

MFJ Enterprises Original MFJ-913 Balun 4:1 Current 300 Watts
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IT Guru
Greater than one weekYes 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.
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Hester Swaniawski III
> 3 dayMFJ is good quality.Worked good on ocf antenna.
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Harold F. Pfannenschmid
> 3 dayGood product, good ship time. Thank you
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senior_geek_cs_grad
> 3 dayI 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.
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Ed G
> 3 dayproduct as expected. appears to be good quality.
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GrumpyDad
> 3 dayI 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.
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peterfram
12-06-2025The 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.
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theosus
> 3 dayUsed 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.
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Dr. Koby Toy IV
> 3 dayNice product
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c333horne
> 3 dayGreat product and service