The WHNX6-2300-10000-80-26500-3 from Wainwright Instruments is a High Pass Filter with a passband from 2.3 to 26.5 GHz. The cutoff frequency (Fco) of the filter can be customized between 2.3 to 10 GHz. This filter has an insertion loss of under 1.2 dB and a stopband attenuation of over 80 dB. The HPF can handle an input power of up to 3 watts CW. It is available in a module with connector that measures 31 x 10 x 10 mm with PC 2.92 male/female connectors.