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using an unun and a current balun on the same feed line?

Discussion in 'Home Brew' started by Rusty_831, Jul 27, 2020.

  1. Rusty_831

    Rusty_831 Member

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    hi I was hoping to get some advice from the group on how to impedance match my mobile setup and also use a current balun to mitigate any common mode current. according to my rig expert at resonance my 1/4 wave vertical measures z= 60 j+.01 and id like to wind an unun to match the coax to the antenna but I also want to wind a choke to take care of any common mode current present. can this be done in one enclosure or on a single torrid or does it need to be one separated from the other in series before the feed point . id like to use a single box to accomplish this and mount it at the feed point but im in uncharted territory again and need some assistance please.


     

  2. sp5it

    sp5it Master of puppets

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    Z=60 don't bother impedance matching.
    Mike
     
    midnight special likes this.
  3. Captain Kilowatt

    Captain Kilowatt Professional Amateur
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    Z=60 is an SWR of 1.2:1 No need to match it. Leave it alone.
     
    sp5it and BJ radionut like this.
  4. Rusty_831

    Rusty_831 Member

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    great will just use the 1:1 current balun and call it good. thanks for the advice and taking time to reply.
     

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