The QLH1000M4X7ECS from Q Microwave is a RF High Pass Filter with Frequency 1000 to 4000 MHz, Insertion Loss 1.5 dB, Power 0.1 W, Rejection 40 dBc @ 500 MHz, Return Loss 10 dB. Tags: Lumped Component Filter. More details for QLH1000M4X7ECS can be seen below.