The HPA 2500B from ND SatCom GmbH is a SATCOM Amplifier System with Frequency 5.8-6.425/7.9-8.4/13.75-14.50 GHz, TWT Power 500 W, Flange Power 325 to 420 W, Small Signal Gain 73 dB, Gain Adjustment Range 0 to 30 dB. Tags: Module with Connectors, TWTA. More details for HPA 2500B can be seen below.