The PSPL5370 Opt. 20DB from Tektronix, Inc. is a Pick off Tee with Frequency DC to 25 GHz, Pick-off Insertion Loss 20.4 to 20.5 dB, Through-line Loss 0.4 dB, Input power 4 W, Return Loss 13 to 24 dB. Tags: Module with Connectors. More details for PSPL5370 Opt. 20DB can be seen below.