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Thanks to both of you.  Both maps on the gps and working.  As soon as Boyd said usb, I recognized where to go.  One of the problems of having been here almost 50 years before computers came along is that the simple things cause the most difficulty!  Seldom, I had already started when I got your response, but I came through ok this time.

I am having the often reported problem of trying to load two maps on a Garmin.  (Ortopo and TopoIdaho both from this site).  When I load one, I appear to overwrite the other.  I am dealing with an Astro 320 which is a new unit released this summer, so I believe it probably has the most current software.  I am using Basecamp on a 32bit PC.  I have reviewed the forum discussions and I would like to deal with the problem so I can use either map on the GPS without opening both.
As I understand it, I need to change the file name on at least one map from gmapsup.img to something else (such as oretopo.img.  I believe it is the file name on the 320, and not the name of the file on my computer that I need to change(?)  How do I find the file name on the gps unit?  Look somewhere using Basecamp while the unit is connected to the PC?  I have tried the various possiblities I can see and cannot seem to get to it.  (If it is the name of the file stored in my computer how do I find it there?)  The install wizard does not seem to give me a choice to change the name before I install a map and I cannot find the img file name on the GPS unit or a way to change it if I did.

Got it!! A combination of monitor contrast and detail level adjustment.    Sorry to clutter up the formum.  Thanks again for the help.

One other point.  This is not a problem on the Idaho topo map, and the Idaho Land Ownership map.  While the countours are a little light and some zoom levels, they are certainly visible and usable.

Found the detail level adjustment and moved it to "highest".  This did not help.

Thank you for the help.  Here are my answers. 

First, the countour lines are not visible.  The major countour lines are faintly appearing when the zoom is at about 500 feet.  They disappear when closer, and become weaker at less magnification or zoom.  The background color is primarily light green, the countour lines are light orange or yellow.  They are most visible against the green background, and almost completely disappear against the white (private) background.

I tried to adjust the detail level in Basecamp at toolbars-detail level.  I get a checked box, but have not found anything to adjust yet.  I am still looking.

I had tried contrast and brightness on the monitor early with no effect.  I do not see anything on color that strikes me as adjustable.  Color is currently set at 6500k (whatever that means), and there is a "custom" setting which I have not tried.

As you certainly can tell, I am not very computer literate.

marsingbob
Newbie

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« on: Today at 06:45:45 AM »QuoteModifyRemoveThanks to the person(s) who put together the Idaho and Oregon topo maps recommended by this site.  They are great!!  I am using Basecamp and they loaded with no problems.

One issue with the Oregon topo.  The countour lines are not readable on my desktop.  This is sort of an issue with the Idaho topo, but on the Idaho topo the countour lines  are weak but readable.  One the Oregon map I can see that the countour lines are there, but they are not usable.  However when I load the Oregon topo to my Garmin Astro 320, they are readily visible.  Anything I can do?