balun hf

49 links

Sleeve Baluns - Sleeve baluns are normally used at VHF and higher. As a general rule, they are not practical at HF. The balun can be inverted and used as a skirt to form part of the antenna element
[ Hits: 1017 | Votes: 1 | Rating: 4 ]
Homemade HF Antenna Balun - AA5TB homemade balun article
[ Hits: 1796 | Votes: 1 | Rating: 10 ]
Build your own HF balun - EA4EOZ home made baluns
[ Hits: 1643 | Votes: 3 | Rating: 7.33 ]
QRP Magnetic longwire balun with VHF-splitter - This Magnetic Longwire Balun (MLB) makes it possible to efficiently use a coaxial lead-in cable with all forms of longwires, T-forms or other types of wire antennas, without the need for an antenna tuner.
[ Hits: 754 | Votes: 2 | Rating: 6 ]
How build a 1:40 Balun - Italian page about a home made a 1 to 40 balun with pictures and measurements on HF bands.
[ Hits: 1317 | Votes: 2 | Rating: 8 ]
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 ]
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: 1522 | Votes: 9 | Rating: 7 ]

Balun for HF wire dipoles - a neat 1:1 50 ohm balun for use on HF horizontal wire dipoles.
[ Hits: 3644 | Votes: 5 | Rating: 4.4 ]
Ferrite Balun for HF - Diagram and sample ferrite balaun for 1.8-30 MHz
[ Hits: 2075 | Votes: 7 | Rating: 9.14 ]

DIY CobWebb Antenna - A DIY guide to build your own compact multiband HF antenna based on the G3TXQ version using a 1:4 balun. This article includes the full part list and instructions to assembly, including the center plate.
[ Hits: 1005 | Votes: 6 | Rating: 7.5 ]

How to construct a multi-band dipole using speaker wire - How to homemade a multi-band HF dipole using 100 meter of speaker wire, 2 strandsm including a homebrew 1:1 choke balun
[ Hits: 879 | Votes: 1 | Rating: 10 ]

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 ]

HF Multiband end fed antennas - A multiband end-fed antenna that cover 3.5 to 30 Mhz using a 1:64 Balun based on a FT240-43 core
[ Hits: 3725 | Votes: 6 | Rating: 4.67 ]

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: 2560 | Votes: 7 | Rating: 9.43 ]

ZigZag Antenna - VHF/UHF unconventional antennas - An unconventional antenna family, the VHF/UHF Zigzag Dipole Antennas. Design, theory and practical construction, transformation and balancing with a half wave balun.
[ Hits: 746 | Votes: 2 | Rating: 8.5 ]
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: 1377 | Votes: 14 | Rating: 5.5 ]

Cushcraft A3S Balun Fix - Cushcraft A3S HF antenna 1:1 balun repair.
[ Hits: 879 | Votes: 1 | Rating: 10 ]

Build an All Band HF Air Core Choke Balun - The main function of the Ugly Balun is to help eliminate rf currents from flowing on the outside of coaxial cable using the principle of choke action.
[ Hits: 792 | Votes: 12 | Rating: 7.84 ]
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: 864 | Votes: 5 | Rating: 6 ]

miniVNA PRO Modifications - The mini Radio Solutions miniVNA PRO is the only affordable vector network analyser (VNA) I know of that offers remote wireless operation. This is very interesting because it allows to measure the input impedance of HF antennas installed at height without having to deal with coax cable lengths, baluns nor common mode suppression chokes. However, to render the miniVNA PRO truly field proof, it requires a number of significant modifications.
[ Hits: 136 | Votes: 5 | Rating: 7.8 ]