The Global Positioning System originated as a military project during the Cold War. After its testing and development were concluded, the US government began to allow civilians to use the system. To access the system, a user must first receive the signal. However, in certain circumstances the antenna provided inside the receiver is insufficient. Valleys, forests or even poor weather can be enough to require an additional antenna. With little cost and time, any user can construct his own external antenna. Tips Warnings Writer Bio
