The ERA-4+ from Mini Circuits is a RF Amplifier with Frequency DC to 4 GHz, Gain 13.4 dB, Noise Figure 4.2 dB, Output Power 40 to 17.3 dBm, Output Power 10 to 0.05 W. Tags: Surface Mount, Power Amplifier, CATV Amplifier. More details for ERA-4+ can be seen below.