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Steven78
22-05-2005, 06:36 PM
I found this info in my GPS Manuals

GPS proved so useful for civilian navigation that the federal government
discontinued SA on May 2, 2000, after the military developed
other methods to deny GPS service to enemy forces. Reliable accuracy
for civilian users jumped from 100 meters (330 feet) under SA to the
present level of 10 to 20 meters (about 30 to 60 feet.)

Sportfish_5
22-05-2005, 07:50 PM
What has happened to Kerry ???

This is right up his alley. Maybe the DoD has stopped him talking about GPS ;D ;D ;D ;D

Cheers

Greg

nonibbles
23-05-2005, 06:40 AM
Kerry?
Who's Kerry?
I bet he's reading this ;D

chanquetas
23-05-2005, 08:29 AM
This was well publicised commercially when it happened. GPS has improved because of the removal of SA - Selective Availability.
If you have DGPS then its even better of course, down to a meter or two.

dugong
23-05-2005, 02:07 PM
yes; made a big differance to accuracy,was so much easer to find the wrecks i used to fish.

bungie
23-05-2005, 05:34 PM
Is the DGPS up and running here ??

chanquetas
23-05-2005, 06:29 PM
DGPS is available in all major Australian ports.
Here are the stations and their frequencies.
The range of coverage is approximately 150 nautical miles out to sea from each of these beacons.
Albany (315 kHz)
Brisbane (294 kHz)
Cape Flattery (304 kHz)
Cape Schanck (314 kHz)
Corny Point (316 kHz)
Darwin (294 kHz)
Exmouth (297 kHz)
Gladstone (313 kHz)
Horn Island (320 kHz)
Ingham (306 kHz)
Karratha (304 kHz)
Mackay (315 kHz)
Mallacoota (318 kHz)
Perth (306 kHz)
Sydney (308 kHz)
Weipa (316 kHz)

chanquetas
23-05-2005, 06:31 PM
Actually, here is the coverage map.
http://www.amsa.gov.au/Shipping_Safety/Navigation_Safety/Differential_Global_Postitioning_System/Coverage_Map/

Steven78
24-05-2005, 06:54 PM
Thanks