KiwiSDR – Online Shortwave Receiver

The KiwiSDR is a software-defined radio (SDR) that allows anyone with a web browser to listen to radio signals from around the world, directly over the internet.
Unlike a traditional radio, you don’t need any hardware at home – just click a link, tune the dial, and explore.

A KiwiSDR covers a frequency range from 10 kHz up to 30 MHz, which includes:

• Shortwave broadcast stations
• Amateur (ham) radio bands
• Longwave and mediumwave signals
• Utility and maritime transmissions
• Time and frequency standard stations

Because KiwiSDRs are installed in many locations worldwide, listeners can compare reception between regions and hear signals that may not be audible locally.

For a quick guide on how to use the receiver, visit the KiwiSDR User Guide.

Who is KiwiSDR for?

KiwiSDR is useful for:

• Amateur radio operators – monitor HF bands and propagation conditions.
• Shortwave listeners – enjoy worldwide broadcasts without needing large antennas.
• Students & educators – learn about radio spectrum and wireless communication.
• Anyone curious – explore signals travelling thousands of kilometres via the ionosphere.

The ZL2KS KiwiSDR

The Marlborough Amateur Radio Club maintains a KiwiSDR receiver located near Picton, New Zealand, which is freely available for public use.

Listen to the ZL2KS KiwiSDR here

This receiver is connected to carefully installed antennas in a quiet radio environment, making it a valuable resource for local and international listeners.