The ELCA2700B60B from ECHO Microwave is a Low Pass RF Filter with Frequency 2300 to 2700 MHz, Bandwidth 400 MHz, Insertion Loss 1 dB, Rejection 60 @ 4~14GHz, 40 @ 14~21GHz, Return Loss 15 dB. Tags: Module with Connector, Cavity Filter. More details for ELCA2700B60B can be seen below.