The 3007-SMA from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 430 MHz, Stopband Frequency 549 MHz, 3 dB Cutoff Frequency 430 MHz, Lower Rejection 20 dB@549 MHz, Upper Rejection 0.5 dB@549 MHz. Tags: Module with Connector. More details for 3007-SMA can be seen below.