View Full Version : SDR receiver on the web
g4tut
04-26-2008, 06:36 AM
SDR receiver on the web
Take a look at this new web-based software defined radio.
Run by the University of Twente's amateur radio club in the Netherlands, the system allows you to tune over either the 40 or 80 metre bands.
What makes this system different from other web-based receivers is, that thanks to the use of Software-Defined Radio technology, this receiver can be tuned by multiple users simultaneously.
When tuning around a band, you can either enter a frequency directly, or click-drag on the frequency scale. Bandwidth can also be controlled, either by the button options, or by click-dragging on the passband edges of the frequency scale.
The web page also features a log book, a list of connected users and a chat facility. Additional bands are planned for the future.
All in all, a very impressive system, and well-worth a look. Click here (http://websdr.ewi.utwente.nl:8901/)
Don't wait all week for the news! (http://www.southgatearc.org/)
Amateur Radio News - updated daily - 365 days per year
Get our News Headlines for your Website:
http://www.southgatearc.org/rss/index.htm
Send Us Your News Items:
http://www.southgatearc.org/news/your_news.htm
kb3pne
04-26-2008, 12:47 PM
Well thankyou for the website link, not sure how this all works but it is amazing, you can tune in real time change bandwidth in real time....absolutly amazing!!
kb3pne
va7aax
04-26-2008, 02:09 PM
That was SOOOO cool!!!! Thanks so much to the University fr funding this.
I see a Lot of SoftRock $10 receivers being sold now!!!
KD5ORW
04-26-2008, 02:21 PM
This thing is awsome
KG4CGC
04-26-2008, 08:42 PM
Looks like a great resource.
W7MAX
04-27-2008, 04:38 AM
I'm not really up to speed on the SDR thing, BUT... I showed this to my Grandson and it was enough to make him want to get his ticket ( Of course a well stocked Ham Shack kinds helps too.) I showed him were to take practice tests on the QRZ site, Plus I'm reading all I can about Software Defined Radio.
Kind of like taking out 2 birds with one web site eh?:D
KB5DRJ
04-27-2008, 07:16 PM
:) This web based SDR! Works very good! is very good!
Check it out.
David KB5DRJ
W4INF
04-27-2008, 08:54 PM
Cool! Vry cool!
What is the physical location of the receiver?
How do they do this??
I need to Google 'softrock'!
WD5ABC
04-27-2008, 09:18 PM
Look for a Yahoo group at groups.yahoo.com called softrock40. I just finished building a little SDR transceiver that Tony sells there for $30, it covers the cw portion of 40m and 80m. I just got the tx going this afternoon, putting out about a watt. Very cool! You need a fairly decent computer and sound card to run it but if you already have the computer where else can you get a 2 band transceiver kit for $30? The little receiver-only kits are approx $9, and they are a great way to not only learn about software defined radios but also to get started in surface mount parts. The little bitty parts aren't as bad as I expected but at 48 I did just buy my first pair of reading glasses...
73,
Kerry
WD5ABC
KI4RTK
04-28-2008, 02:28 AM
Best thing on the internet since the dancing hamsters!
k4rjj
04-28-2008, 06:05 AM
Just joined Tony's Yahoo group and looking forward to the production units.
Wonder if the folks in the NL would mind sharing the web code?
Ronny K4RJJ
VE2ITZ
04-28-2008, 04:28 PM
Wonderful stuff!
Congratulations to the team that has developed this software!
Bravo!
:)
wb5ydk
04-29-2008, 11:24 PM
Cool website and a great idea. Here is a photo of the receiver hardware from their website: http://websdr.ewi.utwente.nl:8901/websdr-hw3.jpg
N3JQD
04-29-2008, 11:35 PM
Great software and easy to use. I can't believe that hasn't been done until now. It works perfectly. Thanks for that post QRZ.
KA3JLW
04-30-2008, 02:12 AM
Best thing on the internet since the dancing hamsters!
AWESOME!!
Better than Bowling Elves, better than the Christmas light show on the guy's house set to music, it is even better than Chocolate Rain!!!
Man - the possibilities. I read somewhere of the concept of a "reverse beacon" setup - and this could do it. Imagine you send a quick ID on some frequency and you have a 5 of these websites open, connected from 5 different locations thoughout the world and all tuned to your transmit. In an instant, you can check your own ability to "get out"...
ahhh.....
Cool website and a great idea. Here is a photo of the receiver hardware from their website: http://websdr.ewi.utwente.nl:8901/websdr-hw3.jpg
Man ! You want to talk about "Ugly Construction" ! ! ! :eek: ;) :D
I absolutely MUST get my Softrock receiver out and play with it again !
The site was really cooking tonight when I listened in. I cannot imagine how they do the multiple users, though!
73, Jim
PA5COR
04-30-2008, 08:42 AM
Hamspirit still lives here :D
wb5ydk
04-30-2008, 04:47 PM
Man ! You want to talk about "Ugly Construction" ! ! ! :eek: ;) :D
I absolutely MUST get my Softrock receiver out and play with it again !
The site was really cooking tonight when I listened in. I cannot imagine how they do the multiple users, though!
73, JimReminds me of days spend in the basement EE labs at my old university :)
wb5ydk
05-23-2008, 11:15 PM
SDR receiver on the web
Take a look at this new web-based software defined radio.
Run by the University of Twente's amateur radio club in the Netherlands, the system allows you to tune over either the 40 or 80 metre bands.
What makes this system different from other web-based receivers is, that thanks to the use of Software-Defined Radio technology, this receiver can be tuned by multiple users simultaneously.
When tuning around a band, you can either enter a frequency directly, or click-drag on the frequency scale. Bandwidth can also be controlled, either by the button options, or by click-dragging on the passband edges of the frequency scale.
The web page also features a log book, a list of connected users and a chat facility. Additional bands are planned for the future.
All in all, a very impressive system, and well-worth a look. Click here (http://websdr.ewi.utwente.nl:8901/)
Don't wait all week for the news! (http://www.southgatearc.org/)
Amateur Radio News - updated daily - 365 days per year
Get our News Headlines for your Website:
http://www.southgatearc.org/rss/index.htm
Send Us Your News Items:
http://www.southgatearc.org/news/your_news.htmThey have now added a segment of the 20 meter band to the offering. Cool software. Hear how the bands sound in the Netherlands. Check it out!