Feature: [Professional]High linearity,ultra low noise gain block amplifier. High linearity: +35dBm output IP3; high input power ruggedness, +22dBm continuous wave. [Stable Performance] RF amplifier ultra bandwidth, high reliability, not easy to corrosion and fall off. Amplifier module with wide frequency range, high gain, low noise figure, unconditionally stable. [Parameters] Low noise amplifier module,+20dB of RF Gain at 35-2000MHz, input and output impedance: 50, bandwidth: 0.1MHz-6GHz. [Appliable] RF amplifier has excellent performance, excellent uniformity and high reliability. It is suitable for shortwave, FM radio, remote control receiver, cable TV , etc. [Power Supply]The product does not include a battery, but you can install a 3.7V 300mAh Lithium Battery in the device. 1.95GHz at 20dB Low Noise Amplifier, 0.1MHz~6GHz Full Band RF Power Preamplifier, SMA Female RF Wideband Amplifier Broadband Module Receiver for Shortwave, FM Radio(Without Battery) 1.Does HT004 LNA include battery? No, this is the battery-free version. 2.How to supply power to HT004 LNA? Move the black button to the Tag"USB" Connect the USB cable with a power supply of no more than 5V 1A Please note that using more than 5V 1A power supply will cause damage to the HT004 LNA Cannot use 5V2.4A power bank to charge this device! 3.Can I install a battery inside the HT004 LNA? How do I pick the right battery? Yes,We have reserved space for battery installation Recommended battery specifications: Compatible with 3.7V300mAh/3.7v500mAh battery Battery size Length x Width x Thickness(30 x 30 x 6mm) You can search keyword "3.7V 500mAh 603030 " on the platform. Specification Item Type: Low Noise Amplifier Product Model:HT004 Material: Metal Built-in TQP3M9037-LNA Frequency Range: 0.1MHz-6GHz Connector: SMA Female Gain: 20dB Input, Output Impedance: 50 Input Voltage: 5V 70mA Battery Type: without battery Product Size:68 x 40 x 15mm / 2.7 x 1.6 x 0.6inch Color: silver gray Package Contents: 1 x Low Noise Amplifier (Without Battery) 1 x USB Cable 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.