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Post by omgcrew on Oct 17, 2007 21:41:39 GMT -9
Anyone want to help on this one? GCT7Z4
Leaving Sunday and this is the closest. Not sure how close it is actually.
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Post by ladybugkids on Oct 18, 2007 6:00:36 GMT -9
I normally wouldn't discuss puzzle solutions in a forum setting (since solving the puzzle is usually the fun part of the cache), but since this cache is more about waypoint projecting, I'll take a swing at it. There are at least three ways you could do this cache.
1. Check out the "project a waypoint" feature in your GPS. You should be able to enter the coordinates for the cache and then project the waypoint from there. Just be sure your GPS is set up for "true" north on the projection.
2. Launch your mapping software and enter the coordinates from the cache page. Using the "distance tool" (or whatever Garmin calls it), project the waypoint and record the coordinates. Be sure your software is set up for true north.
3. Enter the coordinates from the cache page, go to the lake shore, line yourself up with your GPS pointing 180° opposite the bearing given on the cache page, and walk the bearing line until your GPS is telling you you are the stated distance from the cache page coordinates. This may or may not be tough to do because of forest floor undergrowth. Watch out for ticks...with as warm as it's been back there, I'm suspect they will be out in force.
As long as you are in the area, check out the cool RI - CT- MA Tri-state Marker by MIDIWizard (GC4BA3)/RI - CT- MA Tri-state Marker by Downy288 (GCHBYB) pair along with the associated benchmarks. Cool walk along an abandoned railbed that passes under an old carriage bridge and you can score a virtual, a regular, and at least two benchmarks within ten yards of each other.
Have fun!
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Post by TundraQuad on Oct 18, 2007 8:40:36 GMT -9
Do you know how to find the Ground Zero starting point? It's a neat little map feature from the zip code search.
On the projecting part you get to do the math. Unfortunately this distance of 1445 doesn't work out even when divided by 5280. My Garmin doesn't let me project in feet. This distance doesn't give a nice even number, so there will be room for error there. Either round up or down.
TQ Mom just likes to walk away from the starting point tracking the distance away from with the GPS and use a compass for the bearing. You would have to know the correction to the bearing line for magnetic. Won't be as bad there as here in the Far North. But doesn't sound like you can actually put you feet at ground zero for this cache to use that method.
I do believe projecting is the way to go and not the methods listed on the cache page.
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Post by oleruns on Oct 18, 2007 12:02:00 GMT -9
You could average a waypoint along your route before your gps hits .10 at say 500' Just an idea if you did it that way. Mapsource will work if you want to use that. Sounds like a good idea for another 201 event -Ole
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Post by omgcrew on Oct 18, 2007 16:52:42 GMT -9
On the project a waypoint menu you can change the mi distance to ft. But you can only enter 3 digit numbers. The way I found around this is to switch to yds and divide the distance 1445 by 3. So say 482yds. Next it looks like he is talking about GZ being Chepachet, RI wich is N 41° 54.952 W 071° 40.495 How do I project a point off that coord at 66.5 degrees true?
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Post by TundraQuad on Oct 19, 2007 7:12:42 GMT -9
From Main Menu go to Setup then Heading. There you can switch between True North and Magnetic. Not sure how to get that 1/2 degree. On the same menus you can change the units from Degrees to Mils. But don't know if that conversion would do you any good or not.
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Post by oleruns on Oct 19, 2007 7:31:29 GMT -9
Thanks TQ. geocachers sure ask the most of GPS units don't we? Sounds like great topics for another 201 -
Should I get the room again?
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Post by omgcrew on Oct 19, 2007 9:43:59 GMT -9
Thanks for the help. I did the projection with 66 and 67 degrees and the difference is 23 feet. Good enough for me. I am going to email the owner to see if I am on the right track. I don't want to spend time searching for a cache that I may be way off on.
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Post by oleruns on Oct 20, 2007 9:03:03 GMT -9
Dough! You can do this in GSAK as well - upload and select the puzzle cache. Use project coords(under waypoint) , you can select feet and that should get you close.
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