The JTM-2A Series from Crane Aerospace & Electronics is a Modulator with RF Frequency 10 to 1000 MHz, Voltage 5 V, Carrier Suppression 30 dB, Insertion Loss 6 to 9 dB, Amplitude Balance 0.5 to 1 dB. Tags: Module with Connectors. More details for JTM-2A Series can be seen below.