Not exactly aesthetically pleasing, but I've been using this self-made DIY indoor UHF TV aerial for my bedroom TV now for a while. It's simply two empty 330ml cans of Coke Zero (old-ish ones as all new Coke cans now sold in NI are taller & slimmer in size) taped to a wooden coat hanger, that is hung from a curtain rail with some reusable cable ties. Compared to many other indoor UHF aerials I've used in the past, it's surprisingly effective and works very well. The "downlead" connection is simply connected via a crocodile clip to each can tab (it's best to try and keep each can near enough to each other without either the can or any tab/clip connected to it from touching each other) that is then connected to a single WF65 coax lead using a 5A electrical junction box. The main Freeview TX from here is Brougher Mountain while across the border the best Saorview TX is Truskmore in Co. Sligo. Fortunately both sites are within a 30 degree arc of each other at my RX end and a simple aerial like this is easy to position to get both sites at a good level. I think what makes it work so good is the size and shape of the cans - it's essentially a "fat" diploe that (a) is able to provide a bigger signal strength level due to the large surface area of the can(s), and (b) in general a thicker dipole can provide a better beamwidth than a thinner dipole, and cover the present UHF TV band from E21 to E48 quite well.
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...a coat hanger, two tin cans and some wire...
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...RTÉ2 from Truskmore at 71km/45 miles (line of sight - just!), Channel E42 (2RN Mux1)...
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...RTÉ One again from Truskmore, Channel E42 (2RN Mux2)...
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...BBC One NI HD from Brougher Mtn, 13km/8 miles on Channel E37 (PSB3 Mux). The towers on Brougher can be seen from another room in the bedroom on a clear day...
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...finally Dave from Brougher Mountain on Channel E24 (COM5 Mux). Unusually compared to other Freeview multiplexes the COM4-6 multiplexes from Brougher Mtn are 10db down on the PSB multiplexes (20kW PSB, 2kW COM), the reason is to limit co-channel interference to the PSB multiplexes transmitted from the Divis transmitting station near Belfast.