Lynn, what you are describing is known as Spoofing, and is fairly common in combat theaters.<br><br><div class="gmail_quote">On Thu, Jan 20, 2011 at 12:03 PM, Lynn W. Deffenbaugh (Mr) <span dir="ltr"><<a href="mailto:ldeffenb@homeside.to">ldeffenb@homeside.to</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">But with a jammer, the receiver knows they don't have a fix and something's up. I'm more thinking an experimental scrambler/offsetter that allows GPS receivers within the cone of influence to arrive at a solution based on the received signals and generate fix, but they really aren't at the location the fix describes. And the GPS consumer won't know that they're being mis-lead (literally!).<div class="im">
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<br>
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32<br>
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</div><div><div></div><div class="h5"><a href="mailto:mwbesemer@cox.net" target="_blank">mwbesemer@cox.net</a> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Nope... you're thinking about it from the wrong angle.<br>
<br>
Ever heard of a GPS Jammer?<br>
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Mike<br>
WM4B<br>
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<br>
On Thu, Jan 20, 2011 at 11:36 AM, Gregg Wonderly wrote:<br>
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<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
It sounds like a transmitter at 40,000ft that might be a "relay" of existing GPS data. Perhaps they are trying to figure out how to make GPS work on the ground in cities with tall buildings?<br>
<br>
Gregg<br>
w5GGW<br>
<br>
On 1/20/2011 9:15 AM, Earl Needham wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
I'm just wondering what they're doing that might disrupt GPS...<br>
<br>
Vy 7 3<br>
Earl<br>
KD5XB<br>
<br>
KD5XB -- Earl Needham <a href="http://groups.yahoo.com/group/cw_bugs" target="_blank">http://groups.yahoo.com/group/cw_bugs</a> Quoting from the Coast Guard: ZUT Posted via Blackberry<br>
<br>
-----Original Message-----<br>
From: Steve Noskowicz<<a href="mailto:noskosteve@yahoo.com" target="_blank">noskosteve@yahoo.com</a>><br>
Sender: <a href="mailto:aprssig-bounces@tapr.org" target="_blank">aprssig-bounces@tapr.org</a><br>
Date: Thu, 20 Jan 2011 07:12:37<br>
To: TAPR APRS Mailing List<<a href="mailto:aprssig@tapr.org" target="_blank">aprssig@tapr.org</a>><br>
Reply-To: TAPR APRS Mailing List<<a href="mailto:aprssig@tapr.org" target="_blank">aprssig@tapr.org</a>><br>
Subject: Re: [aprssig] GPS possible disruption SE US Jan 20 - Feb 22<br>
<br>
<br>
--- On Lynn W. Deffenbaugh (Mr) wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
... I was looking for the coordinates that I could understand ...<br>
Lynn (D) - KJ4ERJ -<br>
</blockquote>
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- - - - - -<br>
<br>
I often say that... "Can you explain that in terms I know?" (;-)<br>
<br>
304906N = 30.4906 Deg North<br>
<br>
0802811W = 80.2811 Deg West<br>
<br>
Google maps finds it A-OK.<br>
<br>
If you'd like it, I have an Excel spreadsheet that does conversions between all forms of these. That is:<br>
1 - Degrees.decimal (As shown above)<br>
2 - Degrees, Minutes.decimal<br>
3 - Degrees, Minutes, Seconds.decimal<br>
<br>
Contact via my web site or <a href="mailto:MYCALL@arrl.net" target="_blank">MYCALL@arrl.net</a><br>
<br>
<br>
</blockquote>
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<br>
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