MT1129 is a low noise amplifier for radio. The amplifier is made with TQP3M9037 high-linearity, ultra-low-noise chips for Qorvo. MT1129 can be connected to all kinds of radio receivers, radios, SDRs, spectrum analyzers, etc. : Model number: MT1129 Dimensions: 78 x 46 x 45mm/3.1 x 1.8 x 1.8inch (including connectors) Charging voltage: DC 5V Battery: 4.2V 350mAh Antenna/input interface: SMA-K Output interface: SMA-JE Charging connector: Type-C Frequency range: 100K-6GHz Noise figure: Less than 0.8dB Gain: 20-35db Impedance: 50Ω Net weight (with battery): 36g/0.08lb G.W.: 0.15kg/0.3lb Color: Black Material: Aluminum Alloy Package Contents: 1 x Low noise amplifier 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.