KRBK in Springfield, MO, has deployed five Prostar UHF slot antennas from JAMPRO Antennas as part of a single-frequency network (SFN).
The station, the primary FOX television affiliate for Springfield and the Ozark Plateau area, has located the antennas at various sites around the area and configured them for an SFN where several transmitters simultaneously send the same signal over the same frequency channel.
One of the critical aspects of successfully implementing the SFN was engineering and producing slot antennas that complied with critical azimuth and special elevation patterns. The Jampro engineering staff worked closely with the KRBK consulting engineers in the development.
The Prostar antennas are compatible with DTV, ISDB-T and DVB-T broadcasts and are available in power ratings ranging from 1kW to 90kW. The feed lines are pressurized for protection, and the slots are radome sealed to protect the antenna from the environment.