The 697-20-1 from MECA is a High Power Fixed Attenuator which operates from DC to 3000 MHz with an attenuation of 20 dB (Other Attenuation options are available - 3, 6, 10, 30 and 40 dB). It can handle up to 150 W of average power and 1000 W of Peak Power. The attenuator is available with N Type Connectors and has a heat sink.