The QLA-2000-18000-21-40 from Qualwave is a RF Amplifier with Frequency 2 to 18 GHz, Gain 21dB (Small Signal ), Small Signal Gain 21 dB, Gain Flatness ±1 dB, Noise Figure 4 dB. Tags: Low Noise Amplifier. More details for QLA-2000-18000-21-40 can be seen below.