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.

If you're new to WebSDRs, have a look at the quick start guide written by G0POT.

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.

Please log in by typing your name or callsign here (it will be saved for later visits in a cookie):

It seems you are using a mobile device; click here to switch to the mobile version of this site.

It seems Java is not installed or disabled on your computer. You need to install and/or enable it for this website to work properly.
Since Java version 7u51, Java needs to be enabled separately for each website; see http://websdr.org/java.html for instructions.

Your browser does not seem to support HTML5 WebAudio; please try a recent version of Firefox, Chrome, Opera or Safari; or switch to Java.

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View: waterfallblind

Allow keyboard:

j k ← →	freq. down/up (+shift/ctrl/alt faster)
u l c a f	USB, LSB, CW, AM, FM
W w	filter wider/narrower
z Z ^Z	center/zoom waterfall
g	enter frequency
b B	change band
m V v	mute, volume up/down
t T	VFOs: toggle A/B, set A=B

Click here to start audio:

kHz   

CW LSB USB AM FM AMsync

Volume: mute

Filter: 0.40 kHz narrower wider

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squelch autonotch noise reduction

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Audio recording start

Your browser does not seem to support downloading the recording; please try a recent version of Firefox, Chrome or Opera.

 

? dBm; peak ? dBm

Waterfall zoom

Waterfall settings Memories users Chatbox Logbook Station info S-meter plot Advanced

Or use scroll wheel and dragging on waterfall.

Speed:
slow
medium
fast

Size:
small
medium
large
extra large

View:
spectrum
waterfall

Brightness:

More contrast

Full window width
"sticky"
Hide labels

Drag memories to reorder or delete.

This WebSDR is currently being used by ? user(s) simultaneously:      compact view

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 type a name or callsign in the box at the top of the page to identify your chat messages! 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.

Please calculate 3+9 =     

Logbook:

Call of station that you hear:
Comments, if any:

Note: time, frequency, your name/call, and DXCC information are added automatically.

View the last 100 lines of the logbook, or the entire logbook (ctrl-click for new tab/window).

Station information:
Lookup in databases:

Advanced settings - only change these if you know what you're doing

Noise reduction level: automatic manual

Squelchlevel:

Audio out: left both right

Gain control: automatic manual limit

Hang time:

Gain:  dB

Waterfall:JavaHTML5   
Sound:  JavaHTML5

More playback buffering

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Statistics:

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