Active antenna work from 50 kHz to 45 Mhz with gain 16 dbi.
Fully balanced tecnology can stop receiving interference via coaxial cable and receiver body . Forget about ferrite rings on coaxial cable!
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. For guys, who understand.
Active antenna unit ( fully assembled and tested PCB).
Power injector unit ( fully assembled and tested PCB).
You need for use ( NOT included! ):
2 antenna element 0.3 meter each ( you can increace lenght for better sensivity).
Coaxial cable with SMA connector ( between antenna and injector).
Coaxial cable with SMA connector ( between receiver and injector).
Power cable ( ex. JST type or other with step 2.54 mm).
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