Alison Microwave (AML). Model AD200-8. Inline amplifier. A single stage amplifier that is feed by a constant current source and having gain set at the factory. Gain set at 20 dB for 1.5 GHz. Water proof to IP67 standard and in a cylindrical aluminum case which is hard anodised for corrosion resistance. Case or body is about 2-1/8" long and about 1-1/2" in diameter. This amplifier is power passing so it will feed power to the antenna and works from 5V to 25V DC. Current consumption is about 15mA max. The amplifier uses N Female connectors. Frequency response is flat from 1 GHZ to 2 GHz and in testing the 20 dB gain is spot on across that range so it would be good for other uses (1.2 GHz Ham for example).  Power enters at the receiver side of the amplifier. New old stock. (warehouse locations 1594/1590/1591/1469/1593)