Interior y exterior.
Omnidireccional This FM Antenna receives distant FM stations from all directions! A more powerful FM Antenna than any single element dipole antenna, the ST-2 vertical is probably one of the best things ever to happen to FM listeners in urban and fringe reception areas alike. Concentrating its reception "focus" only on the horizontal plane, the ST-2 FM Antenna is capable of getting more signal to your FM tuner with less "flutter" and "fading." The ST-2 FM Antenna is also less susceptible to "multipath interference," due to its unique vertical polarization. Right from its PH17-7 stainless steel whip through the gold-plated coil coupling to the stainless-steel encased, precision-wound loading coil, the ST-2 is built tough. Yet it passes the most fragile of FM signals to your FM tuner's circuitry with the kind of strength sometimes found only with much larger, multi-element fm antennas. Being a 1/2 wave design and not requiring a "ground plane" or counterpoise," it is equally at home mounted on a mast, a balcony, hanging in the window or from a tree. The ST-2 FM Antenna offers greatly enhanced FM tuning performance,and signal strength. The ST-2 FM Antenna comes to you ready to install. It is 54 inches in length, and furnished with a stainless steel "L" mounting bracket for ease of installation both in and outdoors. + info: http://www.magnumdynalab.com/fmantenna-st2.htm