137MHz QFH Antenna
NOAA Satellite Signals With a PVC QFH Antenna and Laptop : 9 Steps (with Pictures) - Instructables
QFH-Quadrifilar Helix Antenna Basics,QFH Antenna calculator
Building a Quadrifilar Helix Antenna for Undergraduate Researchers
Inexpensive) NOAA APT Ground Station Utilizing the RTL-SDR and 3D Printing. : 5 Steps (with Pictures) - Instructables
Quadrifilar helicoidal antenna - On-line mechanical template generator
QFH Antenna and my first reception of NOAA! | by Lucas Teske | Medium
Anyone made a PVC pipe / coax QFH antenna? : r/RTLSDR
PDF) Design of a Dual-Band Quadrifilar Helix Antenna
QFH Antenna and my first reception of NOAA! | Lets Hack It
Quadrifilar helicoidal antenna - Picture of Vaisala's GPS version
Quadrifilar helicoidal antenna - Copper pipe version of the QFH
BE Satcom on Twitter: "@v1rtu0s1ty This design is a crossed dipole type, a QFH antenna is quite different. Calculator for QFH type ant's: https://t.co/f8sS6yr4u8" / Twitter
HAM RADIO | Homebrew QFH antenna with APT-format transmission from NOAA 18 satellite, 518 miles up, and over New England | Facebook
10/2021 OCTOBER
Quadrifilar helicoidal antenna - Javascript on-line calculator
F4BPP Homepage
F4BPP Homepage
How To Build A QFH (Quadrifilar Helix Antenna) to Download Images From Weather Satellites
Help Getting the Right Dimensions for QFH Antenna : r/RTLSDR
Antena QHA para satélites polares. (30STV)
GitHub - errikosmes/SDR-Projects
