I have tried that as an experiment with both a Comet GP-15 tri-band antenna (6M / 2M / 440MHz.), years ago and then later with a discone antenna. On FM radio? It sucked. And, what local stations it did RX was plagued with multipath fuzz noise. The discone wasn't much better. maybe in a crowded, metro area it would be OK to do that, but for FM radio DX? Nope. Now, one thing that the CP-15 did do was RX analog TV CH2. Not well, but watchable.