snowfleurys

Centainly. Some caches can be found using the location map and hints in the cache description on the website

A few thoughts. Do you have the datum set properly - to WGS84 or NAD83? The satellites the USA has operating are world wide with equal recption everywhere/anywhere. A few years ago it was not uncommon to get worse accuracy with WASS enabled depending on where you were located. I believe those satellites are geostationary over the equator, so the further from the equator you are the less usefull they are. There was also some other improvement in accuracy, but it depended on being close to the coast. Not sure if your GPSr is capable of receiving special non-USA satellite signals. Try contacting Magellan's customer service and let us know what they say.

The range of display of a custom RASTER map depends on the size of the pixels. See my January results on various raster data types in: http://www.gpsfiledepot.com/maps/view/281/ 3mi to 300ft is likely 14.25m (ie NASA ETM) .5mi to 80 ft is likely 2.4m (ie USGS DRG) .3mi to 50 ft is likely 2m (ie some USGS geologic map images) I found the image clarity degrades 3-4 (or 5) zoom levels before the images stops being displayed. To change the display zoom level you would have to change the pixel size, which will change (degrade) the image quality. Garmin should really change this, but I expect custom raster images were a test for their Birdseye imagery.

There are segment limits and total size limits. Software upgrades during the past year have increased the usable card size (to 4Gb) on some models, however the segment limit is still 2200 on those units. Most newer models have a 4000 (one poster said 3860?) segment limit and 'unlimited' card size. Garmin has decreased the number of segments on at least one of their products so more of the mapset can be loaded within the segment limit, however that makes them less usable or unusable on the units with only 24Mb of internal memory. A world of trade-offs.

From what others have posted the Garmin mapsets do NOT show townships nor sections.

At least you get units on your elevation. I can change the x &/or y increments, but my OR300 will not show any unit labels.

The topo mapset on the 62st is likely to be Garmin's 100k topo product. CN is generally very accurate for road/street information, perhaps 24k scale or more. The display of CN data will 'override' the topo mapset - roads, topo, etc. You have to disable CN to view the topo mapset. The gpsfiledepot has contour line overlay files by State which will work/display with CN and other mapsets which do not have contour line data.

Open Street Maps are routable. One good source is: http://garmin.na1400.info/

What maps you really need depends on what you really need. The VA-DC-MD area will easily fit on the card which came with the GPSr (about a month ago someone mentioned Garmin is now shipping them with a 1Gb card). Many of us have found many caches without a map on the GPSr. Some caches can even be found by only using the info and map on the website - no GPSr needed. More than one mapset can be on the card. All the mapsets (or portions of) need to be processed by MapSource or BaseCamp at the same time and get put into a gmapsupp.img file. That unit only uses one gmapsupp.img file. To add/delete any data in that file means recreating it. You can turn on/off individual mapsets (or quads/segments within a mapset) on the GPSr. Not all mapsets are routable. If by 'turn-by-turn guidance' you mean voice instruction, that GPSr does not support it.

More appropriate to be asking on the gpsfiledepot forums. Which specific mapsets and what specifically are you trying to do? Most are self installing so you should not need either program. Did the description of the mapset say it was an overlay/transparent? If the map(s) are overlay/transparent, there will be no overview/reference map to view in MapSource. If you zoom in enough the actually data will display. The lines are probably the selection/segment/quad outlines. MapSource only allows one mapset to be viewed at a time. An overlay mapset works with another mapset(s) on the GPSr. The options you have for sending the data to the GPSr depend on which GPSr you have. As myotis said, you can use MapSetTookKit to remove a mapset. CAUTION: MapSource has some files (mapsets) which come with it; if you delete these MapSource may not function. The mapsets which are self installing should have an uninstall program specific to that mapset in the folder with the mapset data files. Be as specific as you can as not all the mapsets are created nor function the same way.

MapSource and BaseCamp are Garmin programs for the PC which will upload mapsets or portions thereof to the GPSr. The mapset you downloaded from gpsfiledepot probably is self-installing to MapSource/Basecamp. See: http://www.gpsfiledepot.com/tutorials/how-...armin-gps-unit/

Thanks for the info. You are the first I have heard that actually tried it. Besides copying the file to the computer, I changed the attribute on the included mapset to read-only.

Many of the free maps are selfinstalling. You download them; run the .exe file; and then use MapSource or BaseCamp (or MAC software) to build a gmapsupp.img file which goes to the GPSr. Some mapsets come as a gmapsupp.img (or somename.img) file and go directly to the GPSr (those which can handle somename.img files). Best NOT to try adding to a Garmin preprogramed card - if something does not work, Garmin will likely not replace the card.

CN has very crude hydro - its purpose it road/street navigation. Depends on what source data the map author used. Which mapset(s) from gpsfiledepot? Census TIGER data which only has the more prominent streams (they do appear to be adding more - probably from the USGS 24k hydro) was used in the regional planimetric (2009) and Ibycus (2007) mapsets. Neither mapset has contours so are not a topo map. The NW regional topo which includes OR used the more detailed USGS 24k hydro, however, there are numerous issues with that data source. Did you zoom-in enough? Major rivers are wide enough to be polygons - cgpsmapper may filter them out at the further out zoom ranges.

Try panning the map display to the US coast near a major city. Then do the find. On the OR, a red 'T" inside a diamond displays at the 'tide table' location. On either a graph is displayed with a simplistic sine curve.

The gpsfiledepot has overlay/transparent contour mapsets - thus you can have CN plus contour lines displayed at the same time. Do NOT put anything else on the TOPO 2008 SD card - it will likely destroy the TOPO 2008 data and Garmin will NOT replace it..

Topo coverage for Oregon is included in the NW regional topo mapset. You can combine the overlay/transparent contour lines in the Oregon contour overlay mapset with a planimetric mapset (i.e. Garmin's City Navigator, the regional planimetric, or OSM mapsets) to make a topo map.

Garmin is currently only providing one unlock code per purchase. You might ask them; but I have heard it is part of their agreement with NAVTEC who provides their street/road information.

Try gpsfiledepot.com. Best price around - free. Most mapsets are composed of tiles/quads and you can load as many or as few as you like. Also see the tutorials at gpsfiledepot.com.

http://www.gpsfiledepot.com/tutorials/how-...-with-your-gps/ You can also use BaseCamp - free download from Garmin's website.

How do you define detail? There is no one source for all the data types/themes which may go into a mapset. Different map authors may use different source data, or do more than a straight 'dump' of the data. Some mapsets have the latest data; others were a one time thing and may now be one or two years old.

That mapset is two mapsets in one - one for with contour lines, one with everything else. Best method to make sure you are selecting both is to select using the marquee. In one mapset the quads are number, in the other they use letters - I forget which is which - you should be seeing both in the quad seleceded window to the left of the map display window.

In the past, the CD option was considered the most flexible. With BaseCamp's ability to display the GPSr's mapset data this has slightly change. Numerous previous posts have mentioned the pro's and con's of each; one of those posters will probably point you to them or cut and paste their response here. I would expect internal memory to be slightly faster; however, I doubt it would make a noticable difference in normal usage. 'Worth it' depends on what you require/are looking for. Garmin's website allows you to view an area of you choice for many of their products. The gpsfiledepot has many free mapsets available. Free mapsets are also available from other sources.

I would expect someone in the Boy Scout organization would have tracks for all the trails on the property. I have no idea who would ask.

Setup/map//advanced map setup/shaded relief > do not show - this will change the 'dark' tan background to off white and greatly increase visibility (much better than my 76csx). Downside: no shaded relief and some line and area features are 'invisible' because Garmin used the same or nearly same color for them. Other posts have mentioned the use of a custom background color file