The XTD-500DBS from Comtech Xicom Technology is a RF Amplifier with Frequency 17.3 to 18.1 GHz, Small Signal Gain 70 dB pk-pk, Gain Flatness ±1 to 4 dB, Harmonics -60 dBc. Tags: Power Amplifier, Travelling Wave Tube Amplifier. More details for XTD-500DBS can be seen below.