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Ham Radio - An end fed folded dipole experiment. Part 1, the idea and design.

Discussion in 'Amateur Radio News' started by KB7TBT, Jul 7, 2019.

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  1. AB7E

    AB7E Ham Member QRZ Page

    Except the currents won't be in phase, and now instead of a shorted transmission line it becomes an open transmission line.
     
    KA4DPO likes this.
  2. KG5KPU

    KG5KPU XML Subscriber QRZ Page

    I play around with, experiment, and fail all on my own. I don't blame the guy for having an idea and trying it out. The bigger question is....why did QRZ publish it?????
     
    AF4RK, AB7E, W1LWT and 1 other person like this.
  3. K2XT

    K2XT Premium Subscriber QRZ Page

    As of now (10:30 utc 7/12/19) there have been 7300 views of the first video and 3100 views of the second.
     
    W2VW and W1LWT like this.
  4. W1LWT

    W1LWT Ham Member QRZ Page

    wire---End fed---Dipole---Halfwave fed End fed----OCF-----squared ------round----triagle----loop---longwire-----zepp- and on and on what ever a wire is a wire----tubeing is tubeing---Who carea where's there a wire cut for a band and it works its an antenna. if it unknown lenght and works its just that......there is BOOKS, and articles and storys and what e ver to learn ..There is waisted time on discussion on a subject that is already been worked out for a design or experiment or what ever...just cut some wire hang it and hope for your best if you never read a book...so so so many books about this subject...Have we rasied a question dumb thoughted generation who thinks thinks they know more thats already been discovered and written about and formulated...OMG ..cut a peice of wire and ts that hang it use it ..Its that hard not to enjoy your hobby........
     
    K2XT likes this.
  5. K2XT

    K2XT Premium Subscriber QRZ Page

    Your profile pic says it all. A little duct tape, a little WD40, what else does anyone need? Maybe an xacto knife and a screwdriver !! You got it man.
     
  6. W5DXP

    W5DXP Ham Member QRZ Page

    Here's the definition of a "dipole antenna" from the IEEE Dictionary: "dipole antenna - Any one of a class of antennas having a radiation pattern approximating that of an elementary electric dipole." The technical definition depends on current nodes at each end of a wire and does not depend on where the dipole antenna is fed.

    The Carolina "Windom" antenna is actually an off-center fed dipole. An actual Windom antenna is fed with a single vertical wire against a ground plane, Marconi style.
     
    K8JHR, KX4O and AB7E like this.
  7. G5TM

    G5TM Premium Subscriber QRZ Page

    Because Kevin has almost 20,000 subscribers. Only reason I can think of. 73
     
    VK6APZ, AB7E and WN1MB like this.
  8. AB7E

    AB7E Ham Member QRZ Page

    If everyone thought like you do we'd still be communicating with grunts and smoke signals. Experimentation is certainly one of the ways progress is made, but study, intelligent discussion, and understanding moves things along much faster.
     
  9. N4MIT

    N4MIT XML Subscriber QRZ Page

    I believe that the antenna that is being built in this video is a folded unipole (or monopole) that AM broadcast stations have been using successfully for decades. The efficiency of this type of antenna, be it vertical or as diagrammed angled to a tree top, will depend on its ground field (radials). As with any single element radiator ground loss will be high, but for a "throw up a wire and get me on the air" it will work, just not great.

    https://en.wikipedia.org/wiki/Folded_unipole_antenna
     
  10. N4MIT

    N4MIT XML Subscriber QRZ Page

    I've worked 5 states with smoke signals :)
     

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