The ALQ2-NMNFB from L-COM is a RF Surge Protector with Frequency 2300 to 2700 MHz, Insertion Loss 0.1 dB, Operating Temperature -40 to 100 Degree C, Surge Current 20 to 50 kA. Tags: Quarter-Wave Shorting Stub (QWS). More details for ALQ2-NMNFB can be seen below.