Radio Antennas

Radio Antennas

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• Feeder Radiation - Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes
  [ Hits: 1830 | Votes: 4 | Rating: 8 ]

• Folded dipole antenna basics - Basic information on the folded dipole antenna
  [ Hits: 1633 | Votes: 2 | Rating: 4 ]

• Mobile 2 meter halo antenna - This HALO design is not ground dependent and can be mounted atop a section of PVC.
  [ Hits: 1912 | Votes: 0 | Rating: 0 ]

• Some plain facts about multiband vertical antennas - There is considerable confusion as to what exactly a multiband vertical antenna is. The confusion concerns the method of feed, how much mismatch one can expect, how many radials are required, how the particular antenna is built for multiband use, plus some other points.
  [ Hits: 1910 | Votes: 1 | Rating: 7 ]

• VHF/UHF Quad Antenna - Article by N6JSX on homebrewing quad antennas for VHF and UHF.
  [ Hits: 4741 | Votes: 4 | Rating: 5.25 ]

• Weatherproof Vertical Antennas - Slim Jim - How to make a Weatherproof Vertically Polarised Omnidirectional Aerial, The Slim Jim Antenna
  [ Hits: 5480 | Votes: 4 | Rating: 5.75 ]

• Petlowany Antennas by K6NO - WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiral-shaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length
  [ Hits: 3765 | Votes: 9 | Rating: 6.22 ]

• Importance of noise reduction in wires antennas - An old post by John Doty about effects of noise in longwire antenna.
  [ Hits: 1664 | Votes: 0 | Rating: 0 ]
• Why Are Antennas Built to Look Like They Do? - Basic anctenna theory, general information on antennas
  [ Hits: 421 | Votes: 0 | Rating: 0 ]

• Ham Radio Tower at N0HR - Ham Radio Tower Project at N0HR. Includes site plan, escavation, tower construction, HF antennas, grounding and lightning protection, coax and more.
  [ Hits: 2962 | Votes: 2 | Rating: 8 ]

• Phased vertical antennas - Phased vertical antenna system in french
  [ Hits: 1977 | Votes: 1 | Rating: 10 ]

• PA5MW Ham Radio Blog - Ham radio Blog, focusing on homebrewing and testing antennas, rig mods and contesting.
  [ Hits: 710 | Votes: 4 | Rating: 9.75 ]

• QRPproject - QRP and Homebrew HAM Radio by DL2FI and DL7NIK QRP Made in Germany and more QRP Kits, qrp transceivers, accessories, mini keyers dealer for antennas, atu and more accessories
  [ Hits: 10708 | Votes: 11 | Rating: 6.64 ]

• Radiosonde : how to listen to them - Frequencies and location of every meteo radiosonde launching centres in Europe. Equipments, antennas, history, SondeMonitor and BalloonTrack tutorials
  [ Hits: 748 | Votes: 3 | Rating: 6.67 ]

• Understanding Amateur Radio NVIS - Understanding Amateur Radio NVIS Antennas and Propagation, derived from The ARRL Antenna Book and QST Articles
  [ Hits: 941 | Votes: 1 | Rating: 9 ]

• RadioWare - Products and books for the radio hobbist. Antennas, Coax cables, filters,Lightning Protection, Wire & Cable, Books
  [ Hits: 782 | Votes: 1 | Rating: 1 ]

• Radiotx.com - Radios, Antennas & More dealer from Texas USA
  [ Hits: 834 | Votes: 0 | Rating: 0 ]

• Memphis Amateur Electronics - Carry hundreds of ham radio products including amateur radios from Alinco, Icom, Kenwood, and Yaesu, plus ham radio products from MFJ, LDG, Diamond Antennas, Hustler, Ameritron, Astron power supplies, and books of all kinds
  [ Hits: 2132 | Votes: 4 | Rating: 5.5 ]

• Malux - El-Tele-Data - Accessories, Antennas and Battery chargers. Radiators, Repeaters, Yagi, Mag, Car, Tetra, Marine, Multiband, Brackets, Mounting accessories, cables and connectors, radiokits, special cables etc. Based in Finland
  [ Hits: 782 | Votes: 1 | Rating: 8 ]

• DF9CY Technical Articles and Material - A collection of technical articles on antennas, radios and other stuff.
  [ Hits: 894 | Votes: 1 | Rating: 8 ]

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