This is a wideband LNA with an extremely low noise .The -103 + chip is produced by mini-circuits.It is a new modern generation of low noise ultralinear monolithic amplifier with ultra high IP3, high dynamic range and output and extremely low noise .To maximum dynamic range and linearity with the lowest possible noise .28 MHz = G 22 dB - = 0.70 dB50 MHz = G 25.7 dB - = 0.55 dB145 MHz = G 25 dB - = 0.50 dB435 MHz = G 20.4 dB - = 0.62 dB1090 MHz = G 14 dB - = 0.80 dB1296 MHz = G 13.2 dB - = 0.85 dB2320 MHz = G 7.5 dB - = 1.7 dBOperating frequency: 50M-4GHzPower supply: DC9-15VDC : DC-022B inner core 2.0 round needleConnector: 2 x SMA femalePROBE EMC EMI Near Field Probe:1. Working frequency: 9K-3G;When in use, keep your hands from the PCB board.2. Weight: 21 grams3. Connector: SMA female head (outer teeth and inner hole) Colour:blue+green+blackMaterial:PCB+metalPackage Contents:5 x probes 1 x cable1 x amplifierOnly 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.