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April 1st 20, 09:21 AM
posted to rec.radio.amateur.equipment,rec.radio.info
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[DXZone] 137MHz Quadrifilar Antenna
The DXZone.com Amateur Radio Internet Guide /////////////////////////////////////////// 137MHz Quadrifilar Antenna Posted: https://www.dxzone.com/dx33857/137mh...r-antenna.html Antennas/Quadrifilar Helix This version of the 137MHz quadrifilar antenna for APT reception is an adaptation from Bill Sykes and Bob Cobey Taming the QFH which appeared in the March 1997 RIG magazine. This article contains detailed 3D pictures and models and detailed pictures. |
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