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Category: Ham Radio: Baluns/Ununs
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| Description: Baluns and UnUns.
Baluns (balanced to unbalanced transformers) and ununs (unbalanced to unbalanced transformers) are particular types of transmission line transformers. Unlike conventional transformers, they transmit the energy from input to output by a transmission line mode instead of by flux linkages.
Ham radio operators use Baluns and Ununs to act as a choke - isolating the input from the output, thereby allowing transmission line currents to flow. Various types of baluns and ununs are created to transfer energy (along coaxial cable) with maximum efficiency (minimal loss). Many ham radio operators make their own baluns and several companies offer components to enable this. |
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Putting a Balun and a Tuner Together
If you have a balanced line (ladder line) transmission line coming into your ham radio shack (through a tuner) to your rig, does it make sense to add a balun at the tuner? If so, should it be placed on the tuner output side or on the radio side? This article by W9CF explores that issue in depth.
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| | Hits: 354 | Rating: 0 | Votes: 0 | Added: 26-Oct-2005 14:34 GMT | |
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Radio Works
Radio Works offers several wire antennas for HF including:
Carolina Windom
G5RV
Super Loop
Dipoles
They also offer baluns.
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| | Hits: 384 | Rating: 0 | Votes: 0 | Added: 3-Aug-2005 14:22 GMT | |
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RJ & US IMPORTS
RJ & US IMPORTS has good articles on baluns, ferromagnetic cores (as used in ham radio applications), selecting core material for ferromagnetic applications, toroid sizes, data tables, winding toroids, line filters and chokes, baluns and rods, and steps to eliminate RFI.
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| | Hits: 219 | Rating: 0 | Votes: 0 | Added: 8-Nov-2005 22:35 GMT | |
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TET-Emtron
TET-Emtron is an Australian manufacturer of ham radio antennas including mini-beams, wire dipoles, baluns, and more.
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| | Hits: 234 | Rating: 5 | Votes: 1 | Added: 7-Apr-2006 17:57 GMT | |
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Unadilla
Unadilla offers traps, isolators, baluns, and wire antennas for ham radio use.
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| | Hits: 292 | Rating: 0 | Votes: 0 | Added: 10-Aug-2005 14:54 GMT | |
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