In ZIYUN KiwiSDR Kit,Covering shortwave, longwave and AM broadcast bands in the 10 kHz to 30 MHz spectrum range,Widely used in a variety of practical workstations and amateur radio transmission

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 available in two versions: the cape alone and a more complete version including BBG, enclosure and GPS antenna.

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.

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
Automatic frequency calibration via received GPS timing.
Extension interface for adding decoders and utilities.

Specification
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.
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.

Part List
1 * KiwiSDR Board
1 * Beaglebone Green
1 * Unassembled enclosure
1 * Skyworks SE4150L GPS front-end antenna
1 * Micro-SD Card