balun

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balun

227 links - and 4 categories

Antennas : Baluns
  • 9:1 Magnetic Longwire Unun - A magnetic longwire unun with a T130-2 Iron Powder core by M0UKD
    [ Hits: 1424 | Votes: 7 | Rating: 7.29 ]
  • 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 ]
  • Balun designs - An introduction to Baluns, what they do and how to design efficinent baluns
    [ Hits: 749 | Votes: 1 | Rating: 10 ]
  • 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 ]
  • Antenna Balun - What is an antenna balun, why and when do you need it, type of transformers, impact on SWR and feed line efficiency.
    [ Hits: 1328 | Votes: 1 | Rating: 8 ]
Antennas : Baluns : 1 to 1 Balun
  • Double Guanella Balun - Hi-res pictures of a double 4:1 guanella balun by PA1HR
    [ Hits: 908 | Votes: 4 | Rating: 6.25 ]
  • Ferrite Balun for HF - Diagram and sample ferrite balaun for 1.8-30 MHz
    [ Hits: 2071 | Votes: 7 | Rating: 9.14 ]
Antennas : Baluns : 4 to 1 balun
  • High Power 4:1 Balun - High power 4:1 air core balun for multi band fan dipole antenna
    [ Hits: 1610 | Votes: 4 | Rating: 2.75 ]
  • Guanella Current 4:1 Balun - A large picture with construction details of a homebrew guanella current balun 4:1
    [ Hits: 1769 | Votes: 14 | Rating: 6.79 ]
Antennas : Dipole Antennas : End-Fed
  • W3EDP Antenna - W3EDP antenna for 16 - 160 Meters, works by attaching the antenna to a balun and use coax to connect the antenna to the tuner.
    [ Hits: 2144 | Votes: 2 | Rating: 10 ]
Antennas : End-Fed : End Fed Half Wave Antenna
  • End Fed Half Wave Antenna Coupler - Centre fed half wave dipoles make great, simple and effective antennas for the HF bands. Sometimes however, the centre feed is not ideal. This great project will improve the overall antenna performance.
    [ Hits: 1426 | Votes: 1 | Rating: 10 ]
Antennas : OCF
  • OCF Dipole - This is a popular antenna design as the performance is very good across the HF bands and requires little or no tuning. It is a dipole fed off center with a 4:1 current balun at the offset feedpoint. The antenna shown covers 80, 40, 20 and 10 meters with 15 meters and WARC bands
    [ Hits: 2558 | Votes: 7 | Rating: 9.43 ]
Antennas : Theory
  • Quarter Waves and Velocity Factor - Coax Velocity Factor in Baluns, Does it Matter? Test results show coaxial cable velocity factor does not always enter into stub length calculations especially in the world of Baluns
    [ Hits: 208 | Votes: 0 | Rating: 0 ]
Antennas : Tuners
  • A Homebrew Z-Match Transmatch - A home made antenna tuner based on the W6JJZ basic concept that ,atches balanced loads without the use of lossy baluns, can provide band-pass filtering and harmonic attenuation.
    [ Hits: 1099 | Votes: 0 | Rating: 0 ]
Antennas : W3EDP
  • W3EDP Antenna Notes - Hints for building a W3EDP-Antenna, includes the construction of the 1:4-balun by DK7ZB
    [ Hits: 931 | Votes: 3 | Rating: 9.33 ]
Manufacturers : Baluns
  • ON7FU Ferrite Applications - Professional constructed BALUNs,UNUNs and Line Isolators for Amateur Radio.
    [ Hits: 328 | Votes: 2 | Rating: 7 ]
Shopping and Services : Regional : Europe : UK
  • G Whip Antenna Products - British ham radio antenna products manufacturer, base and portable antennas, mobile antennas, baluns, masts, production is mostly based on wire and whip antennas
    [ Hits: 400 | Votes: 0 | Rating: 0 ]
Technical Reference : Radio Frequency Interference
  • The myth of SWR causing coax radiation - There are several reasons that can cause coax line radiation, most of them are related to wrong or missing use of a balun, but none can be imputed to load mismatch.
    [ Hits: 752 | Votes: 2 | Rating: 6 ]

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