The height of your antenna will depend on your model of GPS. Try going to the magellan accessories website: http://magellan.factoryoutletstore.com/cat/1549/Magellan-GPS-Accessories.html You'll need to enter what model you own. They will list what antennas they have available, and what the specs are. Hope it helps!
There are numerous accessories for your hand held Magellan gps. At this site: http://www.shopzilla.com/gps-accessories/gps+magellan+accessories/11100600/products you will find products such as batteries, windshield mounts, dash mounts, cradles, antenna,and leather cases.
While all GPS systems come with an internal antenna with which it uses to contact the satellites in orbit, there are accessories available. If you buy a antenna attachment, it can improve your signal quality.
Yes you receive better reception so I would recommend a gps antenna. It doesn't cost much and is available at most electronic stores. http://www.gilsson.com/
Online you can find intructions for the Magellan GPS by visiting the following webpage where you will find Magellan GPS located just under the "G" heading. http://www.retrevo.com/samples/Magellan-GPS-manuals.html
Lowrance GPS antenna is the most desired brand of GPS antenna. They are reliable, and excellent when compared to other brands, and cost the same as the lower quality brands.
The best of the two, Magellan and Garmin, would be Magellan. Magellan has the most accurate and consistent GPS. Shoot for Magellan for sure, you will definitely never have trouble with it.
The Roadmate Magellan is very comparable to the Garmin GPS. The Magellan helps you with your daily commute by providing turn by turn directions. Also Magellan offers free map lifetime map updates.
The Jaguar GPS system is voiced by Cara Jones.
GPS
According to the internet, the company that produces the Roadmate GPS device is Magellan GPS Industries. Magellan GPS carries many different products to fit your travel needs.
Magellan is an excellent brand of GPS for the prices offered. Especially if this is your first purchase of a GPS system. It works very well for avoiding traffic.
Magellan GPS units are indeed made by the USA. They are, in fact, GPS systems made by the US government in the USA so Magellans are 100 percent USA GPS units.