The ALH503 (-GB) from Northrop Grumman Corporation is a RF Amplifier with Frequency 80 to 100 GHz, Gain 14 to 16 dB (Linear), Noise Figure 4.9 to 5 dB, Input Return Loss 6 dB, Supply Voltage 2 V. Tags: Die, Gain Block Amplifier. More details for ALH503 (-GB) can be seen below.