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Broadcast & Communication Antennas

High Power RF Switches

 
TCI manufactures a wide range of balanced RF switches that are used in HF and MF broadcast antenna systems. TCI RF switches are rugged and reliable with a long, proven track record of superlative operation at numerous transmitting stations around the world.

Balanced switches are used within HF dipole arrays to provide horizontal and/or vertical beam slewing. Balanced switches are also used in an antenna field to connect an open-wire transmission line to different antennas. Balanced RF switches generally operate at the 300 or 328 Ohm impedance level and handle the average and peak powers of a 500 kW transmitter. Since balanced switches are usually installed outdoors, TCI designs them to operate in a wide range of environmental conditions.





Coaxial switches are most frequently used in RF switching matrices in transmitter buildings, where they allow transmitters to connect to different antennas or to a dummy load. Coaxial switches are available in 50 or 75 Ohm impedance levels and sizes up to 254 mm (10 inches). Coaxial switches are also used in MF antenna systems to provide beam switching and earthing. Coaxial switches are generally designed to operate within a building. TCI does not manufacture this type of switches, but can obtain them from high-quality vendors and provide them as part of a TCI antenna and transmission line system.