Make that descends INTO a mountain...<br><br>Earl<br><br><br><div class="gmail_quote">On Mon, May 16, 2011 at 6:45 AM, Earl Needham <span dir="ltr"><<a href="mailto:earl.kd5xb@gmail.com">earl.kd5xb@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">I'm not sure very many are still using INS, although it's a fair system. However, if you start digging through approach plates, there are LOTS of GPS approaches around the country now, and I can just imagine a GPS approach gone bad where an airliner descends in a mountain.<br>
<br>Vy 7 3<br>Earl<br>KD5XB<br>Commercial, instrument, private in SES<div><div></div><div class="h5"><br><br><div class="gmail_quote">On Sun, May 15, 2011 at 10:46 PM, Steve Noskowicz <span dir="ltr"><<a href="mailto:noskosteve@yahoo.com" target="_blank">noskosteve@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
<br>
Yes. It won't "down" an airliner. They will always have inertial navigation for the foreseeable future because it relies on nothing external to the craft, but that is a red herring.<br>
The fact is that it is stupid and, I guess a direct insult to those who did careful spectrum planning based on good knowledge of radio technology and the laws of physics. That band was set aside for "low" power satellite transmitters and because we know receivers are not ideal.<br>
LightSquared is trying to blame the GPS receivers.<br>
This is simply another example that the FCC has no knowledge...BPL, First Responder bill, now this.<br>
<br>
Short form: Follow the money.<br>
<br>
I want my APRS to work everywhere...[see. On topic]<br>
--<br>
73, Steve, K9DCI<br>
--<br>
73, Steve, K9DCI USN (Vet) MOT (Ret) Ham (Yet)<br>
<font color="#888888">--<br>
I served during the cold war, so you can continue to be served a cold one.<br>
--- On Sun, 5/15/11, KA7O <<a href="mailto:ka7o@ka7o.net" target="_blank">ka7o@ka7o.net</a>> wrote:<br>
<br>
> From: KA7O <<a href="mailto:ka7o@ka7o.net" target="_blank">ka7o@ka7o.net</a>><br>
> Subject: Re: [aprssig] Anyone in Las Vegas - LightSquared Test To Begin Monday<br>
> To: "TAPR APRS Mailing List" <<a href="mailto:aprssig@tapr.org" target="_blank">aprssig@tapr.org</a>><br>
> Date: Sunday, May 15, 2011, 3:57 PM<br>
</font><div><div></div><div>> Seriously - if a compromise of the<br>
> GPS system can down a commercial<br>
> aircraft, we've got MUCH bigger problems than this<br>
> Lightsquared frippery!!<br>
><br>
> On 05/15/2011 01:45 PM, Randy Love wrote:<br>
> > One commercial airliner crashing due to this<br>
> interference might not even be<br>
> > enough to get this squashed.<br>
> ><br>
> > WTF, FCC and FAA.. This is a *threat to life and<br>
> safety* that Lightsquared<br>
> > is doing here!!!<br>
> ><br>
> > Randy<br>
> > WF5X<br>
> ><br>
> ><br>
> > On Sun, May 15, 2011 at 3:12 PM,<<a href="mailto:aprssig@k7ftp.net" target="_blank">aprssig@k7ftp.net</a>> <br>
> wrote:<br>
> ><br>
> >> If anyone on the list is in Las Vegas/Boulder<br>
> City, might want to go out<br>
> >> between 23:00 and 05:00 and see what it does.<br>
> >><br>
> >><br>
> >> <a href="http://www.lasvegassun.com/news/2011/may/14/testing-new-wireless-network-cou" target="_blank">http://www.lasvegassun.com/news/2011/may/14/testing-new-wireless-network-cou</a><br>
> >> ld-cause-gps-outag/<br>
> >><br>
> >> "A warning for night drivers: If your GPS<br>
> navigator gives out on you this<br>
> >> week, don't despair. What you're experiencing is<br>
> only a test of the<br>
> >> emerging<br>
> >> broadband system.<br>
> >><br>
> >> Starting Monday, broadband developr LightSquared<br>
> will start testing its<br>
> >> planned 4G speed wireless network in the Las Vegas<br>
> area. The test will run<br>
> >> after midnight for several hours for 10 days, and<br>
> if it works, Las Vegas<br>
> >> could become one of the first U.S. cities to get<br>
> on a super-high speed<br>
> >> Internet grid that's independent of any particular<br>
> service provider.<br>
> >><br>
> >> But if it fails, government agencies warn that it<br>
> could compromise or even<br>
> >> black out the GPS systems in the area, rendering<br>
> temporarily useless<br>
> >> everything from your car's navigator to the<br>
> systems that allow airplanes to<br>
> >> come in for a safe landing."<br>
> >><br>
> >> "Late last week, the Federal Aviation<br>
> Administration alerted pilots that<br>
> >> "the GPS signal may be unreliable or unavailable"<br>
> within a nearly 300-mile<br>
> >> radius of Boulder City, where the test transmitter<br>
> will be located, from 11<br>
> >> p.m. to 5 a.m. local time daily from Monday to May<br>
> 27."<br>
> >><br>
> >><br>
> >> _______________________________________________<br>
> >> aprssig mailing list<br>
> >> <a href="mailto:aprssig@tapr.org" target="_blank">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>
> >><br>
> ><br>
> ><br>
> ><br>
> > _______________________________________________<br>
> > aprssig mailing list<br>
> > <a href="mailto:aprssig@tapr.org" target="_blank">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>
><br>
><br>
> _______________________________________________<br>
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><br>
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