The QBH-271 from Spectrum Control is a RF Amplifier with Frequency 10 to 150 MHz, Gain 13.5 dB, Gain Flatness ±0.5 dB, Noise Figure 6.5 to 7.1 dB, P1dB 26 to 27 dBm. Tags: Flatpack, Gain Block, Driver Amplifier, Power Amplifier. More details for QBH-271 can be seen below.