Johnny Appleseed G P S May Specials 2003
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Johnny Appleseed G P S May Specials 2003
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To celebrate 3 years since GPS was made more accurate by Presidential decree, we are offering special deals on the bundled models shown below. Just phone 1800 666477 to order, or please call in.
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Special May price |
Normal Price applicable to this bundle |
Package Name |
Details |
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$465 |
$504 (r.r.p over $600) |
BOATIES DELIGHT |
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$1099 |
$1138 (r.r.p over $1300) |
OZITOURER 
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Garmin eMap, 32mb memory card,
Metroguide Australia detailed
mapping (city and country) works on PC and eMap, PC cable, 12v cigar
cable, adhesive type car bracket MKT8!
Find any street!!! |
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$322 |
$339 (r.r.p over $450) |
BUSHMANS'/ |
Garmin eTrex, works anywhere,
keep it in a pocket, stores 500 points, 2000 track points, find your
way back to the car, plus clip-on belt "clear"
face carry case BE100, and 4 alkaline batteries. So easy to use!! |
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$350 |
$367 (r.r.p. over $450) |
GO PLACES BUNDLE  |
Garmin eTrex, works anywhere,
keep it in a pocket, stores 500 points, 2000 track points, find your
way back to the car, plus suction under windscreen mount
MKT19 , or 3 screw bracket mount
MKT17, and 4 alkaline batteries. |
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$999 |
$1037 (r.r.p. over $1300) |
SCIENCE SOLUTION  |
Garmin GPSMAP76'S',
electronic compass, and elevations (barometer to 3 m accuracy), 10,000
track points, 10 track files, 1000 waypoints, plus clip-on belt "clear"
face carry case, and 4 alkaline batteries. |
The special prices above are to celebrate 3 years since GPS was made more accurate, by the removal of selective availability. Here is an explanation.
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The following explanation of SA is borrowed, (with this acknowledgement) from the website at Geoscience Australia, our national mapping and geodesy agency. Selective Availability was the deliberate degradation by the US Defence Department of the GPS signal (through either the predicted ephemeris and/or the timing). * The generally available GPS signal is known as the Standard Positioning Service (SPS). With SA turned on the specification for SPS was 100 m horizontal and 156 m height at 95% confidence. However, as SA was generally not fully applied users would often experience about 50 m accuracy. * Previously, the US Government had undertaken to turn off Selective Availability (SA) by 2006 |
* At about 0400 UT on 1 May, SA was turned off, by order of the President of the United States. * Although the Presidential press release referred to 10 m accuracy, the expectation was that the GPS SPS without SA would provide results at 30 metres at 95% confidence. * However, initial tests by AUSLIG in Canberra with a hand-held GPS receiver (Garmin 12XL) indicate a consistency and accuracy at the 10 metre level. Preliminary tests with data from several of AUSLIG's ARGN sites confirms this result, though there are a very small number of results approaching 30 metres. (Johnny Applseed GPS note: As an added insight, a Garmin engineer told me off the record in mid 2001, that their testing worldwide, indicated average accuracies of 6.7 metres).
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