FCC Calls for More Testing on Potential LightSquared Interference
September 14, 2011

http://www.gpsworld.com/wireless/new...rference-12078

The Federal Communications Commission issued a Public Notice today
stating that additional testing is necessary to ensure that
LightSquared's broadband network will not interfere with GPS.

The notice states: "Following extensive comments received as a result of
the technical working group process required by the International
Bureau's Order and Authorization dated January 26, 2011, the Federal
Communications Commission, in consultation with NTIA, has determined
that additional targeted testing is needed to ensure that any potential
commercial terrestrial services offered by LightSquared will not cause
harmful interference to GPS operations....

"For more than three months, the technical working group, comprised of
more than 120 participants including representatives from the Department
of Defense, Department of Transportation and other federal agencies, the
GPS community, various telecommunications companies and LightSquared,
conducted an extensive set of tests, and LightSquared submitted a final
report on June 30, 2011. The technical working group effort identified
potential for harmful interference from LightSquared’s originally
proposed deployment based on operation of terrestrial transmitters in
both the upper and lower 10 MHz portions of its spectrum. The FCC issued
a public notice on June 30, 2011, seeking comment on the report.

"LightSquared submitted proposed mitigation techniques to remedy the
interference to GPS simultaneously with the technical working group
final report. 4 Notably, LightSquared proposed to revise its planned
deployment to operate terrestrial transmitters only in the lower 10 MHz
of its spectrum. The results thus far from the testing using the lower
10 MHz showed significant improvement compared to tests of the upper 10
MHz, although there continue to be interference concerns, e.g., with
certain types of high precision GPS receivers, including devices used in
national security and aviation applications. Additional tests are
therefore necessary."

See Public Notice: http://www.gpsworld.com/wireless/fcc...c-notice-12079

On Thu, 15 Sep 2011 18:52:33 -0500, Sam Wormley <(E-Mail Removed)>
wrote:

>The results thus far from the testing using the lower
>10 MHz showed significant improvement compared to tests of the upper 10
>MHz, although there continue to be interference concerns, e.g., with
>certain types of high precision GPS receivers, including devices used in
>national security and aviation applications. Additional tests are
>therefore necessary."
>
>See Public Notice: http://www.gpsworld.com/wireless/fcc...c-notice-12079

FCC is not the sharpest knife in the draw
3 french fries short of a Happy Meal

Nicholas wrote:
> FCC is not the sharpest knife in the draw

What lottery was that?

Mike.
--
If reply address is Mike@@mjcoon.+.com (invalid), remove spurious "@"
and substitute "plus" for +.

On Fri, 16 Sep 2011 09:13:32 +0100, "Mike Coon" <Mike@@mjcoon.+.com>
wrote:

>Nicholas wrote:
>> FCC is not the sharpest knife in the draw
>
>What lottery was that?
>
>Mike.

The IQ lottery. They didn't get a winning ticket. Interference in
the LOWER 10 MHz has already been demonstrated by the TWG's, so WHY
drag this s$it out any longer with "further testing is required"?

Lg