The AC391 from Teledyne Microwave Solutions is a RF Amplifier with Frequency 10 to 250 MHz, Small Signal Gain 22.7 to 24 dB pk-pk, Gain Flatness ±0.5 to ±0.7 dB, Noise Figure 3 to 3.5 dB, Output Power 17.5 to 19 dBm. Tags: Drop-In, Power Amplifier. More details for AC391 can be seen below.