The BSL-177212 from Atlantic Microwave is a SATCOM Amplifier System with Frequency 17.7 to 21.2 GHz, Small Signal Gain 20 dB, Gain Adjustment Range +/-0.5 dB, Noise Figure 7 dB, AC Voltage 80 to 240 V, 50 to 60Hz. Tags: Rack Mount, Banchtop, Line Amplifier. More details for BSL-177212 can be seen below.