Wide-band WebSDR in Enschede, the Netherlands

		Amateur radio club ETGD PI4THT		Faculty for Electrical Engineering, Mathematics and Computer Science
		Wide-band WebSDR

On this page you can listen to and control a short-wave receiver located at the amateur radio club ETGD at the University of Twente. In contrast to other web-controlled receivers, this receiver can be tuned by multiple users simultaneously, thanks to the use of Software-Defined Radio.

This site, which in 2008 was the very first WebSDR site ever, was finally reactivated in July 2012 after an interruption of more than 1.5 years; read also the old news since then.

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 some pictures. 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.

Other services available on this system:

WSPR reception

Chirp signal reception

Entire day waterfall display

Questions and remarks about this WebSDR can be sent to the developer and maintainer: pa3fwm@websdr.org (but please check the FAQ first).

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Bandwidth:
? kHz @ -6dB; ? kHz @ -60dB.

Or drag the passband edges on the frequency scale.

Waterfall view:

Or use scroll wheel and dragging on waterfall.

Speed:
Size:
View:

? dBm; peak ? dBm;
mute squelch autonotch
Volume:

Signal strength plot:

Logbook: Note: time, frequency, your name/call, and DXCC information are added automatically.
View the last 20 lines of the logbook, or the entire logbook (ctrl-click for new tab/window).

Station information:
Lookup in databases:

Chatbox:
This chatbox is intended to discuss the operation of the WebSDR. Please keep the discussion civil and polite; that also means no swearing ("four-letter words").
The operators of this site disclaim any responsibility for text appearing in this chatbox.

Please keep in mind this chatbox is shared with often hundreds of users; don't use it for chatter; use it ONLY for messages about the operation and use of this WebSDR, and about the signals received with it.

Statistics: