4 1 coax balun13 links
- Magnetic Long Wire UnUn 9:1
- An impedance transformer (9:1) to feed a high impedance long wire (~450 ohm), down to a 50 ohm unbalanced coaxial input.
[ Hits: 1776 | Votes: 3 | Rating: 6.33 ]
- 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: 1427 | Votes: 2 | Rating: 9.5 ]
- 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: 1090 | Votes: 8 | Rating: 7.75 ]
- A 1:1 Coaxial Balun
- PDF article about a coaxial 1:1 balun, original concept by I4BBE using a quarter-wavelength and the three-quarter-wave adapting sections with the 50-Ohm coaxial cable by I0QM
[ Hits: 43671 | Votes: 24 | Rating: 7.98 ]
- Simple HF Baluns for 50/75 ohm coax
- Show diagrams, winding methods and tables of some 1:1 and 4:1 baluns for 1.8 - 30 MHz suitable for use up to 200W (400W peak) on systems using 50 or 75 ohm coaxial cable input where SWR should not exceed 1.6:1.
[ Hits: 14085 | Votes: 22 | Rating: 4.04 ]
- Sorbie Balun and Bottle Choke
- Homebrew a 1:1 balun consistsing of 4+4 turns of mini coaxial cable over a large ferrite core by m0pzt
[ Hits: 604 | Votes: 1 | Rating: 1 ]
- How to build a Coax Balun 1:4 and 1:1
- An air-wound balun made with coaxial cable can not become saturated because no powder iron or ferrite core is present. In this article author explains and compare coax baluns to ferrite baluns with comparison tables and detailed pictures
[ Hits: 255 | Votes: 5 | Rating: 9.4 ]
- The Guanella 1:4 balun
- A cost effective current-mode 1:4 balun can be constructed from two lengths of coax, two ferrite rods, some electrical tape, cable ties, a length of PVC water-pipe and some connectors. This form of 1:4 current-mode balun is named after G. Guanella.
[ Hits: 3497 | Votes: 1 | Rating: 10 ]
- 4:1 coax balun design
- Online calculator for a 4 to 1 coax cable balun
[ Hits: 6518 | Votes: 23 | Rating: 5.3 ]
- DIY Dual Band 144-440 MHz vertical antenna
- A homemade VHF/UHF vertical antenna made essentially with RG58 coax cable, with a 9 turns choke balun to prevent the shield acting as a RF Radiator.
[ Hits: 436 | Votes: 0 | Rating: 0 ]
- Windom Antenna with 4:1 balun
- The Windom is an Off-center wire multiband Antenna. The old version was fed just by a single-wire connected on 1/3 of antenna's overall length or with an open-line feeder (later versions). Here is another model with coaxial feeder, which is compatible with Solid States - 50 Ohm output transceivers .
[ Hits: 7759 | Votes: 6 | Rating: 6.67 ]
- The Coax-Fed Windom
- Classical coax-fed, off-center-fed dipole, feeded with a 4:1 Guanella balun
[ Hits: 1036 | Votes: 2 | Rating: 8.5 ]
- Cost-effective ferrite chokes and baluns
- In this article the author describes some new designs of ferrite loaded chokes for suppressing unwanted common mode currents at HF applied to feed lines like choke baluns, but also in the shack, applied to various coaxial, mains and data cables
[ Hits: 151 | Votes: 4 | Rating: 5.5 ]
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