coax dipole

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coax dipole

51 links

Antennas : 2M
  • VHF Coax Dipole - A simple coax dipole antenna for 144 MHz by 9A7PJT
    [ Hits: 1283 | Votes: 2 | Rating: 2 ]
  • A simple 2 meter antenna - A simple center-fed dipole made just with a thin-wall PVC pipe, aluminum tape, and RG-8X coax
    [ Hits: 1497 | Votes: 2 | Rating: 5.5 ]
  • 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 : 30M
  • 30m vertical dipole - The 30 Meter Vertical Dipole is constructed from #10 stranded insulated wire available in most hardware stores. The feedpoint uses a T-section of PVC pipe. The coax loops through the PVC pipe to provide strain relief. by W1TR
    [ Hits: 2049 | Votes: 2 | Rating: 4.5 ]
Antennas : 4M
  • A Coax dipole for 4 m - This center-fed coaxial dipole for 4 mters feature low-cost components, Easy to set-up - nothing to adjust and no metalwork required, with only four soldered joints
    [ Hits: 551 | Votes: 1 | Rating: 10 ]
Antennas : 6M
  • 50 MHz Coax Dipole - SOTA 6m 52 MHz Coaxial Dipole Antenna based on the vertical coaxial dipole named the Flowerpot Antenna
    [ Hits: 1369 | Votes: 6 | Rating: 9.5 ]
Antennas : Baluns
  • Build your own HF balun - A balun is a MUST for dipoles or similar antennas when they are feed with coaxial cables. Many hams connect the center conductor of the coaxial cable to one side of the dipole, and the shield to the other. Wrong!
    [ Hits: 1639 | Votes: 5 | Rating: 5 ]
  • Antenna Theory : Baluns - This article describe the principles of baluns when referred to devices used to balance unbalanced systems, like a coax cable and a dipole antenna
    [ Hits: 706 | Votes: 2 | Rating: 9 ]
  • When and Where to Use Baluns - Baluns are usually used by Hams to feed dipole antennas with 50 ohm coax and to transpose from ladder line feeding a multi-band antenna to the unbalanced input of an antenna tuner.
    [ Hits: 1518 | Votes: 9 | Rating: 7 ]
Antennas : Bazooka
  • Coax Bazooka type antenna - 2 metre and 70 cm Coaxial Dipoles, Double Bazooka type
    [ Hits: 3198 | Votes: 3 | Rating: 7 ]
  • KC0KJF Doble Bazooka - The Double Bazooka Dipole is a very efficient single band antenna which is very quite,and does not require the use of a balun. This antenna consists of coax (RG58) with the shield split at the center and the feedline attached to the open ends.
    [ Hits: 986 | Votes: 2 | Rating: 3 ]
Antennas : Dipole
  • DF1PU Coax Trap Antenna - A multiband coax trapped dipole for 10-80 meters bands by DF1PU
    [ Hits: 943 | Votes: 1 | Rating: 3 ]
  • The Sloping Vertical Dipole - The radiating part is the vertical half of the dipole. You get nearly radiation in all directions, the second half must not be in 180°. The table below show how we get an impedance for direct feeding of 50Ohm coax. by DK7ZB
    [ Hits: 537 | Votes: 0 | Rating: 0 ]
  • 50 Ohm Coaxial Dipole - This dipole is composed by a coaxial structure and non-folded dipole made from two open conductive cylinders, and benefits from the stub compensation of a folded dipole by passing an insulated wire through the axis and connecting it to the ends of both limbs. By G4CQM
    [ Hits: 618 | Votes: 1 | Rating: 3 ]
  • QRO No-Tuner Multiband Dipole - Construction details of a multiband dipole that can can operate at high power levels, and match its 50-ohm coax feedline without a tuner
    [ Hits: 1502 | Votes: 2 | Rating: 4.5 ]
Antennas : Loop
  • Horizontal Loop Antenna Experiments - The HF horizontal loop has been around for many years now. This article includes a YouTube video and discusses the reasons for looking at this antenna, its design, and its installation. There are some on-air comparisons against three regular double bazooka (coax) dipoles and the Par SWL End-Fed antenna.
    [ Hits: 926 | Votes: 5 | Rating: 8 ]
Antennas : Traps Antennas : VHF UHF
  • 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: 2922 | Votes: 15 | Rating: 5.55 ]
Antennas : Windom
  • The Coax-Fed Windom - Classical coax-fed, off-center-fed dipole, feeded with a 4:1 Guanella balun
    [ Hits: 1214 | Votes: 2 | Rating: 8.5 ]
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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