hey some help her for bilding a antaana

Discussion in 'Antennas, Feedlines, Towers & Rotors' started by A61BN, Nov 27, 2009.

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  1. A61BN

    A61BN Ham Member QRZ Page

    hey how are you all it's a61bn from uae Dubai i want to aske you all how to make an dipole antenna fro 20m and 40m in one antenna i want to make one for myself hoop to her answer from you all soon bye bye
     
    Last edited by a moderator: Nov 28, 2009
  2. K9STH

    K9STH Ham Member QRZ Page

    Parallel dipole is the easiest antenna to make that will cover 20 and 40 meters. In fact, 15 meters will work as well.

    Just make 2 separate dipoles from wire and then connect the wires to the same center insulator. Basically, what you get is a dipole for each band but that is fed with the same coaxial cable.

    Tune the 40 meter section first (for best SWR). Then tune the 20 meter section. The 40 meter section will work as a 3/2ths wave antenna on 15 meters.

    Glen, K9STH
     
  3. AE5JU

    AE5JU Ham Member QRZ Page

    Many antennas here:

    http://www.hamuniverse.com/antennas.html

    A multiband dipole here:

    http://www.hamuniverse.com/multidipole.html

    I have talked to a person that has used as many as 6 sets of elements on a multiband dipole.

    Here is mine like the one above:

    http://www.hamuniverse.com/ae5jumultibanddipole.html

    And this will also work well for you. Less wire, but you will need a 4:1 balun:

    http://www.hamuniverse.com/k4iwlnewwindom.html

    There is no reason you cannot just use RG-8X or LMR-240 all the way to the balun. Use ferrite snap on beads 10' down from the balun as your "choke balun".
     
  4. N5YPJ

    N5YPJ QRZ Moderator QRZ Page

    My best results have been with the dipole elements 90 degrees to each other.
     
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