The QBH-137 from Spectrum Control is a RF Amplifier with Frequency 10 to 200 MHz, Gain 12.7 dB, Gain Flatness ±0.8 to 1 dB, Noise Figure 3.5 to 3.9 dB, P1dB 19 to 21 dBm. Tags: Drop-In, Low Noise Amplifier. More details for QBH-137 can be seen below.