Seen lots advertised just wondered are they any good for your truck if so what would be the best aerial to use and also where are the cheapest ideally im looking for one about 10 inches(ooh err)saw one at south mimms and should have bought it then but was in a bit of a rush.Is it better to get a 240 volt one than a 12/24v one cant get my head round electrics at all 
i got 1 from comet its a goodmans digi & analogue think their £159 now i just cut the wire & connected it to 12v.
the ariel is 1 of those you see on caravans & theirs not many places i dont get digi pic forgot to say its a 15 inch flat screen.
those in truckstops r just a rip off because most tellys upto 15 inch run off 12volt.