70 MHz Antenna Projects

Amateur radio antenna designs for 70 MHz band

70 MHz antennas are specifically designed for amateur radio operators to operate on the 4 meters band. These antennas provide efficient transmission and reception capabilities for hams, allowing them to communicate effectively over this frequency range. With various designs and plans available, hams can choose or build antennas that best suit their needs for reliable and clear communication in the amateur radio community.
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  • G4CQM Homebrew VHF Yagi antennas
    Homebrew VHF Yagi 50MHz 144MHz 432MHz 1296MHz 2320MHz 6M 2M 70CM 23CM 13CM Yagis
  • Vertical half-wave aerials for 4m
    This project details three variants of a vertical half-wave antenna design for the 4-meter (70MHz) amateur radio band. The antennas use end-feeding with a parallel-tuned circuit for impedance matching to 50-ohm coaxial cable. The first variant uses suspended flexible wire for portable use, the second employs a fiberglass rod with internal wire for permanent outdoor installation, and the third utilizes aluminum tent poles for quick mobile deployment. Despite the narrow bandwidth of the matching circuit, this suits the narrow 4m FM allocation well. The design offers an effective omnidirectional radiation pattern and can be constructed with readily available materials.
  • 70 MHz Moxon antenna
    This article describes the construction of a Moxon rectangle antenna for the 70MHz (4-meter) amateur radio band. This compact two-element beam design features folded element ends, reducing its width to approximately 75% of a half-wavelength. The antenna was built using enamelled copper wire stretched over a lightweight fiberglass kite spar frame, with a direct coaxial cable feed connection. Initial testing showed a VSWR of around 1.3 with distinct nulls at 90 degrees when horizontally mounted. The author later tested vertical polarization and suggested that the antenna's compact size might allow for indoor loft installation.
  • A centre-fed co-axial dipole for 4m
    Easy to setup dipole antenna for 4 meters band by Tony Hawker G4CJZ
  • Halo antenna for 70Mhz
    Halo antenna for 4 meters band with dimensions, pictures and assembling instructions
  • 70MHz-Yagis
    Various Yagi antennas for 70 Mhz band
  • DK7ZB hentenna
    Descriptions for 144-MHz- , 70 MHz- and 50-MHz-Reflector-Hentennas
  • 70 MHz Antenna
    OZ1BXM 70 MHz horizontal dipole antenna
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