at any time!


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