<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Interesting 433 for garage door openers and APRS for commercial stuff? This area has repeater links and other stuff in this area?<br><br>--- On <b>Wed, 5/11/11, Wes Johnston, AI4PX <i><wes@ai4px.com></i></b> wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"><br>From: Wes Johnston, AI4PX <wes@ai4px.com><br>Subject: Re: [aprssig] FBI Equivalent Of An APRS Tracker<br>To: "TAPR APRS Mailing List" <aprssig@tapr.org><br>Date: Wednesday, May 11, 2011, 10:19 AM<br><br><div id="yiv677149423"><div>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.</div>
<div><br clear="all">Wes </div>
<div>---<br>The world needs more geniuses with humility because there are so few of us left.<br></div><br><br><br>
<div class="yiv677149423gmail_quote">On Wed, May 11, 2011 at 04:36, Jon K Hellan <span dir="ltr"><<a rel="nofollow" ymailto="mailto:hellan@acm.org" target="_blank" href="/mc/compose?to=hellan@acm.org">hellan@acm.org</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">
<div class="yiv677149423im">On 05/10/2011 05:23 PM, Peter Baumgartner wrote:<br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote"><br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">So many adjustments! UHF "APRS"...<br></blockquote><br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">The transceiver chip looks pretty interesting. Too bad they didn't figure<br>out what the frequency was.<br>
</blockquote></blockquote><br></div>Just google the datasheet. It's an ISM 433 MHz chip.<br><br>Jon LA4RT
<div>
<div></div>
<div class="yiv677149423h5"><br><br> Looks like a SAW resonator on the board (RFM<br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">RFI172) It didn't search on the RFM site:<br><a rel="nofollow" target="_blank" href="http://www.rfm.com/products/sawresonators.php">http://www.rfm.com/products/sawresonators.php</a><br>
</blockquote><br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">Then, what's that that looks like an unencapsulated ceramic chip by the<br>MAX chip on the RF board??<br>
</blockquote><br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">The chip above the ZEMICX chip a memory ???4008CAAA 8k memory ??<br>Perhaps it stores the data and regurgitates it on command.<br>
</blockquote><br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">If you want ZEMICS App note(s) and data sheet(s). There's several:<br><a rel="nofollow" target="_blank" href="http://www.datasheetarchive.com/XE1201-datasheet.html">http://www.datasheetarchive.com/XE1201-datasheet.html</a><br>
</blockquote><br><br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">Now that I've used the X-Bee modules and have some, I'd be inclined to use<br>them...<br></blockquote>
<br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">--<br> 73, Steve, K9DCI USN (Vet) MOT (Ret) Ham (Yet)<br>--<br>I served during the cold war, so you can continue to be served a cold one.<br>
</blockquote><br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">--- Stephen H. Smith wrote:<br></blockquote><br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">This article from the Wired.com<br>website shows the disassembly of an FBI tracking device<br>similar to an APRS tracker.<br>
<br>.<<a rel="nofollow" target="_blank" href="http://www.wired.com/threatlevel/2011/05/gps-gallery">http://www.wired.com/threatlevel/2011/05/gps-gallery</a>><br><br>And an article about a person finding one of these things<br>on their car:<br>
<br>.<<a rel="nofollow" target="_blank" href="http://www.wired.com/threatlevel/2011/05/gps">http://www.wired.com/threatlevel/2011/05/gps</a>><br><br><br>--<br><br>Stephen H. Smith wa8lmf (at) <a rel="nofollow" target="_blank" href="http://aol.com/">aol.com</a><br>
</blockquote></blockquote><br><br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex;" class="yiv677149423gmail_quote">_______________________________________________<br>aprssig mailing list<br><a rel="nofollow" ymailto="mailto:aprssig@tapr.org" target="_blank" href="/mc/compose?to=aprssig@tapr.org">aprssig@tapr.org</a><br>
<a rel="nofollow" target="_blank" href="https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig">https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig</a><br></blockquote><br><br>Peter Baumgartner<br>WWW: <a rel="nofollow" target="_blank" href="http://www.timetronic.it/">www.timetronic.it</a><br>
eMail: <a rel="nofollow" ymailto="mailto:peter.baumgartner@timetronic.it" target="_blank" href="/mc/compose?to=peter.baumgartner@timetronic.it">peter.baumgartner@timetronic.it</a><br>Phone: <a rel="nofollow">(+39) 0474 474168</a><br>
Fax: <a rel="nofollow">(+39) 04746455</a><br>Mobil: <a rel="nofollow">(+39) 329 4960006</a><br><br>_______________________________________________<br>
aprssig mailing list<br><a rel="nofollow" ymailto="mailto:aprssig@tapr.org" target="_blank" href="/mc/compose?to=aprssig@tapr.org">aprssig@tapr.org</a><br><a rel="nofollow" target="_blank" href="https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig">https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig</a><br>
</blockquote><br><br>_______________________________________________<br>aprssig mailing list<br><a rel="nofollow" ymailto="mailto:aprssig@tapr.org" target="_blank" href="/mc/compose?to=aprssig@tapr.org">aprssig@tapr.org</a><br><a rel="nofollow" target="_blank" href="https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig">https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig</a><br>
</div></div></blockquote></div><br>
</div><br>-----Inline Attachment Follows-----<br><br><div class="plainMail">_______________________________________________<br>aprssig mailing list<br><a ymailto="mailto:aprssig@tapr.org" href="/mc/compose?to=aprssig@tapr.org">aprssig@tapr.org</a><br><a href="https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig" target="_blank">https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig</a><br></div></blockquote></td></tr></table>