The JFCB2700T2900SF from JQL Electronics is a Bandpass Cavity Filter with a passband from 2.7 to 2.9 GHz. It has a passband insertion loss of less than 1.5 dB and provides a rejection of 40 dB both above and below the passband. This 50-ohm filter has a group delay of 2 ns and a return loss of 14 dB. It offers extreme stability over a temperature range from -40°C to +85°C. This cavity filter is available in a module that measures 4.075 x 2.087 x 1.181 inches and has SMA (female) connectors. This bandpass filter is ideal for telecom applications.