I think the aerial on my roof is VHF but I'm not sure. Maybe someone can identify it from the picture below. I can pick up Freeview with it but TV 1, 2 and U (all on same channel) are patchy and sometimes unwatchable. All other channels are good. If this is a VHF aerial does it mean that the signal is strong when I can pick it up with this? And would that mean that pretty much any type of UHF aerial would do the job ok? I am in the Brook in Nelson and my local transmitter is Kaka hill, approx 3-4Km away. The Brook is a valley so I'm not sure if there is direct line of sight, but the indicative coverage map indicates 'very likely' for my area. I'm just wondering if I could select a UHF antenna myself or if I would be better off to get a professional to come out and tell me what type of aerial would work best.