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Recent Posts

  • All About the 1:1 Current/Choke Balun

    How a 1:1 Guanella-Balun (Current-Balun) Operates By Jerry Sodus, KM3K In the spirit of the hobby, …
    read more
    2nd Aug 2024 Jerry Sodus, KM3K
  • Baluns, Ununs and Power Ratings

    Currently there is no industry standard for measurement of power ratings for baluns and ununs.  …
    read more
    2nd Aug 2024 Bob, KZ5R
  • Core Material Selecton for Baluns and Ununs

    Selecting the best toroid material or "mix" for baluns and ununs. Transmitting baluns Occasiona …
    read more
    12th Aug 2022 Various
  • Long Wire Radiation Patterns

    This is a partial reprint (with permission) of an excellent series of articles published by KV5R …
    read more
    22nd May 2021
  • SWR and the Impact of Your Feedline

    Reprinted with permission of Hamuniverse, this is an excellent explanation of SWR and how to best me …
    read more
    31st Dec 2019 Walt Fair, W5ALT
  • Antenna Matching Problems When Using Ladder Line or Open Wire Feedlines

    Most matching problems occur when the antenna system presents an extremely high impedance to the tu …
    read more
    3rd Nov 2019 Various

1:1 Isolation / Choke Balun Optimized for Low Bands

Numerous Configurations Available

Learn More

Ideal Baluns for Ladder Line Fed Multiband Antennas

High Performance Choking and Isolation

Learn More

New Transformers for End Fed Half Wave Antennas

Both High & Low Power Models Available

Learn More

Hybrid Balun for Multiband Antennas

Excellent for OCFD, Doublets and Loops

Learn More
Due to supplier shortages, carrier delays and order volume our current production time is 5-7 business  days. Please use this link for additional information about our fulfillment process.
  • Featured
  • New

Featured

  • Model 49134 - 49:1 -  80-10m EFHW - 500 watts Model 49134 - 49:1 -  80-10m EFHW - 500 watts
    Add to Cart
    Quick view

    Model 49134 - 49:1 - 80-10m EFHW - 500 watts

    MSRP:
    Now: $89.95
    Was:
    Balun Designs now offers an excellent reduced power version of our popular model 49131.  Built with the same craftsmanship as
  • Model 1110d - 1:1 Isolation/Choke balun 1.5-35 MHz - 300 Watts Model 1110d - 1:1 Isolation/Choke balun 1.5-35 MHz - 300 Watts
    Choose Options
    Quick view

    Model 1110d - 1:1 Isolation/Choke balun 1.5-35 MHz - 300 Watts

    MSRP:
    Now: $69.95
    Was:
    This low power balun is one of our newest offerings and provides over 30db of suppression across the full HF spectrum of frequencies. Our design provides high levels of feedline isolation, RF choking...
  • Model 64131e - 64:1 & 49:1 -  80-10m EFHW - Up to 1kW Model 64131e - 64:1 & 49:1 -  80-10m EFHW - Up to 1kW
    Add to Cart
    Quick view

    Model 64131e - 64:1 & 49:1 - 80-10m EFHW - Up to 1kW

    MSRP:
    Now: $119.95
    Was:
    For those that enjoy half wave end fed antennas but want to run more power, Balun Designs now offers an excellent alternative.  Built with the same craftsmanship as all our other units, this new...
  • Model 1115u - 1:1 Isolation - Suppression Balun, 1.5-54 Mhz, 3kW  KIT Model 1115u - 1:1 Isolation - Suppression Balun, 1.5-54 Mhz, 3kW  KIT
    Add to Cart
    Quick view

    Model 1115u - 1:1 Isolation - Suppression Balun, 1.5-54 Mhz, 3kW KIT

    MSRP:
    Now: $56.95
    Was:
    The venerable 1:1 isolation/choke balun is the first of our new line of DIY kits.  All components are the same as those used in our ready made units. The completed balun will have an SO-239 for...

Bestselling

  • Model 1116d -  1:1 Balun,  Optimized for Low Bands, 5kW Model 1116d -  1:1 Balun,  Optimized for Low Bands, 5kW
    Choose Options
    Quick view

    Model 1116d - 1:1 Balun, Optimized for Low Bands, 5kW

    MSRP:
    Now: $98.95
    Was:
    This Isolation balun is identical in design to the Model 1115d but with one key exception. The toroid material utilized for the two stacked cores is optimized for the lower HF bands and provides excep
  • Model 1115 - 1:1 Balun, 1.5-31 MHz, 3kW Model 1115 - 1:1 Balun, 1.5-31 MHz, 3kW
    Choose Options
    Quick view

    Model 1115 - 1:1 Balun, 1.5-31 MHz, 3kW

    MSRP:
    Now: $79.95
    Was:
    Balun Designs, in collaboration with Fair Rite products, has developed what we consider to be the best single core 1:1 feedline isolation balun available today. By reviewing the scans shown below you...
  • Model 1115d - Isolation/ Choking 1:1 Balun, 3-54 MHz, 5kW Model 1115d - Isolation/ Choking 1:1 Balun, 3-54 MHz, 5kW
    Choose Options
    Quick view

    Model 1115d - Isolation/ Choking 1:1 Balun, 3-54 MHz, 5kW

    MSRP:
    Now: $98.95
    Was:
    Building on the original 1:1 design by Dr. Jerry Sevick, this balun has two (2) low permeability cores in a stacked configuration to maximize choking impedance on HF bands from 7- 54MHz. By utilizing...
  • Model 4116 - 4:1 Hybrid Balun 1.5 - 54MHz 3kW Model 4116 - 4:1 Hybrid Balun 1.5 - 54MHz 3kW
    Choose Options
    Quick view

    Model 4116 - 4:1 Hybrid Balun 1.5 - 54MHz 3kW

    MSRP:
    Now: $118.95
    Was:
    This is a great all purpose 4:1 current balun designed for those who would like the combination of a 4:1 balun capable of tolerating a compromised antenna installation and still provide a high level...

New

  • Model 49134 - 49:1 -  80-10m EFHW - 500 watts Model 49134 - 49:1 -  80-10m EFHW - 500 watts
    Add to Cart
    Quick view

    Model 49134 - 49:1 - 80-10m EFHW - 500 watts

    MSRP:
    Now: $89.95
    Was:
    Balun Designs now offers an excellent reduced power version of our popular model 49131.  Built with the same craftsmanship as
  • Model 9110 - 9:1 Receive Only Balun - 1.5 - 31 MHz Model 9110 - 9:1 Receive Only Balun - 1.5 - 31 MHz
    Add to Cart
    Quick view

    Model 9110 - 9:1 Receive Only Balun - 1.5 - 31 MHz

    MSRP:
    Now: $66.95
    Was:
    While primarily designed for use with a "Loop on Ground" antenna, this is an excellent 9:1 isolation balun for any receive application.  Separat
  • Model 1110d - 1:1 Isolation/Choke balun 1.5-35 MHz - 300 Watts Model 1110d - 1:1 Isolation/Choke balun 1.5-35 MHz - 300 Watts
    Choose Options
    Quick view

    Model 1110d - 1:1 Isolation/Choke balun 1.5-35 MHz - 300 Watts

    MSRP:
    Now: $69.95
    Was:
    This low power balun is one of our newest offerings and provides over 30db of suppression across the full HF spectrum of frequencies. Our design provides high levels of feedline isolation, RF choking...
  • Model 36131 - 36:1 for EFHW, 800 watts Model 36131 - 36:1 for EFHW, 800 watts
    Add to Cart
    Quick view

    Model 36131 - 36:1 for EFHW, 800 watts

    MSRP:
    Now: $119.95
    Was:
    After much research and testing, a new transformer design for End Fed Half Wave (EFHW) antennas has been achieved. Developed by Bob Glorioso, W1lS and Bob Rose KC1DSQ, they discovered that most...
Show More Collapse

Top Categories

  • Baluns

    • 1:1 Feedline Isolation / Choke Balun
    • 1:1 ATU Baluns
    • 1:1 Common Mode Choke / Noise Suppression
    • 1:2 Balun (25 to 50 ohms)
    • 2:1 Baluns (100 to 50 ohms)
    • 2.5:1 Balun (125 to 50 ohms)
    • 4:1 Baluns (200 to 50 ohms)
    • 6:1 Balun (300 to 50 ohms)
    • 9:1 Receive Only Balun
    • Low Power Baluns
    See All
  • Ununs

    • 4:1 Ununs
    • 9:1 Ununs
    • Custom Ununs < 50 ohms
    • Custom Ununs >50 ohms
    • Low Power Ununs
    • Auto Transformer for End Fed Half Waves
    See All
  • Low Power - Portable Baluns/Ununs

  • End Fed Half Wave Transformers

Featured

  • Model 49134 - 49:1 -  80-10m EFHW - 500 watts

    Model 49134 - 49:1 - 80-10m EFHW - 500 watts

    MSRP:
    Now: $89.95
    Was:
    Add to Cart Quick view
  • Model 1110d - 1:1 Isolation/Choke balun 1.5-35 MHz - 300 Watts

    Model 1110d - 1:1 Isolation/Choke balun 1.5-35 MHz - 300 Watts

    MSRP:
    Now: $69.95
    Was:
    Choose Options Quick view
  • Model 64131e - 64:1 & 49:1 -  80-10m EFHW - Up to 1kW

    Model 64131e - 64:1 & 49:1 - 80-10m EFHW - Up to 1kW

    MSRP:
    Now: $119.95
    Was:
    Add to Cart Quick view
  • Model 1115u - 1:1 Isolation - Suppression Balun, 1.5-54 Mhz, 3kW  KIT

    Model 1115u - 1:1 Isolation - Suppression Balun, 1.5-54 Mhz, 3kW KIT

    MSRP:
    Now: $56.95
    Was:
    Add to Cart Quick view

Bestselling

  • Model 1116d -  1:1 Balun,  Optimized for Low Bands, 5kW

    Model 1116d - 1:1 Balun, Optimized for Low Bands, 5kW

    MSRP:
    Now: $98.95
    Was:
    Choose Options Quick view
  • Model 1115 - 1:1 Balun, 1.5-31 MHz, 3kW

    Model 1115 - 1:1 Balun, 1.5-31 MHz, 3kW

    MSRP:
    Now: $79.95
    Was:
    Choose Options Quick view
  • Model 1115d - Isolation/ Choking 1:1 Balun, 3-54 MHz, 5kW

    Model 1115d - Isolation/ Choking 1:1 Balun, 3-54 MHz, 5kW

    MSRP:
    Now: $98.95
    Was:
    Choose Options Quick view
  • Model 4116 - 4:1 Hybrid Balun 1.5 - 54MHz 3kW

    Model 4116 - 4:1 Hybrid Balun 1.5 - 54MHz 3kW

    MSRP:
    Now: $118.95
    Was:
    Choose Options Quick view

New

  • Model 49134 - 49:1 -  80-10m EFHW - 500 watts

    Model 49134 - 49:1 - 80-10m EFHW - 500 watts

    MSRP:
    Now: $89.95
    Was:
    Add to Cart Quick view
  • Model 9110 - 9:1 Receive Only Balun - 1.5 - 31 MHz

    Model 9110 - 9:1 Receive Only Balun - 1.5 - 31 MHz

    MSRP:
    Now: $66.95
    Was:
    Add to Cart Quick view
  • Model 1110d - 1:1 Isolation/Choke balun 1.5-35 MHz - 300 Watts

    Model 1110d - 1:1 Isolation/Choke balun 1.5-35 MHz - 300 Watts

    MSRP:
    Now: $69.95
    Was:
    Choose Options Quick view
  • Model 36131 - 36:1 for EFHW, 800 watts

    Model 36131 - 36:1 for EFHW, 800 watts

    MSRP:
    Now: $119.95
    Was:
    Add to Cart Quick view

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Balun Designs

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  • Call us at 817-832-7197

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