CobbwebAfter studying several articles on the webs I tried to figure out a concept construction for my first Cobwebb antenna. An awful lot of tie wraps, a few fishing rods and a almost 50 meters of electrical wire. A few hours DIY in the rain and you see the result beneath. First test results: even at only 2,5 meter height very nice reception! In comparison to my end fed wire it’s a lot less noisy and picks up even very weak signals. Last night I was even listening to local QSO’s of amateurs in North America on 20m! Transmitting is another story on this height of course. No one heard me since, but almost all dipoles are resonant in the band and SWR is good. I think it will be even better when it’s on good operating height of 10 meters. I’m planning to put it on a pole on the roof, then it will be 14 meters high and more ore less 360 degrees free around.
The construction is of course just for testing purposes only. I need to construct another feed point which is waterproof. I’m not satisfied with the tie wrap solution to attach the wires to the spreaders. I think it’s not UV-proof too. I’m thinking about drilling little holes in the spreader to put little screws in them. And the end of the dipole wires I want some elastic pieces in. Then the wires will be tight all the time. Just haven’t figure out what to use for the elastic material yet.
And the baseplate needs some adjustment too, no possibility to attach a vertical pole in it now and the spreaders are not properly aligned. So need to do some rework… Then again, it’s only version 0.1!

2 thoughts on “Cobwebb version 0.1

  1. Hi OM!

    Ik heb een vraag:
    Als klein behuisde, ben ik op zoek naar een bruikbare antenne en de Cobwebb trekt hierbij steeds mijn aandacht.
    Zou U mij kunnen vertellen, hoe deze bevalt?

    Bij voorbaat bedankt voor het antwoord.

    Met de vriendelijke groeten,

    Jan Peverelli
    PD2JHP

    Meer info http://www.qrz.com/db/pd2jhp

Leave a Reply