http://websdr.ewi.utwente.nl:8901/
The system is currently composed of a "Mini-Whip" antenna, a homebuilt SDR board (as pictured; see here for background) which samples the entire shortwave spectrum and sends all of this via a gigabit ethernet link to a PC, where a special version of the WebSDR server software processes it. The Mini-Whip is based on a design from PA0RDT (google finds it); see here and some older pictures here. The active receiving element is about 5 by 10 cm large. Such an antenna only works well with a good grounding; ours is on top of a 20m high building, the upper part of which is all metal.
When you zoom the waterfall
Example: China Business Radio 2 on 11740 KHz AM mode
In red color are the AM broadcasting bands
In green color the amateur radio bands
This is the waterfall from 100 kHz to 29 MHz
To identify a radio station on shortwave, click on STATION INFO
Click again on STATION INFO
You have information about the radio station on 6085 kHz
You can see it's not difficult to use this WEB SDR
It's FREE
You can also listen to amateur radio operators
I have listened to 240 DXCC entities on amateur radio bands in only 2 years
Utility stations, etc
Amateur radio on 11 meter band in USB mode (28 MHz)
Utility station in RTTY
Marine weather data sent from Pinneberg, Germany. The data is transmitted via Radioteletype, more commonly known by its abbreviation RTTY. For more details on how this transmission method works, please consult the Wikipedia page on this subject.
Have fun with this WEB SDR or KIWI SDR
You can also listen to longwave radio stations and medium wave.
Radio Caroline 648 kHz
Click on MWLIST.ORG
Good DX and 73 de Frank SWL F14368
I have a blog with all the radio stations I have listened to in a few years
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