Can be used to amplify UHF (terrestrial TV including FreeView) and VHF (FM and DAB radio) aerial signals in weak reception areas. Only one input and one output so you will need one for each aerial lead. I'm using it to boost the signal before taking it to an 8-way distributor to provide decent FreeView reception to TVs in several rooms.
Amplification for this model is 20bB. It has a variable pot if you want to reduce this. There is also a 30dB model if you need even more amplification: 30dB Cable TV Amplifier with Active Return Path. BTW, don't be confused by the reference to 'Cable TV' in the description - the 30dB model works perfectly well with standard TV and radio signals.