BlueSky BA-50 GPS Re-Radiator, Repeater (10m+10m = Total 20m Cable). Plug-n-Play, easy to install and use 2. Re-Radiation GPS signal to multi-GPS receivers in 3 meter around 4. For L1, L2 band GPS signal 5. Design for use in house, testing room or R&D laboratory. BA-50 is a re-radiating equipment. It can receive the outdoor GPS satellite signal and conduct to indoor place for radiating again. When a GPS Satellite is revolving around the earth it will transmit continuously satellite signal to the earth but the strength of satellite signal will weaken to only around -125dBm when it arrived to the earth ground. Such weak signal can’t penetrate into buildings. Sometime It can be detected only in around windows area. BA-50 is built for the purpose to transmit the GPS satellite signal from outdoor to indoor, and re-radiating the receptions to operate GPS Receivers inside building or specially in house, testing room or lab. Therefore user can work the GPS equipments indoor same as using it outdoor. BA-50 contents an External High Gain Active GPS Antenna with high frequency low noise amplifier to receive the GPS satellite signal outdoor, Second High Gain high frequency low noise amplifier to increase the strength of GPS satellite signal indoor, a power regulation circuit, a signal re-radiation antenna for re-radiation signal indoor. Place the external active antenna outside the building and make sure to antenna face on sky. Connect external active antenna and indoor re-radiation antenna to BA-50. Plug 12VDC jack from AC-DC Adapter to BA-50. Place re-radiation antenna to close your GPS receiver. Power Required: 9 – 12VDC, 1A max. Overall Gain: 54dB Re-Radiation Range: 3 meter around Frequency: L1, L2 Band GPS Signal LED Indication: Blue (For Power Input) Operation Temperature: -30C +70C Operation Humidity: 5% 95% Internal Radiation Antenna : 6 cm Dipole antenna External Antenna : High Gain Active antenna with SMA Plug and 20 meter cable External Active Antenna Impedance : 50 ohm SMA Connector : providing 5V, 50mA max. Power for the external active antenna Dimension : 130 x 85 x 40mm (Main Body) Weight : 120g. 1 x BA-50 GPS Re-Radiator 1 x External GPS Active Antenna, 10m Cable. 1 x Extension Cable +10m. 1 x 12VDC Adapter. 1 x User manual. 100% tested all items before send it to you. Please contact me before you return it. Also, if you leave negative or neutral feedback, please feel free to let us know. And please give us the opportunity to resolve any problems and we will try our best to offer the 100% customers satisfied service. We will try our best to make you satisfied.