How accurate is it?
Today's GPS receivers are extremely accurate, thanks to their
parallel multi-channel design. Garmin's 12 parallel channel receivers
are quick to lock onto satellites when first turned on and they
maintain strong locks, even in dense foliage or urban settings with
tall buildings. Certain atmospheric factors and other sources of error
can affect the accuracy of GPS receivers. Garmin® GPS receivers are
accurate to within 15 meters on average.
 Newer
Garmin GPS receivers with
WAAS (Wide Area
Augmentation System) capability can improve accuracy to less than
three meters on average. No additional equipment or fees are required
to take advantage of WAAS. Users can also get better accuracy with
Differential GPS (DGPS), which corrects GPS signals to within an
average of three to five meters. The U.S. Coast Guard operates the
most common DGPS correction service. This system consists of a network
of towers that receive GPS signals and transmit a corrected signal by
beacon transmitters. In order to get the corrected signal, users must
have a differential beacon receiver and beacon antenna in addition to
their GPS.
ETREX VENTURE GPS
The eTrex Venture offers a worldwide database of cities and
increased internal memory.
The memory capacity of one megabyte allows the eTrex Venture
to accept downloaded information from GARMIN's new MapSource®
Points of Interests CD-ROM. The CD enables users to download
locations such as restaurants, hotels, shopping, and
entertainment. Once the information is loaded into the unit, you
can make a selection and telephone and address information for a
particular point of interest will appear on the screen. The CD
also includes marine data such as lights, buoys, wrecks and
obstructions. The eTrex Venture comes housed in a stylish,
translucent green case. |
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