This is a wideband LNA with an extremely low noise figure. 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 high power output and extremely low noise figure. To maximum dynamic range and linearity with the lowest possible noise figure. 28 MHz = G 22 dB - = 0.70 dB 50 MHz = G 25.7 dB - = 0.55 dB 145 MHz = G 25 dB - = 0.50 dB 435 MHz = G 20.4 dB - = 0.62 dB 1090 MHz = G 14 dB - = 0.80 dB 1296 MHz = G 13.2 dB - = 0.85 dB 2320 MHz = G 7.5 dB - = 1.7 dB Operating frequency: 50M-4GHz Power supply: DC9-15V DC SEAT: DC-022B inner core 2.0 round needle Connector: 2 x SMA female PROBE EMC EMI Near Field Probe: 1. Working frequency: 9K-3G; When in use, please keep your hands from the PCB board. 2. Weight: 21 grams 3. Connector: SMA female head (outer teeth and inner hole) Colour:blue+green+black Material:PCB+metal Package Contents: 5 x probes 1 x cable 1 x 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.