[aprssig] FBI Equivalent Of An APRS Tracker

[Mark Earle]

On 5/11/2011 10:32 AM, r gilson wrote:
> Interesting 433 for garage door openers and APRS for commercial 
> stuff?  This area has repeater links and other stuff in this area?
>

http://www.arrl.org/band-plan-1

Per that (and I understand different regions may not adhere 100% to this)

433.00-435.00 Aux/Repeater links

My own repeater has a duplex link in this area.

Remember, though, Amateur use is secondary from 420-449.99 in the US; 
and there are "Line A" and "Line B" geographic restrictions on use of 
parts of the band.


> --- On *Wed, 5/11/11, Wes Johnston, AI4PX /<wes at ai4px.com>/* wrote:
>
>
>     From: Wes Johnston, AI4PX <wes at ai4px.com>
>     Subject: Re: [aprssig] FBI Equivalent Of An APRS Tracker
>     To: "TAPR APRS Mailing List" <aprssig at tapr.org>
>     Date: Wednesday, May 11, 2011, 10:19 AM
>
>     That would be a short range link... so  I guess they do a "drive
>     by" and download the data from curbside as opposed to live
>     tracking.  Of course it would be easy (and smart) to make it
>     beacon while moving too.
>
>     Wes
>     ---
>     The world needs more geniuses with humility because there are so
>     few of us left.
>
>
>
>     On Wed, May 11, 2011 at 04:36, Jon K Hellan <hellan at acm.org
>     </mc/compose?to=hellan at acm.org>> wrote:
>
>         On 05/10/2011 05:23 PM, Peter Baumgartner wrote:
>
>
>                 So many adjustments!   UHF "APRS"...
>
>
>                 The transceiver chip looks pretty interesting.  Too
>                 bad they didn't figure
>                 out what the frequency was.
>
>
>         Just google the datasheet. It's an ISM 433 MHz chip.
>
>         Jon LA4RT
>
>
>          Looks like a SAW resonator on the board (RFM
>
>                 RFI172)  It didn't search on the RFM site:
>                 http://www.rfm.com/products/sawresonators.php
>
>
>                 Then, what's that that looks like an unencapsulated
>                 ceramic chip by the
>                 MAX chip on the RF board??
>
>
>                 The chip above the ZEMICX chip a memory   ???4008CAAA
>                  8k memory ??
>                 Perhaps it stores the data and regurgitates it on command.
>
>
>                 If you want ZEMICS App note(s) and data sheet(s).
>                  There's several:
>                 http://www.datasheetarchive.com/XE1201-datasheet.html
>
>
>
>                 Now that I've used the X-Bee modules and have some,
>                 I'd be inclined to use
>                 them...
>
>
>                 --
>                  73, Steve, K9DCI   USN (Vet) MOT (Ret) Ham (Yet)
>                 --
>                 I served during the cold war, so you can continue to
>                 be served a cold one.
>
>
>                 --- Stephen H. Smith wrote:
>
>
>                     This article from the Wired.com
>                     website shows the disassembly of an FBI tracking
>                     device
>                     similar to an APRS tracker.
>
>                     .<http://www.wired.com/threatlevel/2011/05/gps-gallery>
>
>                     And an article about a person finding one of these
>                     things
>                     on their car:
>
>                     .<http://www.wired.com/threatlevel/2011/05/gps>
>
>
>                     --
>
>                     Stephen H. Smith    wa8lmf (at) aol.com
>                     <http://aol.com/>
>
>
>
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>
>
>             Peter Baumgartner
>             WWW: www.timetronic.it <http://www.timetronic.it/>
>             eMail: peter.baumgartner at timetronic.it
>             </mc/compose?to=peter.baumgartner at timetronic.it>
>             Phone: (+39) 0474 474168
>             Fax: (+39) 04746455
>             Mobil: (+39) 329 4960006
>
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