No. of Elements 7 Channels Ch.5-12 Ch.21-69 Frequency Range 174-230MHz 470-862MHz Antenna Gain 4-6dBi 7-10dBi Beam Width H/V H85°V105° H55°V75° Front-back Ratio 5-10dB 8-13dB Impedance 75Ω Antenna Length 640mm Reception Distance 40Mile