FM Indoor or Portable Dipole Stereo HD Antenna with 300 Ohm Transformer for Older Tuners It performs better than any indoor FM antennas listed on Amazon; this simple design will give you excellent FM reception affordably. It is packaged to be turnkey, providing everything you need for best indoor or portable reception including 9' of coax and a 300 ohm transformer. To unleash the true reception power of this antenna mount it vertically as high as you can get it in your home on an outer wall or window. It is fully omni-directional when mounted vertical and it has directional characteristics towards the flat side when mounted as rabbit ears or horizontal which helps handle multi-path and other issues that are characteristic of FM broadcast band reception. You'll like the simple, hide-able design of the antenna. Though simple, it works in the way other simple antennas only promise because you can tune it right to the station you are trying to receive.