For improved DAB signal quality - in line amplifier In-line amplifier provides good signal level for weak areas 3m cable allows radio to be positioned anywhere in the room whilst locating the aerial for best reception Free standing Specification Width: 425mm Depth: 105mm Height: 55mm Weight: 0.72kg Colour: Black Pack Contents: Integrated cable with F-Type plug, in-line amplifier, short F-Type Cable and Power Supply Barcode: 5050171046883 Power supply: 5vDC Amplified gain: 20dB Operating frequency: 174-240MHz