This is a wideband LNA with an extremely low noise figure. The -103 + chip is produced by Mini-Circuits. It is a modern generation low noise ultralinear monolithic amplifier featuring ultra-high IP3, high dynamic range, high power output, and extremely low noise figure. Designed to maximize dynamic range and linearity with the lowest possible noise figure. 28 MHz = G 22 dB - NF 0.70 dB 50 MHz = G 25.7 dB - NF 0.55 dB 145 MHz = G 25 dB - NF 0.50 dB 435 MHz = G 20.4 dB - NF 0.62 dB 1090 MHz = G 14 dB - NF 0.80 dB 1296 MHz = G 13.2 dB - NF 0.85 dB 2320 MHz = G 7.5 dB - NF 1.7 dB Operating frequency: 50 MHz - 4 GHz Power supply: DC 9-15V Net weight: 63 grams DC jack: DC-022B, 2.0 mm center pin Connector: 2 x SMA female Color: Blue Material: Aluminum alloy Package Contents: 1 x EMC preamplifier Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may vary by +/- 1-3 cm.