Hand held GPS Info

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PhilD
UKDN Valued Member and Diamond Supporter
UKDN Valued Member and Diamond Supporter
Posts: 14123
meble kuchenne warszawa
Joined: Thu Sep 16, 2004 11:04 am
Main Detector: Makro Racer
Location: Saving North Yorks finds for future generations by recording with PAS
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Hand held GPS Info

Post by PhilD »

Why buy a GPS?
http://atoz.forumukdetectornet.co.uk/gpswhybuy.html

Choosing a GPS
http://www.garmin.com/outdoor/compare.jsp

http://www.gilsson.com/garmin_gps_reviews.htm

http://www.pocketgpsworld.com/article.php#Garmin

Garmin Etrex H(entry level)
http://www8.garmin.com/manuals/eTrexH_OwnersManual.pdf

http://www.youtube.com/watch?v=F83iKgPx85A

http://www.maps-gps-info.com/gp-rvw-gar-trx.html

Accessories
Cable to connect to computer (take care to get the right one)
I saw this one on eBay http://www.ebay.co.uk/itm/USB-Data-Cabl ... 0459577576

Bicycle bracket to connect to detector (or tie wraps)
I saw this one on Amazon http://www.amazon.co.uk/Garmin-eTrex-Ha ... B00004VX15

Setting it up

Set up - Units;
Position Format - British
Map Datum - Ord Srvy GB (Preferred by PAS)
Units - Metric
North Ref - Magnetic
Variation - 0004 deg W

Set up - Interface;
I/O Format - Garmin

Set up - System;
GPS Mode - WAAS
Language - English
Battery - Alkaline (unless you use rechargeable ones)

Menu - Tracks - Setup
Recording - On
Record Interval - Distance (Time for archaeological surveys)
Value - 1.5 m (15 seconds for archaeological surveys)
Wrap when full - Yes (No for archaeological surveys)

To mark a find spot - Power it up - Wait till satellites acquired - Page down to the Menu - Click ok on Mark - Click ok.
See http://finds.org.uk/getinvolved/guides/gps

WAAS/EGNOS
http://www.kowoma.de/en/gps/waas_egnos.htm

http://www.egnos-pro.esa.int/Publicatio ... 4_2009.pdf

http://www.esa.int/esaNA/egnos.html

Signals from the satellites contain the following errors which reduce the accuracy of the GPS;

Long term errors of the satellite orbits
Short term and Long term errors of the satellite clocks
IONO correction grids
Integrity information

The EGNOS satellites transmit data in the form of an Almanac that can help your GPS correct the errors.

See http://www.follow-the-arrow.co.uk/resources/egnos.html
See 'Loading the Almanac' http://www.gpsinformation.org/dale/dgps.htm

To download the Almanac to your GPSfor greater accuracy;

Ensure you have the WAAS mode enabled and the battery save mode is not selected
Select Advanced Sky View
The GPS will begin acquiring the satellites and signal strength bars will appear at the bottom of the screen
Letter D's will appear as the Almanac data is downloaded
Ensure all the satellites are connecting including 33 and 37
It may be necessary to try rotating the alignment of the GPS to pick up the signals

FAQ's
http://www.gpsinformation.org/dale/dgps.htm

Google Earth
http://earth.google.com/

Google Earth as a recording & research tool
http://en.calameo.com/read/000121606a72 ... 54?page=27

Setting up a GPS for an archaeological survey
http://www.atoz.forumukdetectornet.co.u ... %20Tim.pdf
Click here to register with PAS
Makro Racer / ATPro Inter / T2 / Explorer II / Ace 250 / Garrett Pro Pinpointer / Etrex 10 GPS /Lumix TZ60/PAS Records - Click here

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