I've been looking for my car a magnetic antenna that keeps well on the car roof and good transmission and reception characteristics. I have what is sought with this antenna found! The magnetic base keeps the bomb on the roof and keeps the antenna without slide and at a speed of 170 km / h bombproof. The transmitter and receiver are self-managed and not of bad parents. With my 4 watts spark a distance of> 20 km to be bridged. The communication remains good even under bad conditions. When I measured the standing wave I was pleasantly surprised. Without something to adjust, I had a standing wave of 1.5: 1.0. Readjust by something I now have a standing wave of 1.2: 1.0. This is perfectly adequate for my needs. I would recommend this antenna without any ifs and buts CB radios. It's a good antenna, where the price-performance ratio is absolutely top. Therefore from me 5 stars!