Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Aerial Question

  • 12-10-2012 9:23am
    #1
    dominoman
    Registered Users, Registered Users 2 Posts: 124 ✭✭


    I have a grid aerial that I have accidentally broken off the balun. My question is this aerial of any use without the balun. It is a couple of years old and the balun just seemed to snap off when I opened it to check the cable. The problem now is I have nothing to connect the cable to.


Comments

  • #2
    SPAWKER
    Registered Users, Registered Users 2 Posts: 791 ✭✭✭SPAWKER


    dominoman wrote: »
    I have a grid aerial that I have accidentally broken off the balun. My question is this aerial of any use without the balun. It is a couple of years old and the balun just seemed to snap off when I opened it to check the cable. The problem now is I have nothing to connect the cable to.
    No its time for a new one,its aluminum so no way to solder it. Even if you did it will break again when it gets windy. A new one will set you back around E30.


  • #3
    watty
    Registered Users, Registered Users 2 Posts: 32,417 ✭✭✭✭watty


    You can use screw terminal block, or tie-wrap coax outer and inner to the middle of the feed and loop the coax into 4 turns about 10cm diameter near the aerial, just behind reflector, as primitive Balun as a short term solution.


  • #4
    dominoman
    Registered Users, Registered Users 2 Posts: 124 ✭✭dominoman


    I take it you mean something like this Watty. I will give it a try


  • #5
    watty
    Registered Users, Registered Users 2 Posts: 32,417 ✭✭✭✭watty


    224265.jpg
    That's the bunny. It's a good idea to have a loop like that on ALL aerial installs near the aerial. As long as ties don't press into cable and loop isn't too tight (damages screen) it always helps. Dramatically reduces voltage spike when there is lightning a few 100m away (nothing helps for a direct strike).

    Put it just behind reflector with short "tail" to the feed point


Advertisement