I have had a Challenger in the back yard for 19 years. It is my only antenna. I have had very good results with the antenna. It has SWR better than 2:1 as advertised (at least in the CW portion of the bands where I operate – I haven’t really checked the upper portion of the bands. The location of the antenna is not too favorable, surrounded by trees and houses, yet it gets out well. The antenna has been trouble free all this while, with maintenance consisting of the occasional cleaning and re-tightening of screws. I am running about 1 KW into the antenna on all bands except 80, where it is limited to 500 watts. I am able to bust pile-ups in a short time. I would definitely recommend this antenna if you have limited space. It will serve you well.