The TL-CRYOCULF01-01 from Talent Microwave Inc is a Low Pass RF Filter with Frequency DC to 1 MHz, Stopband Frequency 100 MHz to 18 GHz, Insertion Loss 2 dB, Rejection -80 dB @ 100MHz-18GHz, Upper Rejection -80 dB. Tags: Connectorized, Cryogenic Filter. More details for TL-CRYOCULF01-01 can be seen below.