The A-VGAL1-3028-B5B5 from ETL Systems is a RF Amplifier with Frequency 850 MHz to 2.15 GHz, Gain 30 dB, Gain Flatness ±0.4 dB, Noise Figure 12 dB, Output Power 15 to 18 dBm. Tags: Variable Gain Amplifier. More details for A-VGAL1-3028-B5B5 can be seen below.