Profile: Armstrong Transmitter Co. is specialized in providing STL systems, FM antennas, passive RF products and FM transmitters of various configurations and power levels. The FMA-707, low power, non pressurized antenna utilizes the same bays as our medium power FMA-727 antennas. This design ensures stations of peak performance even when using branch fed antenna system. Each bay of the FMA-707 is built to take 500 watt input, and it is available for up to 6 KW maximum input in a 12 bay configuration. FMA-727 is our medium power pressurized antenna. The antenna bay is connected to the interbay line using a machined brass block. This design not only increases the structural integrity of the antenna system by making it mechanically more sound, it also seals tighter to ensure stable pressurization. The FMA-727 can take up to 3 KW per bay with an antenna of 4 bays or more, handling up to 12 KW.