New variable AX-909G5 Directional antenna system now come with internal upgrade also known as G5 tech, has become the one antenna system that will fit all range of signal strength conditions. 80% of the problem in getting great signal was picking the right type of antenna for different locations. AX909-G5 removed all the uncertainty of guessing which antenna you need by offering three optimum settings on the new G5 system; the Passive Mode for all strong, moderate signal stations within a 40 mile range, the Active Mode for any weak signal stations in a 40~100+ mile radius*, and the Variable Mode for those hard to get HI-V and in-between stations. The bottom line is, if you have signal, the G5 directional antenna system will work! This antenna also uses the patented back dish system, which eliminates the feedback problem great for areas with trees and tall buildings.