Ideal for Strong and Medium Signal AreasUHF/VHFAnalogue and DigitalFreeview/DABHD CompatibleThis aerial comes fitted with active noise filters and GSM block filters to stop interference from such devises as mobile phones.The inbuilt 4G LTE Block Filter eliminates 4G interference. The patented "Signal Clear" technology helps define picture quality.The aerial can be rotated and tilted accordingly for optimum reception and has two telescopic aerials and a variable gain control. (42dB)