The BVA518 from BeRex, Inc. is a RF Amplifier with Frequency 5 MHz to 4 GHz, Gain 19.1 dB, Noise Figure 5.8 dB, Output Power 18.6 dBm, Output Power 0.08 W. Tags: Surface Mount, Digital Variable Gain Amplifier, Gain Block. More details for BVA518 can be seen below.