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Building a quadrifilar helix antenna (QFH) for NOAA satellite reception with an RTL Quadrifilar Helix Antenna 137 Mhz

Last updated: Sunday, December 28, 2025

Building a quadrifilar helix antenna (QFH) for NOAA satellite reception with an RTL Quadrifilar Helix Antenna 137 Mhz
Building a quadrifilar helix antenna (QFH) for NOAA satellite reception with an RTL Quadrifilar Helix Antenna 137 Mhz

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