The QRF-2110-2170-60 from Qualwave is a Band Stop Filter with Stopband Frequency 2110 to 2170 MHz, Bandwidth 60 MHz, Insertion Loss 3 dB, Rejection 60 dB, VSWR 2.00:1. Tags: Module with Connectors. More details for QRF-2110-2170-60 can be seen below.