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• ## Re: [Hammock Camping] GPS UTM coordinates

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• Tom, Go to this site: http://www.topozone.com/ Click on: View Maps UTM Enter a UTM near where you want the waypoint. Click on where you want the waypoint. The
Message 1 of 10 , Sep 1, 2005
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Tom,

Go to this site:

http://www.topozone.com/

Click on:
View Maps
UTM
Enter a UTM near where you want the waypoint.
Click on where you want the waypoint.
The UTM is now displayed

Dick Matthews

tjarrell@... wrote:

>Brian,
>
>Thanks for the offer, but the Garmin will accept UTM coordinates, that isn't the problem. The problem is trying to determine an accurate UTM coordinate inside the grid reference box.
>
>Say a peak like the "Priest" is inside a grid bounded 40-45 on the left and right, and 85-90 bottom to top. I can't figure out how to measure the distance from the left side and up from the bottom to come up with the UTM coordinates. If it was a LAT/LONG grid I could measure the physical distance and use LAT scale to calculate the LAT/LONG. I learned here at work that LAT/LONG isn't accurate enough, so the armed forces have gone to UTM with the goal of getting down to 'rain drop' accuracy. (Granted the hole will be bigger than the drop, but boy can we measure accurately - smile.)
>
>I can measure miles/meters from the edges of the grid, but how does that convert to UTM I haven't figured out yet.
>
>Thanks all for the help. The answer is out there.
>
>Tom
>
>
• Wow Dick thanks. I ll check it out this weekend. Tom From: Dick Matthews Date: 2005/09/01 Thu PM 03:11:31 EDT To:
Message 1 of 10 , Sep 1, 2005
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Wow Dick thanks. I'll check it out this weekend.

Tom
From: Dick Matthews <dick@...>
Date: 2005/09/01 Thu PM 03:11:31 EDT
To: hammockcamping@yahoogroups.com
Subject: Re: [Hammock Camping] GPS UTM coordinates

[Non-text portions of this message have been removed]
• OK. Let me think about it. I have some stuff at home (I m not there now unfortunatly, but will be Fri afternoon.) I have some notes about UTM from some old SAR
Message 1 of 10 , Sep 1, 2005
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OK. Let me think about it. I have some stuff at home (I'm not there now
unfortunatly, but will be Fri afternoon.) I have some notes about UTM from
some old SAR stuff.

Most of the MiI I know uses MGRS (Military Grid Refernce System)so make sure
you have the same coords.

Off hand I would think that each box could be (should be) broken down into
10ths. Try dividing it out by ten.

I have some emails on it I can search now. BRB

Brian

On 9/1/05, tjarrell@... <tjarrell@...> wrote:
>
> Brian,
>
> Thanks for the offer, but the Garmin will accept UTM coordinates, that
> isn't the problem. The problem is trying to determine an accurate UTM
> coordinate inside the grid reference box.
>
> Say a peak like the "Priest" is inside a grid bounded 40-45 on the left
> and right, and 85-90 bottom to top. I can't figure out how to measure the
> distance from the left side and up from the bottom to come up with the UTM
> coordinates. If it was a LAT/LONG grid I could measure the physical distance
> and use LAT scale to calculate the LAT/LONG. I learned here at work that
> LAT/LONG isn't accurate enough, so the armed forces have gone to UTM with
> the goal of getting down to 'rain drop' accuracy. (Granted the hole will be
> bigger than the drop, but boy can we measure accurately - smile.)
>

[Non-text portions of this message have been removed]
• Tom, Try this site as well. It explains UTM and how it converts. Let me know if that is not what you are looking for and I ll dig some more. If you have any
Message 1 of 10 , Sep 1, 2005
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Tom,

Try this site as well. It explains UTM and how it converts. Let me
know if that is not what you are looking for and I'll dig some more.

If you have any questions I can try to help. I play with MGRS and
Lat/Lon. I dont like UTM all that much.

http://www.maptools.com/UsingUTM/

Brian
• Tom, Also on that site I found some tools you can print. It has the 1:62,500 scale for you. http://www.maptools.com/FreeTools/UTMtools.html HTHs, Brian
Message 1 of 10 , Sep 1, 2005
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Tom,

Also on that site I found some tools you can print. It has the
1:62,500 scale for you.

http://www.maptools.com/FreeTools/UTMtools.html

HTHs,
Brian
• Try http://maptools.com ... From: tjarrell@cox.net To: hammockcamping@yahoogroups.com Sent: Thursday, September 01, 2005 11:51 AM Subject: [Hammock Camping]
Message 1 of 10 , Sep 1, 2005
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Try http://maptools.com

----- Original Message -----
From: tjarrell@...
To: hammockcamping@yahoogroups.com
Sent: Thursday, September 01, 2005 11:51 AM
Subject: [Hammock Camping] GPS UTM coordinates

I need some help with new technology. I was given a Garmin eTrek and plan on using it next week on the AT (at the Priest) here in Central Virginia. The PATC maps I bought have the GPS grid laid on them at 5KM increments. How do I determine accurate coordiantes in order to enter waypoints?

I posed this question to my co-workers (all retired military) and they used in the service an overlay tool that had the grid broken down into smaller blocks. All you do is lay the tool (grid) over the map and count off the numbers until you have your waypoint. Due to the scale of the maps (1:62,500) none of their tools will work.

I'm trying to make my own tool by hand drawing lines inside a document protector, but physically the nearly 3 inch (77mm) grids don't divide by 5 very well. I'm sure I'd get with throwing distance to my points, but if someone has already broken the code then why reinvent the wheel?

I flew all over the world using lat/long, but there are no lat/long marks on the maps so I can't use a translation program.

You all are the masters of the quick, easy and simple solution - so someone should have run this issue to ground already.

Thanks,
Tom in Virginia Beach

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• Thank you very much everyone. I m away from my home this weekend (lucky to have bought my tickets months ago), but I look forward to checking out the sites
Message 1 of 10 , Sep 2, 2005
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Thank you very much everyone. I'm away from my home this weekend (lucky to have bought my tickets months ago), but I look forward to checking out the sites you all have passed along.

I knew someone in this group would have the answer - and you apparently do.

Again, thanks!

Tom

From: RevT <brian.tannehill@...>
Date: 2005/09/01 Thu PM 03:34:44 EDT
To: hammockcamping@yahoogroups.com
Subject: Re: Re: [Hammock Camping] GPS UTM coordinates

[Non-text portions of this message have been removed]
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