The QBH-181 from Spectrum Control is a RF Amplifier with Frequency 10 to 200 MHz, Gain 24.4 dB, Gain Flatness ±0.6 to 0.8 dB, Noise Figure 2.8 to 3.1 dB, P1dB 14.5 to 16 dBm. Tags: Drop-In, Low Noise Amplifier. More details for QBH-181 can be seen below.