Submit a Story/Contact

If you would like to submit something that relates to cheap SDR (a project, blog post, something interesting you have found), please email us at [email protected].

We will look at your submission and if we think it is a good fit for our blog make a summary post about it, making sure to link and credit your original source. If you don't have your own website or blog, don't worry, just write about your project in an email and we will host any images or documents related to your project for you. Usually we will get to your submission within a few days.

Please note that we will not accept payments or incentives in return for any type of post except for product samples for an honest review. If you are interested in writing a non-commercial guest post for us, please also contact us on the above email address.

Product/Shipping Support

If you have a general question about RTL-SDRs or SDRs or third party software we ask you to please ask in our forums. If you email us we may not respond to questions about third party software as this should be asked in the forum.

If you need troubleshooting support please first ensure that you have been through our Quickstart guide and the troubleshooting section on it, as well as our V3 users guide. Common questions like how to use the HF mode and how to activate the bias tee are explained on the V3 users guide. 

If you have a question about shipping of an item please first read the shipping policy on our store and see if it answers your question. The shipping information is just under our product listings. If it is a request for tracking details please first check your old/deleted/spam mails for the order confirmation email which contains the tracking details. There will have been two emails from our email at [email protected] that contain tracking details, and you may also receive a third mail from our logistics company with the same tracking details.

If you suspect a lost postal item please contact your local postal agency first and inquire there. They have more information than we have. If they confirm it as lost or not received after a long time then please let us know and we can open an investigation on this side as well. Usually we must wait at least 6 weeks from the date posted before we can open a lost parcel investigation.

For everything else such as confirmed lost postal items, warranty claims and support inquiries that aren't covered by the quickstart or troubleshooting guide then please contact us at [email protected]. We aim to always reply within 1-2 business days. If we don't respond within 3 business days then the mail may have gone to our spam folder. Please try to email again using different keywords. We do check our spam filter once a week just in case, but some messages could still be missed. Remember, if you have questions about third party software, please ask in the forums only.

Posted in


  1. Dan

    I have a Yaesu FT 950
    Want to Plug a Cable into the RS232 CAT Port & with the USB Connector on the other End be able to have a Spectrum Monitor Display.
    I do not want anything complicated or that is high maintenance.

  2. Paul B

    I ordered and promptly received a V3 dongle, but had a bit of a minor hardware issue. Two emails later, my problem was resolved and I am extremely happy with the product and support. Performance-wise, it’s better than any other dongle I’ve tested, on HF it works very well, and on all frequencies, it is devoid of the ‘funnies’ other dongles exhibit.
    Thanks for the great product, and product support. I happily recommend the product and company based on my overall experience.

  3. Ben

    I ordered thru your online store last nov 7.
    the destination is philippines and the item is coming from china.
    tracking the parcel/item. currently the item is london as of Nov 20.
    it that the usual route?

    • admin

      Hello, thanks for the order. With the international post service sometimes the routing can be a bit weird especially since the pandemic took away many direct flights. We can’t control the routing – these decisions are entirely up to the intl. post co-op. But packages do often transit through London, so that is normal.

    • Lori

      Ben, did you eventually get your order? My package has been sitting in London for a month now with no updates… 🙁

  4. sting3r

    I have ordered this product through amazon….the rtl-sdr bundle and twice it has been shipped missing parts. Dont waste your time with this seller….they dont inspect orders at all.

    • admin

      Hello, apologies as in the previous Amazon batch there was a small percentage of bundles that had missing antenna parts due to inexperienced packing staff. However, new shipments coming in already have these issues resolved.

      There is a lot of pieces inside our sets – many more components compared to what is given by others sellers who price sets at a similar cost. So the chance of one set missing a piece is increased with each additional piece that we include in the set. Even though we do QC every set human error happens. However, i’m confident that the overall packing error rate is low, and of course if there is a defect or missing piece we will definitely replace it ASAP if we’re contacted.

      I believe that you have already contacted us on Amazon, and we are just awaiting your address details in order to send a replacement.

    • Kev

      I can tell you that I have ordered many times from rtldsr and only once did I receive a missing piece last month. After contacting rtlsdr on amazon, two days later I had a second entire dipole antenna SET for free. Not even just the missing piece they sent the whole damn SET. Shit happens but they made it better. Now if only I could say the same about trying to get warranty from another sdr store that will remain unnamed for now….

    • Anonymous

      I tend to agree, until someone convinces me otherwise. I kept wondering if the SW was infecting my PC. And the guide was just trying to get me to use someone else’s SW.

      • n3cga

        Okay… Let’s be fair. I got mine to work last night; I was tired and frustrated, but kept at it. A confusing thing to me, I think, was the apparent extraneous information in the Start-up User’s Guide and all of the SW files that are extracted; but it works if one calms down and reads the configuration instructions. Looking forward to playing with the SW and learning more how to use it and what the capability is. It seems like a radio tinkerer’s dream; the technology is fascinating and definitely cheaper than a Flex Radio. The Forum looks helpful.

        • admin

          Hello, thanks for the review. Over the years we have continually refined the guide clarifying the most common issues. Could we please know which information was seen to be extraneous in the quickstart guide?

  5. Richard Davidson

    following the instructions on gets me two unzipped files that norton swears there are two heurestic viruses. I cannot even run them again to get the spelling of the virus names.Windows 7

    Sooo, I tried it on my android phone. I get good reception. RTL-sdr runs, but gets very hot.

          • Paddy

            Odd someone edited my post and changed the HASH from
            56ba670278 14c3c523754aa 266b9d2752a 2dd8880c64 b3689aa5bb 11b820fcf2 ( ) to
            de6bbbe162 854272668b4c3 e31cefdc636 3cf7eef688 2cabe0c650 6e18630852 ( raxp_RTL-SDR Panoramic Spectrum Analyzer.7z )

              • Paddy

                I used to believe in using URL shorteners, but since I found out that they are used to collect metadata to sell, I mostly use full URL’s so that at least people who care (which is a very small number) know what site they are clicking on with a link. Next time I’ll use a “a href” html tag to reduce the amount of text, which I should have used.

  6. Lawrence Gordon

    Good Evening,
    I just purchased 2 of your (yes yours) units via AMAZON, and would like to know what the current consumption is.

  7. Shane

    Hi, I have just sent you an email re: DSD interface with SDR# as its not working. Followed your videos exactly. The email has a picture attached.



  8. landry


    I would like to know how to make kukuruku work with the current Linux system version 20.04 of lunbutu, unbuntu … if you have a solution on the installation and the configuration I am taker thank you for your help

  9. larry cagle

    I have five of your wonderful little RTL-SDR dongle radios which we use for Amateur Radio Meteor Scatter Research. I would buy more of them if I could find a way to use it as a frequency selective signal strength indicator. I need the data that produces the signal strength in db from the s-meter function. I am using HDSDR for the 5 i have now but i would use any software i could get to stream the signal strength data and time stamp into a file or out a port of some kind so it could be recovered. I am typically running in USB or CW mode with 2.7 khz or 200 hz filter so all the info i need from the stream is just the continuous output of the signal strength, preferably in db.

    Thanks for a great little product that has never let us down.

    Larry, K4WLO

    Linux or Windows acceptable

  10. Anonymous

    Geez, the body font on your site is nearly UNREADABLE. Just remove the font-weight: 300 from the CSS, and all will be well . . .

    • admin

      Hello, thanks for the order. Current pandemic processing time is about 2-4 working days. But your country is currently very difficult to ship to due to the pandemic, so we are searching for a shipping method that still works. If none exists, we’ll issue a refund.

      • ply4me

        thanks sir for your reply actually i just order some stuff from aliexpress and they all get shipped ,
        Regarding your order number: ******002386 , we have shipped your item(s) via Cainiao Super Economy for Special Goods and the tracking number is LP001734738 ,
        try this service sir or any you find work .
        Thank you

  11. Morrison Robert A

    Amazon does not have your RTL-SDR (RTL2832U) dongles. They seem to feature only NooELEC components. Did I miss something? Thanks. Rob

    • admin

      Due to COVID-19 our shipment of new stock is significantly delayed. We are currently waiting for US customs to clear the goods (they are delayed too), then once it arrives at the warehouse we will begin selling on Amazon again.

  12. Conundrum

    Hi, also noticed the 1.4 GHz problem when hot. I’ve blobbed both chips with low temperature solder, but not sure what else to try.
    Is there a way to make a fan which doesn’t interfere with the radio? My cunning idea is to sync the clock with fan rotation so that the interference can be “tuned” so as not to appear in the band of interest.

    • admin

      The V3 shouldn’t have a problem at 1.4GHz, unless it’s really really hot in your environment. If you’re talking about a generic model, best to sink it to a piece of metal using a thermal pad. But a small PC or desk fan really shouldn’t cause noticeable interference.

  13. Michael Blaine

    Can I run two rtl-sdr dongles on one computer simultaneously each using different software? (Window 7 system)

    • Angus

      yes you can as long as each dongle has a different serial number. Serial numbers can be changed via rtl_eeprom. I am running 3 dongles on a win 7 machine without issue. good luck.

  14. Steve Hubbs

    Please help. Cannot receive HF. Using HDRSharp with a 50ft long wire. Connected to a 9 to 1 balun. Can tune across the band, but not receiving any short wave of WWV signals at all, just background static. When I go to the FM band, the sensitivity is very low, only very strong signals come through.
    Thanks for any help that can be given. I am new to SDR, more familiar with the old “boat anchor” type communications receivers.
    Again, thanks

    • admin

      What SDR do you have? Did you enable direct sampling mode for HF reception? And for FM, have you been adjusting the RF gain? By default the RF gain is set to zero.

      • Steve Hubbs

        rtl-sdr v3 using gqrx, current version, on rpi3 using raspian. Able to tune HF frequencies with no problem, but cannot receive stations. Funny thing is, at first I was able to get a few stations out of the tropics, but no longer able to. It was at this point, I noticed only the strong FM stations came in. I don’t know what I could have done wrong. I thought it would be a case of installing software, doing updates, plug in, and go. Like I said, I’m old school, very old. First SW radio was a transoceanic portable then a Collins 5iJ. Very old school. Any help in getting this to work would be very much appreciated.

          • Steve Hubbs

            Did the direct sample instructions, which enabled me to tune HF. Did make use of the RF slider to see if that helped. Didn’t really help. Not even able to receive any Ham operators, very odd. Did notice that the unit was running very hot as opposed to running warm. Ordered another unit, should be here tomorrow. Any thoughts on what I may have done wrong? Oh, and the voltage going to the dongle varies between 4.72 volts and 4.86 volts.

  15. Celia Hahn

    Has any NOAA satellite ‘listening’ software been ‘upgraded’ to be accepted by a machine running the latest Apple OS “Catalina – V10.15. It needs to be 64 bit compatible. I am using CubicSDR at the moment to to listen to terrestrial FM.
    Is there any APT software that will work on this type of MAC set-up?
    Thanks in advance for your attention and cooperation.
    I have already ordered your book.

  16. Virender

    Hi admin,

    Sdr-console added bias-t option for RTL-sdr v3 dongle in there new updates. It’s good features now I can enable/disable bias-t while using dongle.

  17. Skains

    I hope you get your product instead. I’ve owned a lot of radios and paid a lot more for them, and this has been the most fun by far. Sucks you had some trouble but I bet you will love it when you get it.

Leave a Reply to Dan Cancel reply

You may use the following HTML:
<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

This site uses Akismet to reduce spam. Learn how your comment data is processed.