The LA1050-0S from R & K Company Limited is a RF Amplifier with Frequency 600 MHz to 4.2 GHz, Small Signal Gain 42 to 44 dB, Gain Flatness ±2.5 dB, Noise Figure 1.2 to 2 dB, Output Power 20 dBm. Tags: Low Noise Amplifier. More details for LA1050-0S can be seen below.