Gain: VHF, 31dB; UHF, 36dB. Dimensions: 83/4inch (L) x 17/8inch (H) x 33/4inch (D). NOTE ABOUT USE and POTENTIAL FOR STATION LOSS: A signal amplifier/booster will only IMPROVE a signal that is already present. This booster should work for any channel that is used by off-air TV stations.There are always situations where any amplifier does not help. If the station is particularly weak, but there are other very strong channels nearby, even radio stations, such radio station signals may BLOCK OUT a TV stations. This amplifier amplifies everything within the frequency range specified, to the point where a local strong station could create interference that covers up the weak station you are attempting to receive. Estimated ACTUAL Quantity Available: 2. The item "Antenna Signal Amplifier/Adapter Heavy Duty (36dB) 54Mhz-812Mhz Powered" is in sale since Friday, September 17, 2021. This item is in the category "Consumer Electronics\TV, Video & Home Audio\TV, Video & Audio Accessories\TV & Video Accessories\Signal Amplifiers & Filters". The seller is "mycablemart" and is located in Minneapolis, Minnesota. This item can be shipped worldwide.