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KiwiSDR Board - Software Defined Radio (SDR)

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  • KiwiSDR Board - Software Defined Radio (SDR)

    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.

    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.


    • 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.


    • SDR covers the 10 kHz to 30 MHz (VLF-HF) spectrum.

    • Web interface based on OpenWebRX from András Retzler, HA7ILM.

    • Demodulation modes: AM, AMN, LSB, USB, CW, CWN, NBFM.

    • Extensions at present: WSPR viewer/decoder, IQ display, Loran-C viewer.

    • RF antenna connector: SMA and terminal block.

    • Integrated software-defined GPS receiver from Andrew Holme's Homemade GPS Receiver.

    • GPS receives the Navstar system on L1 frequency 1575.42 MHz.

    • GPS antenna connector: SMA, 3.3V powered for active antennas.

    • Voltage: +5V DC, 2.1mm jack, center pin positive.

    • Current: 1.5A including Beagle, KiwiSDR powers Beagle through header connectors.

    • Dimensions: KiwiSDR PCB 117mm * 55mm, SMA connectors additional.

    Part List

    • 1 x KiwiSDR Board

    • 1 x Micro-SD card


    • For source code and issues list, please visit the Github page.

    • For technical discussion, please come to the Forum.

    • For projects that you would like to share with the community, please visit Recipe.


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