Slashdot Mirror


User: afidel

afidel's activity in the archive.

Stories
0
Comments
11,418
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 11,418

  1. Re:Cook Your Neighbors on FCC Allows Mix-and-Match Wi-Fi Antennas · · Score: 1

    There is no way to boost even 200mW into a 50W ERP beam. That much power gain would mean tightening the beam to smaller than the wavelength of the signal. The most you are going to get out of a typical 50mW card is around 4W with a high gain yagi antenna which has a beam width of a couple degrees.

  2. Re:Cook Your Neighbors on FCC Allows Mix-and-Match Wi-Fi Antennas · · Score: 1

    no, you missed the OR, microwave ovens tend to range from 500W to 2100W.

  3. Re:MREs and dirty water on Just Add, Umm, Water · · Score: 4, Informative

    MRE's are SO much better than C or worse yet K rations that it's not even funny. Hell MRE's are better than a lot of the civilian dehydrated foods I eat while mountaineering (they have a lot less packaging so more food per ounce). If I had to I would piss in a canteen and use my Pur Scout on it to hydrate food, hell I HAVE done just that =)

  4. Re:Clearly Illegal? on FCC Allows Mix-and-Match Wi-Fi Antennas · · Score: 1

    Well 15C 15.203 says Further, this requirement does not apply to intentional radiators that must be professionally installed, but professionall installer is not defined in 15C 15.3 which is definitions for Part 15.

  5. Re:Cook Your Neighbors on FCC Allows Mix-and-Match Wi-Fi Antennas · · Score: 2, Informative

    No, you are never going to get enough power out of a Part 15 device to do any damage. In fact I've stood in front of an antenna powered by a 200mW radio which had WAY more gain then you can legally have for an 802.11b fixed point installation and there was zero damage. The RF engineers said that so long as the power was under 50W there was basically zero chance of any damage, even that extreme setup only put out around 5W. Microwave ovens operate by bombarding hundreds or thousands of watts of energy into a relativly small volume of food. You could accomplish the same amount of cooking if you could push a resistive element the same amount of power with the same efficiency.

  6. Re:Clearly Illegal? on FCC Allows Mix-and-Match Wi-Fi Antennas · · Score: 1

    Actually it's part 15, not 13, and there is only a single sentence ( 15C 15.204(c)) which might make it illegal to modify the antenna on a part 15 device. I would have to see the actual new sections to see exactly how the rules are changing, but my guess is that they are authorizing all antenna's with less gain then the highest gain antenna tested with that particular unit. This is a GOOD thing since rarely would a lower gain antenna alter the signal in a manner that would make it more likely to interfere with adjacent spectrum. Btw this will have zero negative effect on the variety of antenna's, right now for an antenna to legally be sold as compatible with a wireless device it must be tested as a bundle with that device and the antenna swap must be performed by an authorized installer.

  7. Ok on FCC Allows Mix-and-Match Wi-Fi Antennas · · Score: 1

    so they struck 15C 15.204(c) which is the only provision which might even potentially make it illegal to use an additional antenna (all other regulations are about sale, distribution, and marketing). Besides which 15C 15.23(b) already hinted that you could build/modify your own equipment so long as you made a good faith effort not to interfere.

  8. Chewbacka plantiff? on Groklaw Debunks SCO's ELF Heist · · Score: 5, Funny

    I mean we have the Chewbacka defense, is SCO modeling a new plantiff strategy, the Chewbacka complaint?

  9. Re:in any stone? on 3D Printing in Stone, or Copy a Sculpture in Rock · · Score: 1

    A new (fifth)* allotrope of carbon was recently found. It is a spongy solid that is extremely lightweight and, unusually, attracted to magnets. The inventors of this new form of carbon -- a magnetic carbon nanofoam-- say it could may someday find medical applications (see review article from Nature)
    linky

    * They ignore white carbon which most other sources agree was the fourth form.

  10. Re:in any stone? on 3D Printing in Stone, or Copy a Sculpture in Rock · · Score: 1

    Correct, diamond is one of the six mineral allatropes of carbon. There were origionally only three known allatropes:amorphous,graphite and diamond. In 1969 white carbon was added to the list. Buckminsterfullerene's were added in the 1990's. Finally a new form was found late last year which AFAIK has not yet been given an official name.

  11. Re:The other way around? on New Numbers on Linux Market Share Soon · · Score: 1

    That's truely scarry, 20% of net connected computers are running a Win9x varient. No wonder spam is such a problem, people won't even get off of an old vastly inferior OS, why would they bother to run patches?

  12. Re:sooo? on U2 Threatens to Release Album Early on iTunes · · Score: 1

    Yeah, the editors of Rolling Stone and the studio engineers who also participated in the top 500 list have no idea what good music is.
    /sarcasm

    Just because you don't happen to like the same music doesn't mean they are wrong. Personally I don't like half the top 100 but so what? I never understood the fascination with Elvis other than him being the first popular rock and roll artist, yet I understand that his music is generally considered to be some of the best of all time and with so many people saying so I guess I must just not get it. Btw I have about as diverse musical preferences as you can get, it's not unusual for me to go to a heavy metal concert and a classical orchestral concert on back to back nights =) I didn't simply pull those numbers because they were numbers, rather I used them to show that U2 has done something at least worthy of praise since the Joshua Tree.

  13. Re:sooo? on U2 Threatens to Release Album Early on iTunes · · Score: 4, Informative

    Hmm, you forget:
    Achtung baby, 1991 #10 on rolling stone readers alltime best albums list 2002, #62 on the editors top top 500 alltime albums
    All that you can't leave behind, 2000 #16, #139
    Zooropa, 1993 #70, -

    All that you can't leave behind is probably too high on the reader list due to the proximity between release and poll time but the other two definitly earned their spots.

  14. Re:sooo? on U2 Threatens to Release Album Early on iTunes · · Score: 2, Insightful

    You imply that U2 has never had a good album without the machine. I would definitly not agree with that. The Joshua Tree is one of the top albums of all time.

  15. Re:Interesting on Ars Reviews AirPort Express · · Score: 1

    Hmm, the transfer to the airport express uses the Apple lossless codec (so says the article), I wonder if they wrap it in a FairPlay style wrapper where it's encoded on the iTunes PC and sent to the Airport Express for decrypting and decompression, if that's it then that little bugger has quite a bit of CPU power for such a small device that also does wireless, DHCP, ethernet bridging, etc.

  16. Re:Stupid fears.... on Democratic Convention Computer Security Threat? · · Score: 1

    Yeah, like I can't compromise a laptop over the wireless connection, setup remote desktop, and do the bridging myself. Duh, of course I can. Hell if you know windows well enough you can just do the bridging via remote registry (though that would take some planning and testing).

  17. Re:Hey... on Democratic Convention Computer Security Threat? · · Score: 1

    Probably people with more business sense then putting up a Bush banner across from the convention and closing shop during what will probably be that spots bussiest week in history?

  18. Re:Stupid fears.... on Democratic Convention Computer Security Threat? · · Score: 2, Informative

    So... let me get this straight... they are going to connect to my laptop's wireless NIC, and then piggyback onto the wired connection? Riiiiight... This would be tough to accomplish... even in Windows.

    Yes, because clicking on bridge connection is SO difficult *cough*.

  19. Re:Not a realy problem on Democratic Convention Computer Security Threat? · · Score: 3, Interesting

    Uh, so they are going to ban laptop's? As the article points out over half of laptops sold in the last year have WiFi built in. Thanks to XP's auto-connect for WiFi if a person was able to setup an AP outside they could surely find an XP laptop which could be compromised which was plugged into the wired network. THAT is what the article is talking about.

  20. Wonder if this applies to DVD players on UK High Court Rules Modchips Illegal · · Score: 2, Interesting

    Since region free and Macrovision free players are so plentiful in Europe that they are sold in supermarkets I wonder what would happen if this logic were applied to DVD players?

  21. Re:One down on SCO's claims Against Daimler-Chrysler Thrown Out · · Score: 2, Interesting

    Uh, IBM is three times the size of Diamler Chrysler ($145B market cap vs $45B) and is the largest IP holder in the world (by a large margin). They have more patent and IP attourneys on retainer that probably the entire auto industry combined. SCO is not afraid of losing, they are hoping that one of the torrent of suits would pay off in a jackpot win, in the mean time the tops suits were also enriching themselves by pumping the stock by selling this stupid story to investors and selling their options.

  22. Re:Um, this is a decent patent on Microsoft, Apple Sued Over Software Update Patent · · Score: 2, Interesting

    It looks to me like they asked for and recieved a patent on the ability to update software remotely regardless of the actual method used or the target device, they list:
    pre scheduled
    unscheduled
    user scheduled
    server scheduled
    etc

    and for devices they list:
    computer
    cable television controller
    video game player
    information kiosk
    wired personal communicator
    wireless personal communicator
    personal information communicator
    personal digital assistant
    information appliance
    and system controller


    How the heck can they give a patent that covers the updating of software across the entire electronics sector? It's not like these guys were the first to think of remotely updated software, as their long list of prior art shows.

  23. Re:Set up on The New Nvidia 6800 Ultra DDL Graphics Card · · Score: 2, Interesting

    No, there are the same number of cables(2), it's just that more of the pins are actually used for digital data. You might run into a problem if a cheap cable was made assuming single link DVI but any cable which follows the spec should work fine. The interesting part is that there is no KVM capable of switching dual channel DVI AFAIK.

  24. Re:A dream... on The New Nvidia 6800 Ultra DDL Graphics Card · · Score: 1

    probably still comes in at less than a comparable Sun or SGI workstation without a display =)

  25. Re:Neat, Now if only on Cheap Cell-Phone Detector · · Score: 1

    Did you read the comment you were responding to? He specifically talks about jamming....