Anyone made a PVC pipe / coax QFH antenna? : r/RTLSDR
FEDI-EA - Antena QFH - DIGICLUB, Boletín Informativo de Comunicaciones Digitales
Aeronetworks sro - Airborne Linux: Parasitic Quadrifilar Helical Antenna
Measured Radiation pattern characteristics of the QFH antenna in 12... | Download Scientific Diagram
Quadrifilar helicoidal antenna - Picture of Vaisala's GPS version
QFH Antenna Build Prologue – TF1EZ
1.6 GHz ebay QFH antenna "kit". ideas to make it easier to be successful.
Quadrifilar helicoidal antenna - Fotos de la versión de ON7EQ
Quadrifilar helicoidal antenna - Javascript on-line calculator
NOAA Satellite Signals With a PVC QFH Antenna and Laptop : 9 Steps (with Pictures) - Instructables
QFH Antenna and my first reception of NOAA! | Lets Hack It
Quadrifilar helicoidal antenna - Javascript on-line calculator
Building a QFH-Antenna and How I Did It : 7 Steps (with Pictures) - Instructables
weather satellite ground station
Sam on Twitter: "Built a wider and more precise L-Band QFH this afternoon. Hopefully it's tuned closer to 1.54 GHz than the last attempt. https://t.co/dtH8wdV0JL" / Twitter
WX Satellite Img Downlink Project
Quadrifilar helicoidal antenna - On-line mechanical template generator
Quadrifilar helicoidal antenna - Javascript on-line calculator
Building a QFH-Antenna and How I Did It : 7 Steps (with Pictures) - Instructables
GitHub - ODZ-UJF-AV-CR/QFH-Antenna: Quadrifilar Helix Antenna for 868 and 433 MHz ISM bands. Mainly used for balloon telemetry.
QFH-Quadrifilar Helix Antenna Basics,QFH Antenna calculator
Quadrifilar helicoidal antenna - Javascript on-line calculator
Sam on Twitter: "@luciangasparini @cql1983 @BH1WZB These measurements are similar to the most recent QFH I've built (https://t.co/tRbM4Ksbtu). It's worth experimenting with different loop sizes! I've also updated the @oshpark project page
