The HE188A from Sainty-Tech Communications Limited is a RF Amplifier with Frequency 1000 to 2000 MHz, Gain 10.5 dB, Gain Flatness ±0.5 dB, Noise Figure 9.5 dB, Output Power Limit 14 dBm. Tags: Limiting Amplifier. More details for HE188A can be seen below.