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 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 (), combiner, Repeaters, and distal/digital wireless wide band end equipment application design. This RF low noise amplifier LNA is 50-4000MHz, = 0.6dB. Model Number: SPF5189 with Shielding Shell RF Signal Receiver Low Noise Wideband Rad : SPF5189Z Amplifier: FM Size: .34 x 25mm color:As shown Material:PC+Metal Package Contents: 1 x RF Amplifier Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.