Kintronic Laboratories offers two isocouplers that allow PCS and wireless Internet antennas to be mounted on “hot” AM towers. The FMC1.9G-PCS covers the range of 1.85 to 2.05 GHz; its counterpart, the FMC2.4G-SS, covers 2.4 to 2.5 GHz. Custom isocouplers for other wireless telecom bands are available. Six of these isocouplers, a common configuration in a PCS installation, can be mounted on a single, custom fabricated plate. The company says they use a unique microwave coupling technique. According to President Tom King, a 3D electromagnetic model was developed at Los Alamos National Laboratory to define the initial engineering design, which was refined through R&D to optimize bandwidth and insertion loss features.