- 137 MHz QHF Quadrifilar APT Antenna
- This version of the 135MHz quadrifilar antenna for APT reception is an adaptation from Bill Sykes and Bob Cobey's article Taming the QFH which appeared in the March 1997 RIG magazine.
[ Hits: 6281 | Votes: 31 | Rating: 5.2 ]
- 137MHz Quadrifilar Antenna
- This version of the 137MHz quadrifilar antenna for APT reception is an adaptation from Bill Sykes and Bob Cobey Taming the QFH which appeared in the March 1997 RIG magazine. This article contains detailed 3D pictures and models and detailed pictures.
[ Hits: 89 | Votes: 0 | Rating: 0 ]
- A quadrifilar helix weather satellite receiving antenna
- This article describes how to make a quadrifilar helix (QFH) antenna easily, from inexpensive materials: uPVC plumbing pipe and RG-58U co-axial cable.
[ Hits: 16151 | Votes: 10 | Rating: 7.41 ]
- Helix Antenna for 137 MHz
- A Quadrifilar Helix Antenna for 137 MHz By George Goodroe, KF4CPJ
[ Hits: 2054 | Votes: 6 | Rating: 4.5 ]
- How To Build a Quadrifilar Helix Antenna for Weather Satellites
- How to build a QFH (Quadrifilar Helix Antenna) to download images from weather satellites. A complete tutorial on assembling QFH antenna at home with simple and common tools
[ Hits: 101 | Votes: 0 | Rating: 0 ]
- Making a Quadri Filar Helix antenna
- A homemade Quadri filar Helix Antenna project with detailed pictures that can inspire and guide you on building your onw QFH antenna sor 137 MHz.
[ Hits: 69 | Votes: 0 | Rating: 0 ]
- Making a Quadri Filar Helix antenna
- Lot of pictures, drawings and schematics to build your own QFH Quadri Filar Helix antenna for 137 MHz satellite signals reception
[ Hits: 102 | Votes: 1 | Rating: 1 ]
- NOAA Satellite Reception with QFH Antenna
- How to receive NOAA weather satellite with a home made QFH Antenna. This project includes some easy and efficient notch filters to suppress noise from FM frequencies
[ Hits: 104 | Votes: 0 | Rating: 0 ]
- QFH antenna for NOAA Satellites
- NOAA Satellite Signals With a PVC QFH Antenna and Laptop, this website also link to a github where you can find files and supporting documentation for constructing a QFH Antenna
[ Hits: 185 | Votes: 2 | Rating: 7 ]
- QFH antenna for weather satellite band
- This article describes how to make a quadrifilar helix (QFH) antenna easily, from inexpensive materials: uPVC plumbing pipe and RG-58U co-axial cable
[ Hits: 4049 | Votes: 16 | Rating: 5.25 ]
- Quadrifilar Helical Antennas
- A page dedicated to the Quadrifilar Helical Antennas, with projects, pictures and antenna plans by OH2GVB
[ Hits: 810 | Votes: 4 | Rating: 1.25 ]
- Quadrifilar helicoidal antenna
- Design your own quadrifilar helix, the site even generates a drilling pattern in a PDF file. Several different construction methods are shown.
[ Hits: 5659 | Votes: 15 | Rating: 6.86 ]
- Quadrifilar helicoidal calculator
- Calculate design for a quadrifilar helicoidal antenna
[ Hits: 1924 | Votes: 8 | Rating: 6.75 ]
- Quadrifilar Helix antenna for 436 MHz
- This is an antenna that author just built. Was intend for receiving the AO-27 downlink (at 436.800 +/- doppler). It is built with right hand circular polarization, and the gain is supposed to be in the neighborhood of 3 DB.
[ Hits: 3532 | Votes: 2 | Rating: 4.5 ]
- Quadrifilar Helix Antennas
- The purpose of this page is to provide information and links about Quadrifilar Helix Antennas. It's the best antenna to use for APT satellite reception
[ Hits: 5411 | Votes: 5 | Rating: 4.6 ]
- Taming the Quadrifilar Helical Antenna
- The Quadrifilar Helical antenna provides circular polarization and complete hemispherical reception, which is precisely what is needed to receive the polar orbiting weather satellites, and as a 2 meter antenna it will receive horizontal, vertical and clockwise circular polarization.
[ Hits: 151 | Votes: 0 | Rating: 0 ]
- The Quadrifilar Helix Antenna
- Article about quadrifilar helix antennas, electrical and physical characteristics, difference between quadrifilar and conventional helix antenna
[ Hits: 2098 | Votes: 4 | Rating: 8 ]