coax baluns
17 links
- Transmitting Baluns
- One of the most popular Ham-lore rumors is a balun's performance can be tested or evaluated by grabbing the coax and watching for an SWR change. This is probably one of the worse test-rumors circulating
[ Hits: 3295 | Votes: 2 | Rating: 9.5 ]
- Magnetic longwire baluns 1:9
- 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: 3584 | Votes: 4 | Rating: 6.75 ]
- 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: 1928 | Votes: 4 | Rating: 7 ]
- 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: 705 | 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 ]
- Common Mode Currents on Coax
- These baluns are used to attenuate the common mode current that flows on the outside of the coaxial feed line.
[ Hits: 175 | Votes: 0 | Rating: 0 ]
- 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: 15201 | Votes: 25 | Rating: 4.32 ]
- 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: 577 | Votes: 8 | Rating: 8.63 ]
- Transmission Lines
- About feed lines, parallel lines and coaxial lines, notes on impedance, SWR, Baluns, velocity factor and more by NZART
[ Hits: 604 | Votes: 1 | Rating: 8 ]
- Do not wind chokes on red toroids!
- I happened to stumble across some antenna projects showing common mode chokes 1:1 baluns made of some turns of coax wound on T200-2 iron powder toroids.
[ Hits: 187 | Votes: 0 | Rating: 0 ]
- 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 ]
- The WireMan
- Your source for coax, connectors, wire, baluns, and other certified quality wireman products.
[ Hits: 11374 | Votes: 13 | Rating: 6.38 ]
- MFJ Enterprises
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- MFJ manufacturer of ham radio antenna products, antenna tuners, antenna analyzers, morse code & CW, SWR wattmeters, antenna accessories , power supplies, audio filters, TVI filters, baluns, coax switches and more
[ Hits: 44187 | Votes: 33 | Rating: 6.84 ]
- HyEnd Company
- HyEnd is a dutch amateur radio antenna manufacturer. Makers of the popular HyEndFeed Antennas, produce Baluns, bandpass filters and selle Line isolators, coax cables and connectors.
[ Hits: 196 | Votes: 0 | Rating: 0 ]
- CoaxMan
- The Coaxman by Clear Signal Products, Inc. features a complete Wireman line of coaxial cable and antenna wire. Antenna wire, baluns, coax connectors, insulators, ladder line,
magnet wire, rope.
[ Hits: 1860 | Votes: 2 | Rating: 4.5 ]
- 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: 854 | 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: 135 | Votes: 5 | Rating: 7.8 ]
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