[ale] Radio-frequency identification (RFID) chips

[Dow Hurst]

So if you could focus this on the street near your house or 
actually point it toward your neighbors house you could 
finally get rid of the irritating whump whump of the noise 
they listen too? ;-)
Dow


James P. Kinney III wrote:
> On Sat, 2004-01-10 at 15:39, Mike Panetta wrote:
> 
>>Speaking as an amateur radio enthusiast (KG4TTU is my call sign)
>>the FCC would frown upon that action greatly.  Microwaving the things
>>or sending out a low power short range field might be acceptable, assuming
>>it does not interfere with anything outside your yard or house, but obliterating
>>all forms of radio for 2 miles is an arrestable offense and I would highly suggest
>>not doing it, especially given the current climate of terrorism that we are in.
>>
>>
> 
> 
> I would agree entirely!! I made this discover many (many) years ago and
> was rewarded for my efforts by a brief and polite visit from the FCC. As
> I was only 16 and the use of the coils was not an intentional effort to
> jam the RF band (it was a power supply component for an X-ray machine I
> was building), I was given a list of references for shielding and a
> stern order to not use it again with out shielding. I was happy to
> comply. Especially since that process gave me access to another entire
> level of equipment to play with as I took my modified system over to the
> FCC guys to get their approval before I cranked up the system again. The
> RF shielding was good but I could really screw up a tv picture with the
> magnetic field from about 40'! 
> 
> You are absolutely correct that cranking up this type of equipment now
> might result in jail time given the current national mentality on
> security.
> 
> A much better use would be to wrap the entire mess, except for one end
> of the soft iron core in "mu metal". This will both shield the RF and
> the attenuate the magnetic field. "mu metal" may be a brand name. It is
> an alloy I used in UHV systems to block the earths magnetic field for
> sensitive experiments. A layer about 3x the thickness of heavy Al foil
> would completely block the 0.5 Gauss field of the Earth. The open end
> allows the intense magnetic pulse to escape. A mu metal cone can help as
> a directional element. The effect on large bass speakers should be
> permanent. This might help silence some cars that have had their back
> seats replaced. :)
> 
> 
>>Mike
>>
>>-----Original Message-----
>>From: "James P. Kinney III" <jkinney at localnetsolutions.com>
>>Sent: Jan 10, 2004 10:44 AM
>>To: bob at verysecurelinux.com, Atlanta Linux Enthusiasts <ale at ale.org>
>>Subject: Re: [ale] Radio-frequency identification (RFID) chips
>>
>>On Fri, 2004-01-09 at 23:59, Bob Toxen wrote:
>>
>>>On Wed, Jan 07, 2004 at 02:39:53PM -0500, Mazukna, Tomas wrote:
>>>
>>>>It is time to get some of those RFID tags and start playing.
>>>>We need a device to fry them :)
>>>>Sounds like a great idea ... New gizmo you install in you cars trunk and
>>>>it fries rfid tags on your way home from store.
>>>
>>>I agree that a microwave would be easiest.  My tesla coil will do a fine
>>>job but they are non-trivial to buy, steal, or build.  I suspect that
>>>a police radar gun will work up to some distance but I think that they
>>>go for something like $3000.
>>
>>Oudin coil would also likely work. Buy a full spool of #24 enameled wire
>>of around 10k' long. Remove as much of the middle of the spool as
>>possible to make the hole larger. Put in the largest soft iron core you
>>can fit. Flatten a 10' section of 1/4" copper tubing and wrap it around
>>the entire spool. Take care that the copper coils do not touch or
>>separate with paper. connect the ends of the copper pipe to the 120V
>>60Hz power supply near the circuit breaker. The resulting magnetic field
>>will obliterate radio and tv transmissions for about 2 miles.
>>
>>Hook that up to a tesla coil for some real fun.
>>
>>>>Tomas
>>>
>>>Bob
>>>_______________________________________________
>>>Ale mailing list
>>>Ale at ale.org
>>>http://www.ale.org/mailman/listinfo/ale
>>>
>>>
>>>------------------------------------------------------------------------
>>>
>>>_______________________________________________
>>>Ale mailing list
>>>Ale at ale.org
>>>http://www.ale.org/mailman/listinfo/ale

-- 
__________________________________________________________
Dow Hurst                  Office: 770-499-3428            *
Systems Support Specialist    Fax: 770-423-6744            *
1000 Chastain Rd. Bldg. 12                                 *
Chemistry Department SC428  Email:   dhurst at kennesaw.edu   *
Kennesaw State University         Dow.Hurst at mindspring.com *
Kennesaw, GA 30144                                         *
************************************************************
This message (including any attachments) contains          *
confidential information intended for a specific individual*
and purpose, and is protected by law.  If you are not the  *
intended recipient, you should delete this message and are *
hereby notified that any disclosure, copying, distribution *
of this message, or the taking of any action based on it,  *
is strictly prohibited.                                    *
************************************************************