[aprssig] FBI Equivalent Of An APRS Tracker

[Peter Baumgartner]

> So many adjustments!   UHF "APRS"...

> The transceiver chip looks pretty interesting.  Too bad they didn't figure
> out what the frequency was.  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


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Peter Baumgartner
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