Log Periodic Aerials differ from traditional Yagi-style aerials by offering a flat signal increase along the whole of the frequency range. It also rejects a lot of the signals that can cause interference. This gives a much better balanced signal across all channels. More importantly the design gives for a much better appearance and enables the aerials to be more discreet and hidden. They have a much lower wind-load meaning they are less affected by wind and weather so better for those situations where a traditional big aerial might get damaged or damage your building.