The P-CPM-300-4 from Crane Aerospace & Electronics is a Modulator with RF Frequency 225 to 400 MHz, P1dB 12 to 15 dBm, IP3 15 to 17 dBm, Voltage 15 V, Insertion Loss 11 to 12 dB. Tags: Module with Connectors. More details for P-CPM-300-4 can be seen below.