The GRF2873 from Guerrilla RF is a RF Amplifier with Frequency 3 to 4.2 GHz, Gain 15.9 to 16.9 dB, Noise Figure 0.65 dB, Output Power 17 to 19 dBm, Output Power 0.05 to 0.08 W. Tags: Surface Mount, Low Noise Amplifier. More details for GRF2873 can be seen below.