There may be warbles, buzzes, and whistles that seem to vary and repeat. When tuning through the bands - as with any shortwave radio - you will discover that there are some audible sounds that do not make immediate sense. So, bear this in mind when you are receiving signals from the remote location. However, you need to be aware of time differences that may affect radio propagation.įor example, when it is daylight in your location it may be night at the other location. It’s definitely fun to hear the music and voices of these far off lands received from their own backyard. Operating a radio located in another country can be both exciting and challenging. Using such a radio is truly incredible since you are operating it remotely from your own vantage point via the Web. A screenshot of a web based SDR located in Sweden is shown in Figure 2.įIGURE 2. Two popular places to find these Web radios are and SDR.hu. The dial frequency, mode (AM, SSB), audio bandwidth, and other features of the receiver are fully controlled by you. Each location has its own antenna, receiver, and connection to the Internet. If you’ve ever wanted to operate a receiver located in Sweden, Germany, Australia, Andorra, or Africa, now is your chance. World map of Web based software defined radios. Even more remarkable is that they are located in countries all around the world.Īn example of the worldwide spread of SDR radios is shown on Figure 1.įIGURE 1. These SDRs are free to use and widely available on the Internet. Web based shortwave radios are an amazing new implementation of software defined radios (SDR). So, read on and we’ll guide you through the details of how to do it. Unfortunately, employing these radios to decode data transmissions can be very difficult or impossible - unless you know the secret. Your computer and the Internet give you free access to over 100 web based shortwave receivers that you can use as if they were your own.
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