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Image of Connector to LNB needed.

  • 23-12-2010 3:45pm
    #1
    Registered Users, Registered Users 2 Posts: 958 ✭✭✭


    hi

    Please forgive my ignorance I'm a bit confused as to the connector I need to connect the Coax to the LNB and don't wanna end up getting the wrong one.

    Anyone help with a link to the right bit I need please?

    Thanks

    fbp.


Comments

  • Banned (with Prison Access) Posts: 7,102 ✭✭✭Stinicker


    You need what is called an F-Connector, it is a screw on type. This is used to terminate both ends of the Satellite coax cable for both connecting to the LNB on the Dish and to the Satellite set-top box.

    http://www.w-l-t.org/Pix/Coax%20w-F%20connector.jpg

    http://www.rightdone.com/images/s/200911/f-connector.jpg


  • Registered Users, Registered Users 2 Posts: 958 ✭✭✭fatboypee


    Perfecto !

    Thanks for the quick response.

    Merry Christmas !

    FBP.


  • Registered Users, Registered Users 2 Posts: 2,711 ✭✭✭fat-tony


    The first type pictured is almost never used except in specialist installations. Most are screw-on type (second picture). Here's a link to a video on how to connect the F-connector to the cable:
    http://www.satellite.ie/acatalog/F_coaxial_connector_Screw_on___4_pack_.html

    It's on a shop website run by one on the major contributors to this forum (no relation!).


  • Registered Users, Registered Users 2 Posts: 11,340 ✭✭✭✭Tony


    Thanks cousin Tony :)

    fat-tony wrote: »

    It's on a shop website run by one on the major contributors to this forum (no relation!).

    Desktop PC Boards discount code on https://www.satellite.ie/ is boards.ie



  • Registered Users, Registered Users 2 Posts: 154 ✭✭Dony


    Probaly a dumb question.
    What does the 'F' stand for in f-connector?


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  • Closed Accounts Posts: 199 ✭✭Sam the Aerialman


    Dony wrote: »
    Probaly a dumb question.
    What does the 'F' stand for in f-connector?

    Female


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


    The bit on the box anyway (= Female Port, Indoor ?) ... I'd never thought what it stood for.

    http://en.wikipedia.org/wiki/F_connector

    The "common" plug socket in UK & Ireland is a "Belling-Lee connector" and is rubbish. It was invented in 1920s for Medium Wave (0.5MHz to 1.7MHz). http://en.wikipedia.org/wiki/TV_aerial_plug

    Most TV/Radio wall outlets using it are copied from 1950s designs (42MHz to 55MHz Band I) and really poor for UHF.

    Even a lot of "F-Connector" wall outlets are poor. So I use a deeper box and plate drilled either for SAT/TV diplexer or for F-type barrel (note one side is longer than the other just for this purpose).

    Screw terminals are no good for Coax (crush it) and often expose too much without screen (mismatch, radiation, interference pick up)

    Also
    The "UHF plug" (PL529) seems a misnomer till you realise that when it was invented that 150MHz was UHF! (It's actually rubbish for what we call UHF today).


  • Registered Users, Registered Users 2 Posts: 11,340 ✭✭✭✭Tony


    Dony wrote: »
    Probaly a dumb question.
    What does the 'F' stand for in f-connector?

    Nothing its just a letter designation, there are also N type connectors as well as many other not in common use.

    Desktop PC Boards discount code on https://www.satellite.ie/ is boards.ie



  • Closed Accounts Posts: 199 ✭✭Sam the Aerialman


    Tony wrote: »
    Nothing its just a letter designation, there are also N type connectors as well as many other not in common use.

    That's not strictly true the N connector was named after the engineer Paul Neil and is used heavily in broadcast hardware.

    Below 4 in use on a power divider feeding a 16 stack bowtie dipole array. These were the favoured BBC/ IBA array inside the shroud found at the majority of medium power relays. 50ohm versions from what i recall, they were a nightmare when you were stuck up a telegraph pole.


  • Registered Users, Registered Users 2 Posts: 11,340 ✭✭✭✭Tony


    I bow to your superior knowledge Sam :)

    That's not strictly true the N connector was named after the engineer Paul Neil and is used heavily in broadcast hardware.

    Desktop PC Boards discount code on https://www.satellite.ie/ is boards.ie



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  • Closed Accounts Posts: 199 ✭✭Sam the Aerialman


    Tony wrote: »
    I bow to your superior knowledge Sam :)

    Not a case of that at all. I have to say to it's been an interesting few months on this forum. Seems we're one year closer to switchover and probably none the wiser, at least we seem to be getting there slowly.

    Just to say a quick thanks to Watty, Lawhec and many others for very interesting comments it's great to know that there is learning in the trade to be done.

    I wish you all a very Happy Christmas and hopefully especially for installers when the thaw hits a more prosperous New Year.


  • Registered Users, Registered Users 2 Posts: 11,340 ✭✭✭✭Tony


    Just kidding with you Sam. Its great to have a knowlegeable aerial man on the forum. Happy Christmas to you and yours


    Not a case of that at all.

    Desktop PC Boards discount code on https://www.satellite.ie/ is boards.ie



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