The SPA-035-43-20-SMA from Fairview Microwave is a RF Amplifier with Frequency 3.1 to 3.5 GHz, Small Signal Gain 43 to 47 dB pk-pk, Gain Flatness 1.5 dB, Noise Figure 3.5 dB, Output Power 42 to 43 dBm. Tags: Power Amplifier. More details for SPA-035-43-20-SMA can be seen below.