QFH 137MHz Antenna
Description
This Is A Quadrifilar Helicoidal Antenna Structure Serving As A Base For Building A 137Mhz Noaa Satellite Reception Antenna. Computations Were Done Using Mr. John Coppens Qfh Antenna Online Calculator (Thank You Very Much!) : Http://Www.Jcoppens.Com/Ant/Qfh/Calc.En.Php Edit 2015-04-11 : - Added A Picture Received Today With The Antenna (No Amplifier, Only The Antenna Connected To The Sdr Rtl2832U Dongle :-) )
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