KiwiSDR Board

SKU SS-110060489

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 GreenorBeagleBone 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.huwebsite.



  • 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 our Githubpage.

  • For technical discussion, please come to our Forum.

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