The LightSquared executives must have been scratching their heads...LOL.

http://www.gpsworld.com/gnss-system/first-responders-lightsquared-issue-11620

The Holloman AFB test would no doubt have had the very best cherry picked out of band performance isolators for that test to get past the FCC ( look it works no problemo wink ). Must of been a considerable temperature difference between the factory when the isolators were tuned and at Holloman AFB that day. crazy As the rubber RTV cement holding the ceramic contracts and expands in the isolator the tuning performance esp the out of band performance will vary considerably. GPS only has a signal strength of around -120 to -140 dB on the surface of the earth.

Edit - Nope it looks like the LightSquared Execs have figured that one out by running the field tests during the night when temperatures are much cooler and match the factory where the isolators were tuned.

Quote:
Have you flown through the test area during testing (midnight to 6 a.m.)? If so, have you noticed any effect on your GPS equipment? After telling the FAA, why not drop us a line at editor@avweb.com and let us and your fellow AVweb readers know what you experienced?




Edited by Am_Fear_Liath_Mor (05/18/11 02:46 PM)