FILTERS & DIPLEXERS FILTERS & DIPLEXERS Waveguide Diplexers (CDF) Band Pass Filters (CBF) High Pass Filters (CHF) Notch Filters (CSF) — (Contact the factory) Coaxial Diplexers (CDF) Band Pass Filters (CBF) High Pass Filters (CHF) Low Pass Filters (CLF) Notch Filters (CSF) — (Contact the factory)