Highly directional UHF antenna - Narrow acceptance angle and high front-to-back ratio helps reject unwanted multipath signal corruption. Vital for urban reception of HDTV or data broadcasting... Even response- A flat forward gain slope delivers a balanced reception throughout UHF. Ensures that all channels are received to the same quality. Primary or fringe reception- The passive Silver Sensor, with 6-7dB of forward gain is perfect for primary reception areas and the amplified Power Sensor now extends the range into secondary reception areas Proven in the field - Not only has the Silver Sensor proven itself in front of the FCC but it is now the "reference antenna" for data broadcasting.