Is This An Ad For An FM Radio To TV Converter?

I was looking through the ads in an old Vane A Jones book from 1958 that lists radio and TV stations in North American.

Anyway I came across this ad

(note: the image is 1000 X 1571 so it may be slow to load on some connections)

It looks like it’s advertising a product to be able to receive FM radio on your TV set.

I’m not 100% sure though. Can someone tell me definately if this is what it does?

I would think you could just go out and buy an FM radio, but this is from 1958 before FM took off so perhaps this would be cheaper

Yes.

http://www.somerset.net/arm/fm_only_photo_gallery_2.html

Thanks and thanks for the links