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Urban Wireless - Your one stop information portal for wireless networking, connectivity, and security goodness.

The below wireless news is from a number of sources including: Hack a Day and The Register.

 
Serval = Free Mobile / Cell Phone calls, for the World!
Thursday, 08 September 2011 08:53

Communicate anywhere, any time … without infrastructure, without mobile towers, without satellites, without wifi hotspots, and without carriers. Use existing off-the-shelf mobile cell phone handsets. Use your existing mobile phone number wherever you go, and never pay roaming charges again.

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Google eyes business service in latest Fiber trials
Friday, 18 April 2014 09:20

Gartner critical capabilities for enterprise endpoint backup

Google is in the planning stages of a project to offer its Fiber internet service to businesses in northwest Kansas City, Missouri.

Local paper The Kansas City Star said that the company is informing businesses in that area of city that they are eligible for a limited trial of the service, which will take place in coming months.

The company has also set up a questionnaire site for local businesses which will gather information for the company ahead of a possible launch. The page is being offered to firms who are on Google's

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Virgin Media so, so SORRY for turning spam fire-hose on its punters
Thursday, 17 April 2014 20:18

Gartner critical capabilities for enterprise endpoint backup

Virgin Media has apologised for a blunder that resulted in some of its customers being bombarded with a deluge of emails.

The broadband biz emailed Brits who use its virgin.net email service, which is provided by Google, to warn them of some changes: from the end of April, Virgin Broadband customers won't be able to log into Google websites, such as YouTube, using their virgin.net addresses.

But any email replies to that message were sent to everyone on the mailing list: the email address the update was sent from acted as a conduit

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NBN Co in 'broadband kit we tested worked' STUNNER
Wednesday, 16 April 2014 17:14

5 things you didn’t know about cloud backup

NBN Co, the entity charged with building and operating Australia's National Broadband Network (NBN), has let world+dog know that one test of VDSL delivered over fibre-to-the-node (FTTN) worked.

You can read the announcement here if you want: it explains that the test achieved “delivered raw download speeds of 105 megabits per second (Mbps) and upload speeds of 45 Mbps.” We suggest you also read between the lines because the announcement is scandalously scanty because it omits discussion of topics including:

  • Whether the test in any way resembled a real-world scenario
  • Whether the
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Measuring Frequency Response with an RTL-SDR Dongle and a Diode
Friday, 18 April 2014 10:00

[Hans] wanted to see the frequency response of a bandpass filter but didn’t have a lot of test equipment. Using an RTL-SDR dongle, some software and a quickly made noise generator, he still managed to get a rough idea of the filter’s characteristics.

How did he do it? He ‘simply’ measured his noise generator frequency characteristics with and without the bandpass filter connected to its output and then subtracted one curve with the other. As you can see in the diagram above, the noise generator is based around a zener diode operating at the reverse breakdown voltage. DC blocking … Read the rest

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