GPS SYSTEMS REVIEWS AND SHOPPING GUIDE - GEOCACHING BOOKS

For the traditional geocache, a geocacher will place a waterproof container, containing a log book (with pen or pencil) and trinkets or some sort of treasures, then note the cache's coordinates. These coordinates, along with other details of the location, are posted on a website. Other geocachers obtain the coordinates from the Internet and seek out the cache using their GPS handheld receivers. The finding geocachers record their exploits in the logbook and online. Geocachers are free to take objects from the cache in exchange for leaving something of similar or higher value, so there is treasure for the next person to find.

Microcache hidden and found beside the Roman Colosseum
Typical cache treasures are not high in monetary value but may hold personal value to the finder. Aside from the logbook, common cache contents are unusual coins or currency, small toys, ornamental buttons, CDs, or books. Also common are objects that are moved from cache to cache, such as Travel Bugs or Geocoins, whose travels may be logged and followed online. Occasionally, higher value items are included in geocaches, normally reserved for the "first finder", or in locations which are harder to reach.

A Travel Bug
Geocaches can range in size from film canisters often called "microcaches," too small to hold anything more than a tiny paper log, to those placed in five-gallon buckets or even larger containers. [4]
If a geocache has been vandalized or stolen, it is said to have been "muggled" or "plundered." The former term plays off the fact that those not familiar with geocaching are called "geo-muggles" or just muggles, a term borrowed from the Harry Potter series of books.[5]
If a cacher discovers that a cache has been muggled, it can be logged as needing maintenance, which sends an e-mail to the cache owner so it can be repaired, replaced, or archived (deactivated).

In the United Kingdom, trigpointing is an analogous recreational activity to benchmarking. Participants search for trig points rather than benchmarks. Trig points are the common name for "triangulation pillars". These are concrete pillars, about 4' tall, which were used by the Ordnance Survey in order to determine the exact shape of the country in a project known as the retriangulation of Great Britain, which was carried out from 1936 to 1962. They are generally located on the highest bit of ground in the area, so that there is a direct line of sight from one to the next. By setting a theodolite on the top of the pillar, accurate bearings to nearby trig points could be taken. This process is called "triangulation".
There are 6550 such pillars listed in the T:UK database. While most of them have fallen into disuse, about 184 of them are currently used in the Passive Station network. These are maintained so they can be used as accurately located anchor points for differential GPS comparisons, being re-surveyed every five years to calibrate for any geological movements of the ground.

Previous to this, I had the Nuvi 350, which is also an excellent device. Since the function is identical in nearly every regard to the 350, there is little point in covering the basics in much depth, but it's worth re-stating some of them. I will go into great detail on the Bluetooth functionality below.

This is such a handy device, and is so well executed, that you would be hard-pressed not to love it. The first thing I noticed about the Nuvi was its incredibly small size and weight. I could not believe how light it was. I literally expected it to have at least twice the heft when I went to pick it up the first time - it was like picking up a deck of cards, but lighter.

The antenna is a flap that is raised from the back, maybe about the size of a matchbook. When raised the Nuvi immediately starts locking in on satellites, when lowered, the unit knows you are through navigating for a while. Intuitive and effective.

Navigation on the Nuvi is very good, fast, and intuitive. It's no different from many of Garmin's other offerings in that regard. Some buildings and businesses that you would expect to be shown as POIs are not there, but most are. One thing I would suggest: when a route is less than ideal, Garmin should allow you to correct it permanently so that it does not re-suggest the non-preferred route each time.

I had a problem with my old Nuvi 350 that I have not observed on the new 360. Sometimes the 350 would not lock onto the satellite signal. Once it went into this mode of searching for, but not locking in, for over a minute it just never found anything. The only way I found to correct this was to push the small reset button under the antenna. I notice that another reviewer found that his new 360 had the same problem. This must be a bug in some Nuvi units that would be worth following up with Garmin on. I can tell you that my 360 NEVER has required a reboot, and I've been using it continuously.

I did not test the MP3 functionality beyond verifying that it plays back the songs that are pre-loaded for demo purposes. I didn't care about this feature; I'm very happy with my iPod for song management and playback. I can verify that you would not want to use the Nuvi's internal speaker for song playback, though. It's good enough to use as a speakerphone and for voice prompts, but it's not a hi-fi.

Now, for the fun part: Bluetooth functionality. I have been using it with my BlackBerry 8700c with excellent results so far. I had no problems with the initial discovery and mating process. The interface is robust. What happens is that once your phone has made the connection with the 360, a phone icon appears on the Nuvi. You can now use the 360 to call ANY POI directly from the screen! This is truly amazing; you are now walking around with the yellow pages in the palm of your hand, sortable by your current location, or any other location you choose. I just find the Point of Interest, and touch the phone number of that POI, and the phone starts dialing it. The sound comes out through the speaker of the Nuvi, and conversations have been natural so far. It's working like an absolute charm, and this single feature moves the device beyond anything else available right now.

When you select the phone icon from the main screen, several phone-related icons appear. From the phone screen, you can make a call manually, access your address book, call a POI, etceteras. The manual dial function works fine from the touchscreen. The really cool news: Nuvi automatically downloads your phone's address book to its database when it makes the initial Bluetooth link. So, if your phone supports this functionality, you can use it for all dialing functions, since the display is so much nicer than most phones, and the touchscreen works really well. You can always break the BT connection once you get the number dialed if you want a private, non-speakerphoned conversation. I have done that many times already. Once your call ends, the connection to the Nuvi is reestablished automatically. One word of warning: BlackBerry does not support sending its addresses to the Nuvi, so I was unable to test the download feature, but this does not surprise me given BlackBerry's security obsession. I am confident that it would work fine with other supported phones.

Overall, the device is a joy to operate. The battery life is good, although I would not call it excellent. The menus are very intuitive. The accuracy is very high. Even the windshield mount earns my praise. I did a lot of research on the Nuvi, comparing it in excruciating detail to the latest Tom Tom 910, the Magellan Roadmate 800, etceteras. The 350 was a great unit, the 360's Bluetooth functionality makes it even better, and worth the extra money for me.

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