Living in a house surrounded by very tall buildings shielding, a roof antenna is useless, therefore we installed there a parable 3 years. However, this solution forcing us to go through a relatively expensive housing and not allowing us to record programs. I bought this antenna without much hope, thinking me a refund from Amazon if it does not fulfill its role. After plugged in and turned on the switch and the TV, I immediately picked up all the DTT channels. However I write that it is a "quasi" miracle because the Freebox does not match any string, and those recognized are full of flaws. But that's enough as long as the TV is independent!