[aprssig] GPS interference/Lightsquared testing in Las Vegas

[John Willis]

Any precision GPS approaches are WAAS based,and depending on the type of nav installed in the airplane, may or may not require the underlying VHf nav system to be operational. The Garmin G1000 is certified to be a stand-alone GPS only nav system. 

John 
CFI, CFII
KB4DU  

> Date: Sat, 21 May 2011 10:26:46 -0700
> From: noskosteve at yahoo.com
> To: aprssig at tapr.org
> Subject: Re: [aprssig] GPS interference/Lightsquared testing in Las Vegas
> 
> 
> After the way the FCC ignored their presentation and data, you can bet that all the GPS mfrs like Garmin are out there with a fleet of mobiles driving and perhaps flying around looking VERY CLOSELY for trouble...not to mentino coorelation with their simulations.
> 
> 
> P.S. Now that I think about it,  If a GPS precision approach is approved, doesn't the airport have to have a local GPS transmitter for the DGPS precision...?
>   Does a DGPS transmitter provide for any direct user-location info, or is it only supplying real-time differential correction data for fixes obtained from the sats (similar to WAAS - as I understand WAAS)?
> 
> -- 
>  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.
> 
> More Details, Features and Downloads at:
>   http://k9dci.home.comcast.net/
> 
> 
> > 
> > http://www.gpscity.com/buzz/2011/05/faa-warns-against-lightsquared-testing-in-las-vegas.html
> > 
> > 73 de Mark N9XTN
> > 
> 
> 
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