440 antenna

440 antenna

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Antennas : 70cm

• 440 Mhz J-Pole Antenna plans - Here is a 70cm (440 Mhz) J-Pole antenna that is inexpensive, and easy to build. Author use 1/2 inch copper pipe, and the associated fittings necessary. The dimensions aren't typical however, this is what it took to get its SWR low.
  [ Hits: 20944 | Votes: 51 | Rating: 4.8 ]
• Handitenna 440 Beam Antenna - A homemade 70cm handitenna made with a PVC pipe
  [ Hits: 858 | Votes: 0 | Rating: 0 ]
• 7 Element 440Mhz Yagi - An home made UHF 7 elements Yagi antenna project
  [ Hits: 1106 | Votes: 7 | Rating: 8.57 ]
• UHF Dual Rectangle Antenna - The antenna described here is a direct-connect dual-rectangle beam for use on 70 cm between 440 and 450 MHz
  [ Hits: 957 | Votes: 3 | Rating: 6 ]

• The Cobweb HF Antenna - The G3TPW Cobwebb antenna covers five bands, 14 - 28 mhz, including the WARC bands
  [ Hits: 6030 | Votes: 4 | Rating: 6.25 ]

• VHF UHF Fan Dipole Antenna - Author describes in this post a unique copper pipe fan dipole that he created and that provides fantastic results
  [ Hits: 1500 | Votes: 8 | Rating: 7.38 ]

• The simple 144/440 copper pipe J - A simple dual band VHF UHF jpole antenna Projects by Dale Kubichek
  [ Hits: 8389 | Votes: 18 | Rating: 8 ]
• Open Stub J-Pole Project - A 144/440 dual band open stub J-Pole Antenna project by NT1K
  [ Hits: 1947 | Votes: 6 | Rating: 4.33 ]
• Tri-Band J-Pole - This strange looking antenna is a combination of Coupled-Resonator principle by K9AY and a quarter stubs to achieve low angle radiation pattern. Designed with 4nec2 NEC based antenna modeler and optimizer for 145/220/440MHz bands
  [ Hits: 1922 | Votes: 5 | Rating: 9 ]
• 3 band J-Pole Antenna - Pictures of a 2 meter, 220, 440 copper J-Pole antennas
  [ Hits: 2611 | Votes: 12 | Rating: 6.08 ]
• Homemade 2M/440 J-Pole Antenna - A 2m 70cm Dual Band J-Pole antenna for 35 USD. An excellent performing J-Pole type antenna, constructed from readily available materials.
  [ Hits: 1049 | Votes: 5 | Rating: 3.4 ]

• Handi-tenna 440 Beam Antenna - A 4 elements handitenna for 70 cm band. This is my version of the K5OE Handitenna. This one is a four Element instead of three, as I had less of a crunch on space than he did. The 1st three elements (Reflector, Driven Element, and Director 1) are the same dimensions as his were.
  [ Hits: 1441 | Votes: 4 | Rating: 6 ]

• BiQuad Antenna for 144/440 - This is a vertically polarized Broadside and Collinear Array each Loop is a vertically polarized Broadside Array both the right and the left side of the Loop is a bent 1/2 wave dipole working 180 degrees out of phase with the other one and that gives you 4.15dbi of gain by KE4UYP
  [ Hits: 7600 | Votes: 14 | Rating: 4.86 ]

• Copper Cactus Single Coax Feed - Single Coax Feed to Multi-Band Copper Cactus Antenna.
  [ Hits: 1325 | Votes: 1 | Rating: 10 ]
• Ground plane for 144, 222 and 440 MHz - Here we have a ground plane antenna mostly used for 144, 222, 440 Mhz. Its one of the simplest antennas to make. New hams can build this with little to no experience in antenna building.
  [ Hits: 1263 | Votes: 10 | Rating: 5.7 ]
• VHF UHF Coaxial Dipole Antenna - A base station antenna you can easily build for 146,220 or 440 MHz, with performance similar to a J-pole but smaller and less obstrusive
  [ Hits: 2931 | Votes: 15 | Rating: 5.55 ]
• DIY Dual Band 144-440 MHz vertical antenna - A homemade VHF/UHF vertical antenna made essentially with RG58 coax cable, with a 9 turns choke balun to prevent the shield acting as a RF Radiator.
  [ Hits: 1377 | Votes: 14 | Rating: 5.5 ]

• KB9VBR J-Pole Antennas - All copper J-Pole antennas for sale. 6 meter, 2 meter, 222 MHz, 440 MHz, LPFM, Marine, GMRS. Includes a construction plan in pdf format if you wish to build your own antenna.
  [ Hits: 6445 | Votes: 8 | Rating: 6.25 ]

• The Ventenna - Rugged, disguised 2m, 220MHz, 440MHz, and 2m/440 dual band antennas, HF portable antennas, portable dipoles.
  [ Hits: 4581 | Votes: 19 | Rating: 8.21 ]