March 11th, 2010
Great videos on how one can capture data that is unintentionally transmitted by interconnecting cables.
The receiver used is a Software Defined Radio, specifically the Ettus Research USRP. The software is based on the GNU Radio suite.
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March 5th, 2010
…is available here. And I feel old looking at it.
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March 4th, 2010
This is a very funny post from Jeff, KE9V.
Dmetry and Olaf walked into a dimly lit tavern and selected a booth far in the back where they could not be easily overhead. Dmetry was a hulking 300 lbs man who had muscled his way into the lower echelons of leadership in the Russian mafia but he was most interested in disappearing a very wealthy man as soon as possible.
It goes on..
“This application includes a Trojan horse; it will offload itself from the primary application upon installation, and play hide and seek with any anti-virus measures that may have been installed” Olaf said as a perverted grin spread across his face. “Then when we are ready, we will have at our disposal 100,000 networked computers that will do our bidding whenever the signal is given”.
Dmetry wasn’t easily convinced. “But why, why should these people be willing to install this botnet?”
Olaf replied, “They have no idea what they are doing. Urmil has written an application for radio amateurs, maybe you’ve heard of these radio ‘hams’, no? They love to play with their computers and their radios but they know little about the technology behind it all. This new application will be software that permits their computers to communicate via HF radio, they are crazy for free software and shiny new baubles to play with.”
“We will tell them that this software is for a new mode of communication and it will spread like wildfire in their community. They will never be the wiser…”
So funny, but it isn’t all that big a leap to see it actually happening. Very funny, thanks Jeff.
(Of course I use fldigi, build it from source, and keep an eye on what stuff is actually leaving my machine as much as possible.)
Posted in Amateur Radio, Computing, General, Technology | No Comments »
March 4th, 2010
Recently, Hessu, OH7LZB, began the process of migrating his service to IPv6. While he isn’t finished (AAAA still to be added) ipv6.aprs.fi is up and running and usable today.
Posted in APRS, AX25, Amateur Radio, Computing, IPv6 | No Comments »
March 3rd, 2010
ARVN has just released a set of DVDs covering the presentations at the TAPR DCC. I was at the DCC last September and purchased some DVDs from Gary and I found them good viewing quality, and, being the DCC, excellent content 
Posted in Amateur Radio, Technology | No Comments »
March 3rd, 2010
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March 3rd, 2010
Bill Meara on whether black holes exist in workshops? Followed by a (very funny) explanation of what various tools are used for.
Posted in Amateur Radio, DIY | No Comments »
March 3rd, 2010
The Feb. 27 magnitude 8.8 earthquake in Chile may have shortened the length of each Earth day.
JPL research scientist Richard Gross computed how Earth’s rotation should have changed as a result of the Feb. 27 quake. Using a complex model, he and fellow scientists came up with a preliminary calculation that the quake should have shortened the length of an Earth day by about 1.26 microseconds (a microsecond is one millionth of a second). More.
Also, as a result of the earthquake, there is a lot of activity on Amateur Radio frequencies of 7050, 7060, 7088, 7095. As there is a contest next weekend, please listen carefully before using these frequencies. More.
Posted in Amateur Radio, General, Utility Listening | 1 Comment »
February 12th, 2010
Reasons why you should always carry a roll when heading into space, and how useful it truly is. Great read.
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February 9th, 2010
I have always been interested in the shuttle missions. There is, I guess a natural curiosity about anything to do with space. I’ve observed a few launches that passed through the sky’s over Ireland. I saw STS-127 on the launchpad, and then streaking across the sky over Ireland. What I hadn’t done (before yesterday) is listen to voice communications from the Orbiter directly. I’ve tried a few times, but not really persisted.
Yesterday at approximately 09:30 I snagged the following Audio Clip on 259.7MHz AM. Suffice it to say, it made my day. Many thanks to the Hearsat folks for putting up with my dumb questions. Also I must agree with Hugh, it was probably the prettiest launch I’ve ever seen.
Posted in Technology, Utility Listening | No Comments »