Last few months I keep getting no signal on my LG freeview TV I called digital UK they sent engineer who said his suprised I get any signal at all wotj the Ariel in the loft. I have a signal boost thing which a Ariel engineer came to install. he also said I'm lucky to get signal as it's hampered by trees then training further down towards the mast. Any ideas? Do.i have to get sattelite dish ?