7 mhz quadrifilar

7 mhz quadrifilar

Antennas : 70cm

• Quadrifilar Helix antenna for 436 MHz
  
  This is an antenna that author just built Was intend for receiving the AO 27 ...
  [ Hits: 3898 | Votes: 4 | Rating: 4.5 ]

• 137 MHz QHF Quadrifilar APT Antenna
  
  This version of the 135MHz quadrifilar antenna for APT reception is an adaptation from Bill ...
  [ Hits: 6764 | Votes: 34 | Rating: 4.95 ]
• Helix Antenna for 137 MHz
  
  A Quadrifilar Helix Antenna for 137 MHz By George Goodroe, KF4CPJ
  [ Hits: 2174 | Votes: 6 | Rating: 4.5 ]
• 137MHz Quadrifilar Antenna - Borre Ludvigsen
  
  This version of the 137MHz quadrifilar antenna for APT reception is an adaptation from Bill ...
  [ Hits: 233 | Votes: 3 | Rating: 7 ]