Is this a FM aerial?

[johnthedoctor]

Dumped in an alley close by, probably a victim of the gales at New Year.
Is it good for FM radio?

 

[AndrewT]

Hi,
measure the directors and reflectors.

If they are about a foot from tip to tip then it is a UHF TV aerial for bandA

A bit shorter and it works for higher frequencies, Band B upwards.

If the tip to tip are about 5feet then it might work for FM but it's going to be damned heavy to lift up to the roof. I have never seen a high gain FM aerial with that many elements (39 if I can still count).