The BG18C from BeRex, Inc. is a RF Amplifier with Frequency 5 MHz to 4 GHz, Gain 19.9 to 22.4 dB, Noise Figure 3.6 to 3.9 dB, Output Power 17.3 to 20.1 dBm, Output Power 0.05 to 0.1 W. Tags: Surface Mount, Gain Block, Power Amplifier. More details for BG18C can be seen below.