folded dipole antenna si

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folded dipole antenna si

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Antennas : 2M
  • Squarooka Antenna - squared bazooka for 2 meters band - Sort of similar to the one of the 6m omni. Instead of using twin-lead, this design makes use of a more or less regular double bazooka antenna (coaxial dipole). Your attention shall be drawn to the available standart literature, such as Rothammel. In order to "compute" the dimension, Karl Rothammel mentioned that the total length of the dipole shall be 95% of the free-space wavelength. The short-circuit bridges (closing the folded dipole) are to be placed at a distance-fraction being equal to the velocity factor of the coax cable used, which will be 66% using RG-58 or RG174.
    [ Hits: 353 | Votes: 0 | Rating: 0 ]
Antennas : 40M : 40 meter Delta Loop Antennas
  • ZZ Wave Net - ZZ Wave Net is a 40 & 80 meter full wave loop designed to fit on a city lot. ZZ Antenna is a folded dipole bent into an inverted V loop
    [ Hits: 9893 | Votes: 11 | Rating: 6.55 ]
Antennas : 6M
  • Slot-Cube Antenna for 6 Meters - Slot cubes are folded skeleton slot antennas with widened, folded dipoles bent into a cube to reduce size. QST Article 12 2019
    [ Hits: 570 | Votes: 2 | Rating: 5.5 ]
Antennas : Antenna Calculators Antennas : CobWeb
  • CobWeb multiband folded dipole - The cobweb antenna it is basically a 5 band antenna comprising of 5 full half wave dipoles for each band - between 10 meters and 20 meters, the antenna is also resonant on 6M and can be modeled even for VHF frequencies.
    [ Hits: 8620 | Votes: 0 | Rating: 0 ]
Antennas : Dipole
  • T2FD, The Forgotten Antenna - The terminated tilted, folded dipole T2FD is a little known antenna that performs excellently. Compact in size compared to a half-wave dipole the T2FD provides signal gain, wide frequency coverage, and exceptionally low noise characteristics.
    [ Hits: 4884 | Votes: 3 | Rating: 8.33 ]
  • Folded Dipole - A trifilar folded dipole antenna for 80 meters band
    [ Hits: 1656 | Votes: 7 | Rating: 5.72 ]
  • The Folded Dipole - The Folded Dipole is not used much amongst Radio amateurs, probably due to the fact that this antenna uses twice as much wire as a single-wire dipole.
    [ Hits: 1397 | Votes: 1 | Rating: 10 ]
  • Folded dipole antennas: terminated vs un-terminated - As the name suggests, it is simply a dipole with the tips folded towards each other. In this case, a full-wave dipole. The span of a standard folded dipole is aprox 0,5 lambda. In this article the author investigate on differences between un-terminated vs terminated folded dipole antennas.
    [ Hits: 493 | Votes: 9 | Rating: 6.78 ]
Antennas : Folded Dipole
  • K7MEM - Folded Dipole Design - Design your own folded dipole antenna
    [ Hits: 5565 | Votes: 20 | Rating: 7.3 ]
  • Folded dipole antenna basics - Basic information on the folded dipole antenna
    [ Hits: 1630 | Votes: 2 | Rating: 4 ]
  • Twin Lead Dipole - A folded dipole using twin lead By W8HDU
    [ Hits: 1456 | Votes: 2 | Rating: 5.5 ]
  • Folded dipole antenna by N4SPP - A quarter size cobra dipole antenna, a multiband dipole antenna for 40 to 10 meters basedn on original cobra dipole design but with a limited space by N4SPP
    [ Hits: 2620 | Votes: 1 | Rating: 8 ]
Antennas : Lindenblad
  • The Lindenblad antenna - The ultimate satellite Omni Antenna by Howard Sodja, W6SHP. The Lindenblad antenna consists of four half wave folded dipoles slanted 30 degrees to the horizon, oriented 90 degrees to each other in azimuth, spaced 0.3 wavelength apart
    [ Hits: 3721 | Votes: 6 | Rating: 7.67 ]
Antennas : Morgain
  • Morgain 80-160 - A dual band antenna designed to work on low bands and in this article on 80 and 160 meters band. Total lenght of this folded dipole is 37,60 meters. Includes some details for fine tuning on 160 meters. Article in italia
    [ Hits: 2180 | Votes: 12 | Rating: 6.58 ]
Antennas : T2FD
  • Modeling the T2FD - Modeling the T2FD, tilted folded dipole antenna
    [ Hits: 582 | Votes: 2 | Rating: 8.5 ]
  • T2FD Antenna - Terminated and twisted folded dipole - T2FD is a 600-900 ohms folded dipole, terminated with resistor. Feed impedance is coupled with 50/600 ohms voltage balun. It is a wide band antenna with rather low SWR over the full designed frequency range: antenna tuner is seldom needed.
    [ Hits: 482 | Votes: 0 | Rating: 0 ]
Antennas : Vertical
  • The C-Pole Antenna - C-Poles for 20m and 6m, it is a folded half-wave dipole with an asymmetrical tapped 50-Ohm-point in the lower part of the antenna. Design hints by DK7ZB
    [ Hits: 932 | Votes: 47 | Rating: 8.3 ]
Manufacturers : Antennas : HF : Vertical Antennas
  • KVK Antenna Systems - The manufacturer of the NuBeam, Vipole, and the multi-band Quad-Folded-Dipole (or QFD for short) antenna. Also have a unique multiband vertical which can combine operation on multiple HF frequencies as well as provide high gain on 50, 144 and 438MHz in a single antenna.
    [ Hits: 3973 | Votes: 1 | Rating: 1 ]
Operating Aids : History
  • Notable Patents on Antenna Design - Patents of most popular antenna models including Zeppelin Antenna, Beverage Antenna , Franklin Antenna , Yagi-Uda Antenna , Sterba Antenna , Rhombic Antenna , Turnstile Antenna , Folded Dipole Antenna , Coaxial Antenna , Slot Antenna , Discone Antenna , Quad Antenna Element , Log Periodic Antenna , Swiss Quad Antenna
    [ Hits: 285 | Votes: 0 | Rating: 0 ]

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