Dipole Orientation.

Discussion in 'General Technical Questions and Answers' started by G7GPL, Nov 18, 2009.

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  1. G7GPL

    G7GPL Ham Member QRZ Page

    Hi all.

    I am about to erect a new antenna. Its a dipole for 20mts. Whats the best orientation do members consider for 'general use' for someone who lives in the north west of England. (Between Manchester and Liverpool.)

    I shall call the 2 ends of the dipole 'Nose' and 'Tail' ....... Yes I know a dipole has neither as its balanced, but it saves confusion. (imagine its a snake :) )

    So what do you all think is best for me for the 'nose-N-tail' to point. I have 3 options available to me. (due to available supports to string ends to.)


    North - South (nose-tail)

    NNW - SSE (nt)

    WWN - EES (nt)




    Many thanks, Nick
     
  2. AC0FP

    AC0FP Ham Member QRZ Page

    Just off hand I would chose your first or second directions listed, to give access to the maximum number of stations. With that said, what is the height of the 20 meter dipole? If the antenna is not at least 1/2 wavelength high then the overall antenna pattern will tend to be more "omnidirectional" with the maximum radiation lobe straight up! :eek:

    73,

    fp :)
     
  3. K7MHI

    K7MHI XML Subscriber QRZ Page

    i think your going to have problems with neighbors with a snake in the air! :)


    use all of them! start off in one, then after 6 months move to the next to see how you find new stations etc. or your signal strength working the old
     
  4. WA4ILH

    WA4ILH Ham Member QRZ Page

    Nick, Unless you elevate your dipole at least 1/4 wavelength above ground, it will exhibit little (or at least multiple lobe) directivity. A dipole is directive broadside to the array. If you want to talk to North America for example, (NW) the wires should run roughly southwest to north east, giving you a NW broadside pattern.
    (I see that I "doubled with AC0FP, who said about the same thing concerning height)
    Tom WA4ILH
     
    Last edited: Nov 18, 2009
  5. G7GPL

    G7GPL Ham Member QRZ Page


    :eek: ........... Eeeeeeeeeeeeeeeeek.! ........... Do they have 20mts on the space station. :rolleyes:;);)

    Antenna height will be about 12 mts.



    Nick
     
  6. G7GPL

    G7GPL Ham Member QRZ Page



    Its ok.! .............. I live on a nudist colony. ;);):eek::D
     
  7. W5DXP

    W5DXP Ham Member QRZ Page

    To whom/where do you want to make contacts?
     
  8. G7GPL

    G7GPL Ham Member QRZ Page


    Well you 'Good ole' American boys seem a friendly bunch of 'renegades' ;) ...... Invariably polite and willing to chat about almost anything. Plus there are thousands of you. :)

    Good enough place to start eh.??



    Nick
     
  9. G0GQK

    G0GQK Ham Member QRZ Page

    The wire is, or will be, approximately just under forty feet above ground so that will be sufficient to have some direction on 20 metres. The height to avoid is 3/4 of a wavelength, so the books tell us, I don't know never had an antenna above 25 feet. but you will find you will have more contacts with European stations anyway, because there are more of them, and they're closer.

    All this WWN busines has me confused, the best position, assuming you live in Warrington, is to have the tail pointing towards Frodsham and the head towards Bolton. You can then chat with Alberto and Klaus most of the day and Bob in New York when he pops in, and then hope for a goodly supply of sunspots.

    G0GQK
     
  10. KJ6CNS

    KJ6CNS Ham Member QRZ Page

    Just wanted to ask for some clarification. When discussing height, is that height above land or height to any surface? Meaning if on a roof, do you count the feet above ground or the feet above the roof?
     
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