Features: brand new and high quality This RF Amplifier features low noise figure, is a LNA RF Amplifier. Generally used as a high frequency or intermediate frequency preamplifier for a wide range of radio receivers, as well as amplifying circuits of highly sensitive electronic detection devices. In the for case of amplifying weak signal, the noise of the amplifier itself may be very serious, so it is hoped that this noise will be reduced to improve the signal-to-noise ratio of the output. Application: LNA for the main mobile communication base station infrastructure applications, such as wireless communication transceiver card, tower mounted amplifier (Tma), combiner, Repeaters, and distal/digital wireless wide band end equipment application design. This RF low noise amplifier LNA is 50-4000MHz, NF = 0.6dB. Specifications: LNA: 50-4000mhz NF: SPF5189Z LNA0: 0.6 dB Amplifier: FM Color: green Size: approx. 23x28mm/0.91x1.10in Material: Electronic component Package Includes: 1 x LNA 50-4000MHz SPF5189 RF Amplifier Board note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We are sure that the style is the same as the pictures show. Please allow slight dimension difference due to different manual measurements.