The BPM-2A-250 from Crane Aerospace & Electronics is a Modulator with RF Frequency 2 to 500 MHz, Carrier Suppression -40 dBc, Insertion Loss 2.5 to 3.5 dB, Amplitude Balance 0.10 to 0.3 dB, Current -15 to 15 mA. Tags: Module with Connectors. More details for BPM-2A-250 can be seen below.