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      KiwiSDR Kit
      KiwiSDR Kit
      KiwiSDR Kit
      KiwiSDR Kit
      KiwiSDR Kit
      KiwiSDR Kit
      KiwiSDR Kit

      KiwiSDR Kit

      SKU 110060490
      Read all 10 reviews
      $299.00
      32 Available
      $269.10/10pcs+

        I accept the restriction

      This development board can be only used for prototyping, it cannot be built into a product for commercial distribution. It cannot be re-sold or used as part of a production environment.

      Maximum Qty: 5

      Description

      KiwiSDR is a software-defined radio (SDR) covering shortwave, the longwave & AM broadcast bands, various utility stations, and amateur radio transmissions, world-wide, in the spectrum from 10 kHz to 30 MHz. The KiwiSDR is a custom circuit board (cape) you connect to the BeagleBone Green  or  BeagleBone Black computer. You simply add an antenna, power supply and network connection. The KiwiSDR is available in two versions: the cape alone and a more complete version including BBG, enclosure and GPS antenna. Both versions include software supplied on a micro-SD card.


      An HTML5-capable browser and internet connection will let you listen to a public KiwiSDR anywhere in the world. Up to four people can listen simultaneously to one radio — each listener tunes independently.

      Try it right now! Listen to KiwiSDR registered on the sdr.hu  website.


      Features

      • 100% Open Source / Open Hardware.

      • Browser-based interface allowing four simultaneous user web connections.

      • Each connection tunes an independent receiver channel over the entire spectrum.

      • Waterfall tunes independently of audio and includes zooming and panning.

      • Multi-channel, parallel DDC design using bit-width optimized CIC filters.

      • Good performance at VLF/LF since we personally spend time monitoring those frequencies.

      • Automatic frequency calibration via received GPS timing.

      • Easy hardware and software setup. Browser-based configuration interface.

      • Extension interface for adding decoders and utilities.




      Try it right now! Click to listen to a test site in Canada, Sweden or New Zealand




      Technical Details

      WeightG.W 310g    
      BatteryExclude
      SDRCovers the 10 kHz to 30 MHz (VLF-HF) spectrum.
      Web interface Based on OpenWebRX from András Retzler, HA7ILM.
      Demodulation modesAM, AMN, LSB, USB, CW, CWN, NBFM.
      Extensions at presentWSPR viewer/decoder, IQ display, Loran-C viewer.
      RF antenna connectorSMA and terminal block.
      Integrated software-defined GPS receiverFrom Andrew Holme's Homemade GPS Receiver.
      GPS receives the Navstar systemon L1 frequency 1575.42 MHz.
      GPS antenna connectorSMA, 3.3V powered for active antennas.
      Voltage+5V DC, 2.1mm jack, center pin positive.
      Current1.5A including Beagle, KiwiSDR powers Beagle through header connectors.
      DimensionsKiwiSDR PCB 117mm * 55mm, SMA connectors additional.

      Part List

      KiwiSDR Board1
      Beaglebone Green1
      Unassembled enclosure1
      Skyworks SE4150L GPS front-end antenna1
      Micro-SD Card1

      Documents

      Reviews

      Questions and Answers

      SUBMIT
      0
      For the moment I have given up as I can't get rid of them. They are still there when I have removed antenna and all my peripheral circuitry, leaving just the power cable (with large ferrite ring), and the CAT6 cable (with FT240-31 rings at either end) with the antenna input shorted out. In fact I surmise that the unwanted signals come directly from the IP network communication. Has any one else seen this? And better still has anyone found a way around the situation/problem??
      on Aug 15,2017
      Replyupvote ()
      In all the setups and testing I've done I've never seen any spurs with the antenna disconnected. It's always just a flat noise floor. So could this be differential noise coupled into the Kiwi's ground plane via the power supply ground? What does your power supply do with the +5V ground? Does it float or get coupled back to the mains ground? You might try different different grounding configurations and see if that helps. Your toroidal common-mode choke won't do much if the noise is differential mode flowing back on the power supply ground.
      on Aug 21,2017 03:44 AM
      Replyupvote ()
      There is pretty good evidence now that this is RFI/EMI from the Ethernet switch or cables. Please see the related topic on the Kiwi forum.
      on Aug 30,2017 03:33 AM
      Replyupvote ()
      And Seeed, will you please fix the Question and Answer reply text so special characters don't show as HTML escape sequences! lol
      on Aug 30,2017 03:34 AM
      Replyupvote ()
      Here's a blog post where a 20 dB improvement was made by using a metal-case Ethernet switch and long, shielded CAT6 cables: https://g0luj.blogspot.com/2018/01/reducing-ethernet-interference-by.html
      on Jan 02,2018 18:33 PM
      Replyupvote ()
      The above link has moved to: https://www.g0luj.com/?p=22Also see: https://www.g0luj.com/?p=230
      on Jun 09,2018 07:21 AM
      Replyupvote ()
      Reply
      1
      Is a power supply required for simple HF listening, or is the voltage from the usb enough? Also, I/O can be through ethernet or USB, correct?
      on Jun 05,2017
      Replyupvote ()
      Hi Dan. Power has to be applied to the Kiwi's round (2.1/5.5 mm) DC jack. 5V @ 1.5 to 2A. USB power on the BBG can't handle the current (it won't even power-up). See here: http://kiwisdr.com/quickstart/index.html#id-power
      on Jun 06,2017 07:18 AM
      Replyupvote ()
      Thank you. Just one follow up: Will I need a preselector/high pass filter for strong AM interference?
      on Jun 19,2017 03:18 AM
      Replyupvote ()
      Hi Dan. Yes, it is possible you will need an HPF. Depends on how strong your local AM BCB signals are. See here: http://kiwisdr.com/quickstart/index.html#id-overload
      on Jul 02,2017 18:29 PM
      Replyupvote ()
      Reply
      0
      how to assemble the kiwisdr kit case there were no instructions in the box
      on Jul 19,2017
      Replyupvote ()
      VA3ROM, sorry I've only seen your question just now (July 27). I don't get a notification for these unfortunately. There _should_ have been a printed "quick start" instruction sheet in the box with enclosure assembly information. You can find it online here: http://kiwisdr.com/quickstart/quickstart.pdf Please email support@kiwisdr.com with any questions. Best regards, John, ZL/KF6VO, KiwiSDR
      on Jul 28,2017 04:25 AM
      Replyupvote ()
      Reply
      0
      How do I post a review of this product?
      on May 13,2017
      Replyupvote ()
      After you've made a purchase you'll see a "review" button on the order history page. I think you also get an email asking for a review.
      on Aug 21,2017 03:47 AM
      Replyupvote ()
      Reply
      0
      Is there a customs duty for europe belgium.
      on Jan 12,2017
      Replyupvote ()
      I ordered one that shipped to Holland and it arrived without custom duties.I used the Singapore Post shipping method, the only available option for me.
      on Jan 14,2017 02:46 AM
      Replyupvote ()
      Thank you Eric.
      on Jan 14,2017 20:25 PM
      Replyupvote ()
      Reply
      0
      Got the KiwiSDR up and running with no problems initially but afterrunning for a few days the BB Green network interface has died. Link LEDdoesn't light, with no link established. No amount of power cycling orsoftware reload fixes it. Have tested network switch and cable, along withpower supply voltages. Have since removed KiwiSDRand installed on a spare BB Black I had, all works fine with it. Thesupplied BB Green appears to be faulty. How do I get a replacement?Ron nz
      on Sep 19,2017
      Replyupvote ()
      Hi Ron. If you purchased from Seeed please email techsupport@seeed.cc to get a replacement. Otherwise contact the distributor you purchased from. There seem to have been a bunch of BBGs produced with Ethernet PHY failures. John (support@kiwisdr.com)
      on Sep 22,2017 11:18 AM
      Replyupvote ()
      Reply
      0
      Here are some screen dumps of the problem I've found
      on Aug 20,2017
      Replyupvote ()
      0
      I took one of the stronger spurii showing on my RX, at 23127KHz +/-2-300Hz, and I tried and tried to reduce its level in the receiver, the spurs are about 30dB above the noise floor. Very similar spurii can be seen on several other KiwiSDR RXs accessed via the SDR.hu list
      on Aug 15,2017
      Replyupvote ()
      0
      I have a KiwiSDr with BBG running from a 5V 3.5A linear psu. After sorting out the interfacing to the network, it worked. I have a choice of two antennae, a 12m longwire, or a PA0DRT copy active mini-whip. There were a few unwanted signals to clear up with ferrite rings but as I go down towards the noise floor there are spurious signals that DON'T go away with application of ferrites or screening.Also I can see similar unwanted signals on a selection of already wired and active Web receivers.
      on Aug 15,2017
      Replyupvote ()

        View History

        KiwiSDR Kit

        SKU 110060490
        Read all 10 reviews
        $299.00
        32 Available
        Maximum Qty: 5

          I accept the restriction

        This development board can be only used for prototyping, it cannot be built into a product for commercial distribution. It cannot be re-sold or used as part of a production environment.

        $269.10/10pcs+
        • Best-sellers
        • Description
        • Technical Details
        • Reviews
        • Questions and Answers
        • View History
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