The 50FHC-XXX-10-N from JFW Industries are Fixed Attenuators that operate from DC to 4 GHz. They are available in attenuation values from 1 to 60 dB and can handle up to 10 W of input power. These 50-ohm attenuators have an integrated heat sink and are available with BNC, N, RP-TNC, SMA, TNC, 4.1/9.5, 4.3/10, and 7/16 connectors.