[Talk-ca] Future GPS issues?

[Gordon Dewis]

The P(Y) code (the encrypted military code) is transmitted on the same frequency as the L1C civilian code and on a different frequency with the L2C civilian code. Regardless, tests by the major GPSr manufacturers indicate that civilian receivers will be significantly impacted by what is effectively front-end overload. I'm not sure there's any reason to expect that military receivers wouldn't suffer similarly if they're using the main L1 frequency.

It's still a mystery why the US government would even consider issuing a license for a system that will adversely impact millions of American users.

  --G

Sent from my iPad

On 2011-08-21, at 20:55, Corey Burger <corey.burger at gmail.com> wrote:

> Military GPS also use different frequencies.
> 
> Corey
> 
> On Aug 21, 2011 5:54 PM, "Gordon Dewis" <gordon at pinetree.org> wrote:
> > Well, yes, but much of the border is sparsely populated -- most of the population lives in large cities, many of which aren't located on the border. I imagine the range of the devices they're planning on installing is comparable to cell phones rather than hundreds of kilometres. 
> > 
> > --G
> > 
> > Sent from my iPad
> > 
> > On 2011-08-21, at 20:32, Richard Weait <richard at weait.com> wrote:
> > 
> >> On Sun, Aug 21, 2011 at 8:17 PM, Gordon Dewis <gordon at pinetree.org> wrote:
> >>> The geocaching community has been watching this for a while. I don't understand why this has gotten as far as it has given that the GPS system is owned by the United States and is used for military and law enforcement applications domestically. You would think that the government would just say no to this. This shouldn't have a huge impact in Canada, except perhaps near the border.
> >> 
> >> The majority of the population in Canada is "near the border" for some
> >> value of "near". ;-) Wikipedia says 80% within 150km of the border.
> > 
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