Constructing the 7 Band Cobweb 73's Antenna (

Ғылым және технология

Part 2 on the 73's Cobweb Antenna Series. We will contruct it and go through all the untangeling and tightening to build it. Source: 73antennas.com/product/cobweb...
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Edited by Callum Jakeman
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Пікірлер: 49

  • @Radix.Strategy
    @Radix.Strategy2 жыл бұрын

    "The fundamental rule of antennas is that everything affects everything." Well said!

  • @jptucsonaz8503
    @jptucsonaz85032 жыл бұрын

    Hi Dave, thanks for the build; very nice. I was going to say that it seems to me that virtually every antenna that involves booms, poles, etc.; except plain wire antennas, - that building it on a vertical post is nearly mandatory, so that you can support it, spin it, get at the top & bottom to adjust & tighten things... As I am 6'3", I figure a pole that's about 5 foot is just right. I can stand up & look down on it, or sit in a chair below it. Before you put it up on the tall pole for testing; please do some SWR & listening tests where it is, to illustrate how the SWR is impacted with differing heights. Thanks & 73, John - N7GHZ

  • @paulkish007
    @paulkish0072 жыл бұрын

    ThankYou David and Kalum, for showing the antenna construction!

  • @AlanElBee
    @AlanElBee2 жыл бұрын

    The neighbor: "Look Martha! That neighbor Dave is putting up another antenna!" Keep em coming Dave, thanks so much. K7KS

  • @kc8wvg

    @kc8wvg

    2 жыл бұрын

    I often think that's what my neighbors are saying. Before, they settle in for a cookout and a show😁

  • @johng7rwf419
    @johng7rwf4192 жыл бұрын

    Very good Dave, in addition being from the other side of pond I enjoyed the views of the local topography...

  • @jamescady723
    @jamescady7232 жыл бұрын

    Thanks, Dave! Been looking forward to the continuation of this antenna review!

  • @otrdriver6767
    @otrdriver67672 жыл бұрын

    I wish I had the space to use this type of antenna. I appreciate your time and showing us how to put it together.

  • @robthomas4886
    @robthomas4886 Жыл бұрын

    Looks like a well thought out rig! Thanks for posting.

  • @DK5ONV
    @DK5ONV2 жыл бұрын

    Nicely assembled and looks great. I am sure this Antenna makes some noise... 💯👍💯🎸🙋‍♂

  • @clems6989
    @clems69892 жыл бұрын

    Damn Dave ! How do you do it ? I mean just the prep work and setting up videos etc is a ton of work. Not to even mention the actual video itself. Glad your able to keep doing them....Dont overdo yourself though...73 OM ...N8QZH

  • @pedroavex
    @pedroavex2 жыл бұрын

    Hi Dave! Looking forward to your video on testing this big babe! Thx and 73!

  • @opticalman1jeffkeokro741
    @opticalman1jeffkeokro7412 жыл бұрын

    Dave, great video, other than the wire and rope problem it went together very nicely. I am not sure I have the room for one but it sure was a lot easer then when I put up my AV-680. I will have to check but if I have room it would be something I would diffidently be interested in.

  • @eddy2561
    @eddy25612 жыл бұрын

    Me thinks I'll stick with my 49:1 EFHW dipole.....I've been working the world late at night, FT 8 of course.....and CW when I can find them 73/K6SDW

  • @BryanTorok
    @BryanTorok2 жыл бұрын

    Nice antenna. At $479 it does seem a bit pricey to me. On the other hand, it does seem well made with fiberglass and stainless steel and all the cutting and fabricating done.

  • @Stewart0494
    @Stewart04942 жыл бұрын

    Another excellent review.

  • @BryanTorok
    @BryanTorok2 жыл бұрын

    I'd like to see what the SWR is and how it receives low to the ground to compare to how it performs up in the air on a pole. Also, it would be good to know how close they got the tuning or how much tuning one should plan on having to do.

  • @pedroavex
    @pedroavex2 жыл бұрын

    I wrote the guys from 73 antennas but they said only within couple months they will have a remote warehouse in Europe, namely Spain... As i am in Portugal, will have to wait because the freight from Australia to up here for such a big package will cost more than the antenna itself, probably... The antenna looks quite well done and easy to assemble. Looking forward for your testing video!! Thanks!!

  • @cuban9splat
    @cuban9splat2 жыл бұрын

    Dave, thank you for showing us this very interesting antenna. It's very well made with dipoles for 7 different bands all on the same framework. Kudos to your helper too. Does he have his license yet? (hint-hint) 73 de K7RMJ Frank

  • @larryzuravin4226
    @larryzuravin42262 жыл бұрын

    Nice antenna, I am considering one. I would have bolted all but the balun arms down first. Then the lines to square it up. Then the radials. Ideally, if you had yourself and another, you could be attaching parts while the other person worked on the tangled radials. Looking forward to the next video on erecting the cobweb! 73, DE KB2WZT

  • @davidc5027
    @davidc50272 жыл бұрын

    73 Antenna is smart because we don't use instructions anyway ;) Half of the fun is fumbling through the parts whilst figuring out how to put it together, and as a bonus there are usually extra parts laying around at the end of the build, that would have been wasted had we read the instructions. So, just say no to instructions, and use those extra parts for other ham projects! Cheers and 73 EDIT - On a serious note, it is nice 73 sent extra parts in case they are needed in the future. Also, the design is good enough where instructions are not needed, and this appears to be the case.

  • @josef9064
    @josef9064 Жыл бұрын

    Could you please tell me how long each end of the antenna is? Thank you very much

  • @russellk4qpr826
    @russellk4qpr8262 жыл бұрын

    Thanks Dave for showing the complexities. I remember your video on mfj 2010. You said Unroll the wire. Was this not an option?

  • @gordonblank6845
    @gordonblank6845 Жыл бұрын

    I was going to buy the MFJ cobweb until I saw this video. The materials and construction methods are way better than MFJ’s antenna. I read many reviews of the MFJ’s materials were sub-par. When I saw this antenna I knew that the extra $50.00 was a smart move over the MFJ.

  • @worms1
    @worms12 жыл бұрын

    great video Dave. thanks. (the key to unraveling wire and rope is - hire a kid)

  • @paulkish007
    @paulkish0072 жыл бұрын

    Callum

  • @timbacchus
    @timbacchus2 жыл бұрын

    That rope is like Christmas lights.

  • @stefann.2844
    @stefann.28442 жыл бұрын

    Dave, do you think, once complete assembled, it would be possible to fold and unfold the antenna (with a „individual mechanism“) for using it for a temporary mounting in a area of limited space? Unfolding it first at a „suitable height“. Like a Rotary dryer. 73‘, Stefan

  • @erpece

    @erpece

    2 жыл бұрын

    Smaller cobwebs (10m - 20m) are sometimes shipped fully set up, tuned and folded like you say. All you have to do is unfold and secure the arms with the supplied screws. It would be very easy to reverse this proces... This one is twice the size of a 'normal' cobweb, so it won't be that easy...

  • @davidsradioroom9678
    @davidsradioroom96782 жыл бұрын

    Before assembly, it might be called the Spaghetti Antenna!

  • @mewrongway
    @mewrongway Жыл бұрын

    Hi Dave, Its been 10 months, Are you still happy with the Cobweb?? Thanks

  • @allangoodger969
    @allangoodger9692 жыл бұрын

    looks like my Australian hills hoist clothes line my be a contender.

  • @DonzLockz

    @DonzLockz

    2 жыл бұрын

    I was thinking the same thing. A great Aussie invention. :)

  • @rogerlafrance6355
    @rogerlafrance63552 жыл бұрын

    Perhaps not 40, but, building something like that into a plastic gazebo or sun shelter would be a great HOA beater.

  • @R50_J0
    @R50_J02 жыл бұрын

    If the manufacturer is stubbornly maintaining that no manual is needed, he certainly isn’t going to welcome feedback about winding the elements on cardboard formers.

  • @forgetyourlife

    @forgetyourlife

    2 жыл бұрын

    Didn't read the comments from the manufacturer i guess.

  • @daveN2MXX
    @daveN2MXX2 жыл бұрын

    I can't believe they would ship the antenna wire as you have shown. What a frustrating mess for a very extensive antenna.

  • @dougtaylor7724
    @dougtaylor77242 жыл бұрын

    Everything about the antenna is great, except for the really low power rating. I would buy one tonight if it were rated for 1-1.2k watts.

  • @erpece

    @erpece

    2 жыл бұрын

    I got my 6m - 20m cobweb from a Polish builder. Rated up to 1.5kW PEP.

  • @tonyridlen
    @tonyridlen2 жыл бұрын

    Great video Dave! 73 KC9QVE Kokomo,Indiana

  • @berbaas9048
    @berbaas90482 жыл бұрын

    Apparently manufacturers would rather fold the wire in half again and again rather than roll it up on a form. They should use their own products.

  • @jamesmk2003
    @jamesmk20032 жыл бұрын

    Dave you need to do water fasting.

  • @paulhastings3109
    @paulhastings31092 жыл бұрын

    And no excuse for this antenna all elements should be wrapped on some kind a spool. And no paperwork. I believe that I would spend my money some place else KQ4CD Paul ⚓️

  • @richardschnedorf5711
    @richardschnedorf57112 жыл бұрын

    What a freaking abomination.

  • @Mike-jy7yp
    @Mike-jy7yp2 жыл бұрын

    Someone else should do a video. He sucks. He beats around the bush to much and don't explain anything

  • @mattdisero

    @mattdisero

    2 жыл бұрын

    He’s 70. Give the guy a break. He knows more about radio than most of us put together. Be thankful someone has made the video at all, but of course, the beauty of KZread is if you don’t like it don’t watch. ;) 73’s

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