bi antennas

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bi antennas

200 links - and 5 categories

Antennas : 20M : 20 meter Dipole Antennas
  • 20 meters rigid dipole - Rigid Dipole antennas for 14 MHz band using PVC and Aluminium tubing
    [ Hits: 7008 | Votes: 14 | Rating: 6.57 ]
Antennas : 40M : 40 meter Vertical Antennas Antennas : Collinear
  • Design your Own Super J Pole - Javascript for calculating the lengths of tubing to be used for the construction of a Super J-Pole in a collinear design
    [ Hits: 18228 | Votes: 36 | Rating: 6.71 ]
Antennas : Feed Lines
  • HF Antenna Switch - The purpose of this remote antenna switch was to be able to select between four different antenna combinations The unit was designed to work at RF power levels of around 100 watts by G8JNJ
    [ Hits: 954 | Votes: 0 | Rating: 0 ]
  • 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: 1826 | Votes: 4 | Rating: 8 ]
Antennas : Four Square
  • Receive 4 square antenna - N6RK receive 4 square antenna with transformer coupled antennas and true hibrid combiner
    [ Hits: 1678 | Votes: 1 | Rating: 7 ]
Antennas : Halo
  • Mobile 2 meter halo antenna - This HALO design is not ground dependent and can be mounted atop a section of PVC.
    [ Hits: 1911 | Votes: 0 | Rating: 0 ]
Antennas : Loop
  • Loop Antennas and Calculator - KA1FSB loop calculator give you a quick overview of the feasibility of "squeezing" a loop into your available yard or apartment space. The easy calculator yields a reasonable approximation of dimensions, to within 5% over the amateur bands, using typical wire gauges ranging from 12-18 AWG.
    [ Hits: 16096 | Votes: 60 | Rating: 6.52 ]
Antennas : Satellite Antennas : Spiral
  • 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 ]
Antennas : Theory
  • Understanding Antennas For The Non-Technical Ham - A Book By Jim Abercrombie, N4JA. Reason for writing this book is to educate you so you can make an informed choice concerning the best antenna for you. Another reason is to dispel the many antenna myths that circulate in the amateur communit
    [ Hits: 1543 | Votes: 3 | Rating: 6.67 ]
  • The humble Yagi or should that be Uda - Article about Yagi-UDA antennas
    [ Hits: 347 | Votes: 1 | Rating: 9 ]
Antennas : Vertical Antennas : WiFi
  • Do-It-Yourself Wireless Antennas - Your guide to wireless antennas, how to build a wireless antenna without spending much money The Pringles Cantenna, Coffee Can Antenna, Parabolic Reflector and Antenna Designs. Combine a homemade Tripod Mount with an inexpensive Pistol Grip and go Wardriving.
    [ Hits: 10995 | Votes: 10 | Rating: 6.3 ]
Internet and Radio : Forums
  • Topband Homebrew Helical - Sharing information on Topband Homebrew Antennas, Base & Mobile
    [ Hits: 2263 | Votes: 3 | Rating: 8.67 ]
Manufacturers : Antennas : HF
  • Big Hair's Antennas - High Performance, HF, CB, base and mobile antennas
    [ Hits: 809 | Votes: 1 | Rating: 10 ]
  • Outbacker antennas - Outbacker mobile and portable antenna systems are slim line, highly efficient, single whip multi bond antennas for vehicular and limited space portable applications.
    [ Hits: 2230 | Votes: 0 | Rating: 0 ]
Operating Modes : WiFi : Long Range WiFi
  • Long Range Wi-Fi - Long range Wi-Fi antennas you can build. Helicals, parabolics, and biquads discussed. How to add external antennas to WUSB54GC and F5D7050 usb wireless adapters for long range connections.
    [ Hits: 11005 | Votes: 10 | Rating: 6.3 ]
Shopping and Services : Accessories
  • RadioWare - Products and books for the radio hobbist. Antennas, Coax cables, filters,Lightning Protection, Wire & Cable, Books
    [ Hits: 782 | Votes: 1 | Rating: 1 ]
Shopping and Services : Regional : USA
  • Used Radio Sales - Sell used low band, mid band and hi band vhf radios and mobile antennas. Used Radio Sales can program these radios to suit your needs.
    [ Hits: 595 | Votes: 0 | Rating: 0 ]

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