 AM radio station WRIZ constructed radio towers in Stiltsville in 1967, on the south side of the Biscayne Channel.It became radio station WRHC in 1985, and used the Stiltsville towers for daytime broadcasting at 10,000 watts on 1550kHz, until the site was decommissioned in approximately 1990.Because salt water is highly conductive, it makes an excellent ground plane for signals in the mediumwave radio band, which allowed the station a greater broadcast range on the same power.