Will this balun work ok? #antenna #40m


i have this balun from an old end fed 1/2 wave antenna that I was using for listening.  I cut a new 70ft chunk of speaker wire for transmitting on 40m.  I don’t have an antenna tuner and I am just getting started with my first radio.  Does this balun look okay to use and it won’t harm the radio?  I doesn’t quite look like other 1:9 end fed 1/2 wave baluns that I have been reading about.  Here are some picts. 


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