ATTENTION: Before buying pls check what channels are available in your area by searching these website: "antennaweb.org" or "antennapoint.com". Just input your zip code. Channel reception may vary depending on geological environment. Above checked, if up to 5 channels available, we advise not trying this kind of indoor antenna. Pls check your TV first. If digital tv, just connect the antenna to the tv. If analog tv, need a converter box to connect the tv and the antenna. Specification 1. Reception Range: 60 miles with amplifier 2. Power Supply Connector: USB 3. Voltage: 5V 4. Amplifier Kit：Yes 5. Coaxial Cable: 16.4ft long 6. Transmission: Support 1080p HD and 4K TV 7. Frequency: VHF 174-240MHz, UHF 470-862MHz Installation Step 1: Stick the antenna onto the window/wall. Step 2: Connect to ANT IN on the back of any digital TV or the set-top box. Step 3: Set TV to Antenna mode. Step 4: Scan the TV channels.When the signal quality is low,adjust the location of the antenna or rotate it towards TV station. Step 5: Pls rescan whenever you move the antenna location You may face below issues after scan: 1. The antenna doesn't work with or without the amplifier. How to solve: make sure your tv is digital tv, if it is analog tv, pls have a digital converter box to connect tv and the indoor antenna. Pls refer picture four above. 2. The picture quality is low: How to solve: Put the antenna at a higher place such as towards or over the window to reduce obstocles If within 30 miles from tv stations, pls try not to use amplifier. You can check at website "antennaweb.org",too Warranty and Guarantee If you are not satisfied, pls don't hesitate to contact us, we provide a 45 DAYS MONEY BACK or REPLACEMENT and 1 YEAR guarantee service, we will handle within 8 hours.