The VZX-6984A4 from Communications & Power Industries is a SATCOM Amplifier System with Frequency 7.9 to 8.4 GHz, TWT Power 400 W (56.02 dBm), Flange Power 350 W (55.44 dBm), Small Signal Gain 75 to 78 dB, Gain Adjustment Range 0 to 20 dB. Tags: Rack Mount, TWTA. More details for VZX-6984A4 can be seen below.