FM converter

Hi all!
How does this thing work? Is it a radio without an amplifier, or?
I am having the idea that you could use it in combination with an AM radio? Would that work? Is that the meaning from the start?
Thanks!
How does this thing work? Is it a radio without an amplifier, or?
I am having the idea that you could use it in combination with an AM radio? Would that work? Is that the meaning from the start?
Thanks!