Making a Quadri Filar Helix antenna - Resource Detail - The DXZone.com
Just built myself a 137 MHz QFH antenna. : r/RTLSDR
Quadrifilar Helix
OH2GVB Quadrifilar Helical Antennas
Satellites reception
QHF Quadrifilar APT Antenna
QFH Antenna and my first reception of NOAA! | Lets Hack It
SAT
How To Build A QFH (Quadrifilar Helix Antenna) to Download Images From Weather Satellites
Just built myself a 137 MHz QFH antenna. : r/RTLSDR
Making a Quadri Filar Helix antenna - Resource Detail - The DXZone.com
F4BPP Homepage
Parasitic Quadrifilar Helical Antenna
Quadrifilar Helix
KE-137 QFH Antenna NOAA, ACARS 135/137 MHz
Equipment
QHF Quadrifilar APT Antenna
HAM RADIO | Homebrew QFH antenna with APT-format transmission from NOAA 18 satellite, 518 miles up, and over New England | Facebook
Timestep Weather Satellite Systems
Quadrifilar Helix Antenna (137 MHz) for NOAA Weather Satellites
F4BPP Homepage
Quadrifilar helicoidal antenna - Copper pipe version of the QFH
Ing. Miroslav Gola - EMGO
How to Build the World's Lightest Quadrifilar Helix Antenna – LVL1 – Louisville's Hackerspace
QHF Quadrifilar APT Antenna
The Antenna - wx
