The QRF-2000-2300-50 from Qualwave is a Band Stop Filter with Stopband Frequency 2000 to 2300 MHz, Bandwidth 300 MHz, Insertion Loss 1.5 dB, Rejection 50 dB, Power 10 W. Tags: Module with Connectors. More details for QRF-2000-2300-50 can be seen below.