Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Can't tune in UHF and VHF at the same time on newer TVs

I bought this antenna to use with a set-top box in order to receive over-the-air Digital TV. The antenna is advertised as being able to receive VHF (bunny ear dipoles) and UHF (wire loop) signals, but the antenna doesn't come with a 'band combiner'. The manual explains that if your TV or receiver only has a single 'ANT IN' connection (and not separate UHF/VHF inputs, as you may remember seeing on some ancient TVs), then you either have to buy a band combiner (at least $7 incl shipping--search Amazon for 'splitter combiner') or manually switch the screw connections when you change channels.Most DTV channels are on UHF, but standard TV is still largely on VHF in my area, so I returned this item to Amazon. I also didn't find that the UHF reception was any better than the single piece of wire I was using before (and will use until I buy a powered antenna).