Depends on the technology its built with: early 1980s technology military GPS navigation units took one to two cubic feet of space, modern GPS navigation units can be as small as a stack of 3 or 4 credit cards.
It is as big as your GPS, or any map you have on you!
GPS antennas can be purchased where ever the GPS receivers are sold. Big box stores such as Walmart and Bestbuy typically stock a wide variety of antennas for the different brands they sell.
Average. This is a brand that is trying to compete with the big name brands but can't compare quality wise. They work and are reliable, but can't compare to the big name brands.
Garmin and Magellan are actually two different companies, both of which manufacture and sell GPS devices. One big advantage of GPS devices is their ability to be updates with new maps on a periodic basis.
The smallest pocket gps is about 5 inches big and is not as accurate as some of the other makes and models due to its size but still is very reliable.
You can find Garmin GPS online at many electronics retailers. These retailers are big name brands such as Best Buy and Circuit City, as well as Amazon.com
It will depend upon which type of GPS you have as many accessories will only fit one particular brand or model. You can either go to the store from which you purchased your GPS or many big box and electronics store will carry a variety of accessories.
Cobra GPS systems are the highest rated most up to date GPS systems that offer a LCD touchscreen. They have them as big as a six and a half and can be programmed just like the small ones.
Yes automotive GPS units use ram. Almost any product that has a cpu also has a ram. But because a GPS unit isn't a full blown pc, it won't have a very big ram.
24 active with 6 spares.
You can purchase a motorcycle GPS online at Amazon or eBay. Big box stores found in many cities would also carry GPS navigators specific to motorcycles. These stores can include: Wal-Mart, Best Buy and Costco.
Nothing. A gps is the same as a gps.