Donwell Digital TV Antenna Indoor HDTV Amplified Digital TV Antenna Enhanced 4K 1080P Up to 300 Miles of Local Channels, Black

Please contact us if there is any problem, we are always here to help :-) Color: Black Polarization: Linear Voltage: 5V Operating frequency: VHF(172-240Mhz)\UHF Ultra High Frequency(470-860Mhz) Support resolution: 4K, 1080P Voltage VSWR: =1.5 Impedance: 75O Signal enhancement:36DBI Reception range: 300 miles Line length: 16ft Connector type: IEC head + USB, with additional F adapter Operating temperature: -45 ~ 85? Storage temperature: -45 ~ 85? packing list. TV antenna *1 F male connector *1 (IEC head and USB on the coaxial cable) Warm Tips: 1. The TV must be a digital TV to use this digital antenna. If it is an analog TV, you need a digital converter box (set-top box). 2. Rescan the channels after moving the antenna. Please visit - "//dtv.gov/maps" to find out what channels are available in your area. 3. You should only attach it to a table, wall or window after you are sure you can receive the TV channel signal. 4. Areas with large obstacles, such as valleys, mountains, etc., will reduce the effective range. 5. TV antennas should be kept away from devices that consume a lot of power, such as air conditioners elevators, hair dryers and microwave ovens. TV antenna can't receive signal or antenna can't reach the expected effect, what should I do? 1) Check if the antenna is properly connected to HDTV or third party HD receiver, such as TV set-top box. 2) Rescan the channel and set the mode to Antenna or Air in the TV's setup menu, please refer to the TV manual for detailed instructions. 3) If you previously saw a snowy (but watchable) image on an analog TV channel, you may not have a strong enough signal to display this new format. Try repositioning the antenna in a different location, sometimes moving it a few feet will make a difference.