The UTO-558 from Teledyne Microwave Solutions is a RF Amplifier with Frequency 0.01 to 0.5 GHz, Small Signal Gain 10 to 13 dB pk-pk, Gain Flatness ±1 dB, Noise Figure 5.5 to 9.5 dB, P1dB 25.5 to 27 dBm. Tags: Power Amplifier. More details for UTO-558 can be seen below.