MFJ Enterprises Original MFJ-913 Balun 4:1 Current 300 Watts

(1238 Reviews)

Price
$65.00

Quantity
(10000 available )

Total Price
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38 Ratings
29
2
2
3
2
Reviews
  • IT Guru

    Greater than one week

    Yes its not 1kw but for a 100w radio it works perfectly fine and being so lightweight it didnt drag my OCF down since i have no way to support from the feed point, only pulled tight from the ends. So for my needs it was perfect.

  • Hester Swaniawski III

    > 3 day

    MFJ is good quality.Worked good on ocf antenna.

  • Harold F. Pfannenschmid

    > 3 day

    Good product, good ship time. Thank you

  • senior_geek_cs_grad

    > 3 day

    I cant really review this product since its sitting in my electronics junk box (term used for parts bin in amateur radio). I will eventually use with some antenna building project and after several months usage give and updated report.

  • Ed G

    > 3 day

    product as expected. appears to be good quality.

  • GrumpyDad

    > 3 day

    I own 2 of these. One is the feed point for a 4 band fan dipole. The other feeds a an end fed Zepp style wire antenna like this: https://images.duckduckgo.com/iu/?u=http%3A%2F%2Fve3clq.files.wordpress.com%2F2011%2F01%2Fw3edpverticalmodel2.jpg&f=1 I could not build a current balun for much less money than these cost shipped.

  • peterfram

    12-06-2025

    The UHF output was misaligned and fixing that isnt easy as you cant remove screws or take this thing apart in any reasonable way. However, performance of this balun is pretty good with multiple wire HF configurations.

  • theosus

    > 3 day

    Used this to build an OCF dipole. 90 feet one way and 45 feet the other way. Hooked to my tuner, I can tune 10 meters to 80 meters with no problems. Works fine on 100 watts SSB. Farthest Ive talked is Russia - 8000 miles away.

  • Dr. Koby Toy IV

    > 3 day

    Nice product

  • c333horne

    > 3 day

    Great product and service

The MFJ-913 is a 300 Watt true current baluns/antenna center insulators that transforms 200 ohms to 50 ohms. Transmission Line Transformer construction using 100 ohm characteristic impedance transmission line gives flat 160-10 Meter response. Large low permeability ferrite cores easily handle full power. SO-239, stainless steel hardware with direct 14 gauge stranded copper wire connection to antenna. Heavy duty weather housing. Measures 4¼ x 2 inch diameter.

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