Also reduceing synphase interference over 60 db help ignore local home interference. Now i can connect my Degen 1103 to laptop via linear input for receiving and decoding digital transmission. Individual tuning and checked - pair input tranzistor BF862 individually sorted. Antenna input have 3 stage protection from electrostatic discharge. Power input have 2 stage protection from change polarity power and overvoltage (each one in antenna, second in power injector).
Low noise stabilise power injector can use with swithing power adapter (but linear adapter better). External power voltage from 5 to 15 volt, current 0.1 ampere. It is not simple and not cheap, but it is right antenna. Active antenna unit in plastic case.
2 antenna element 0.3 meter each (you can increace lenght for better sensivity). Power injector unit in metall case. Coaxial cable 5 meter with SMA connector (between antenna and injector). Coaxial cable 0.3 meter with SMA connector (between receiver and injector). Power cable 0.1 meter.The item "Active dipole mini whip antenna VLF, LW, SW for RTL SDR, Degen, Tecsun, Sony" is in sale since Tuesday, August 14, 2018. This item is in the category "Consumer Electronics\Radio Communication\Antennas\Ham, Amateur Radio Antennas". The seller is "rcslon" and is located in Moscow. This item can be shipped worldwide.