The WR19 narrowband bandstop filter from Exceed Microwave is 10 dB notch between 50.265 to 50.34 GHz. Both sides of the passband have low insertion loss and good return loss.

Key features of BSF-W-00193 include very narrow bandwidth rejection, low insertion loss across passband and 15 dB return loss. 

The filter is AS9100D/ISO9001:2015 certified and ITAR registered.