The QRF-2500-2570-60 from Qualwave is a Band Stop Filter with Stopband Frequency 2500 to 2570 MHz, Bandwidth 70 MHz, Insertion Loss 1 dB, Rejection 60 dB, VSWR 2.00:1. Tags: Module with Connectors. More details for QRF-2500-2570-60 can be seen below.