Yes, you CAN use a TV antenna for FM reception, though the performance won't be as good as a dedicated FM antenna.
TV antennas have compromises built in.. they generally combine VHF lo and VHF high bands and many also have a set of UHF elements. All of this it tied together and the efficiency is greatly compromised. Also, there is no elements cut for the 3-meter FM broadcast band. You must rely on the VHF-lo elements, which are designed for 54-108Mc. This has directional selectivity limitations:
Because the wavelength of the signal is too small for the VHF-lo elements, the antenna's front to back ratio (it's ability to select signals directly in front of it, but reject signals from behind) is very poor to nonexistent. So a TV antenna is not much good for FM "DX" listening, where one must be able to, say, reject Hartford, CT, in order to get Boston, MA, just 20° east.
TV antennas tend to have many lobes, scattered around the azimuth plane, looking sort of like a starfish pattern, at 88-108Mc. The behavie psuedo omni-directionally at these frequencies. You'll pick up lots of stations in a metro area or suburb, but you'll also have a lot of non-local stations with co-channel interference from other non-local stations. For instance, you might be trying to receive a station in Patterson, NY, 23 miles away, but receive interference from a New London, CT station on the same frequency, 72 miles away off the back of the antenna beam. A dedicated FM antenna will deal with this much better.
It all depends on how important FM reception is.
If you ask me, personally, the FM band is not worth the price of a tuner anymore. It's garbage "music" for the kiddies and all heavily processed til it there's only 1/2dB of dynamic range left.
I only have an FM tuner for one reason, because I host a radio show and need to monitor the FM station that carries it, so I can relay it over my web site's audio feed for international listeners. Otherwise I would have sold the tuner by now.
Hope this helps..
