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Just built myself a 137 MHz QFH antenna. : r/RTLSDR
weather satellite ground station
Parasitic Quadrifilar Helical Antenna
Weather satellite
Timestep Weather Satellite Systems
QHF Quadrifilar APT Antenna
F4BPP Homepage
SAT
How To Build a Quadrifilar Helix Antenna for Weather Satellites - Resource Detail - The DXZone.com
QHF Quadrifilar APT Antenna
Weather satellite
Equipment
Quadrifilar helicoidal antenna - Copper pipe version of the QFH
QHF Quadrifilar APT Antenna
Making a Quadri Filar Helix antenna - Resource Detail - The DXZone.com
An easy 3D printed quadrifilar helix antenna - Gallery - Libre Space Community
My first try at receiving NOAA/Meteor at 137MHz. I am using a Nooelec NESDR SMArt v4 with a QFH antenna + Broadband LNA + SDR# using 26 meters (85 feet) of RG59
Antena QHA para satélites polares. (30STV)
HAM RADIO | Homebrew QFH antenna with APT-format transmission from NOAA 18 satellite, 518 miles up, and over New England | Facebook
OH2GVB Quadrifilar Helical Antennas
Connection diagram for the QFH antenna in 2023 | Ham radio antenna, Antenna, Weather satellite
