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Thread: RF in the shack!

  1. #31
    Whacker Knot WØTKX's Avatar
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    Wall wart ferrite beads, maybe, but I'd try one of these...

    DSL Phone line filter, from Home Depot


    Or, this one, because I like the name.

    http://www.ky-filters.com/
    "Where would we be without the agitators of the world to attach the electrodes
    of knowledge to the nipples of ignorance?" ~ Professor "Dick" Soloman



  2. #32
    Pope Carlo l NQ6U's Avatar
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    Those Home Despot things are for filtering out the DSL frequencies from the voice frequencies so you don't hear a buzz when you're using your telephone. They won't help with RFI issues at all.
    All the world’s a stage, but obviously the play is unrehearsed and everybody is ad-libbing his lines. Maybe that’s why it’s hard to tell if we’re living in a tragedy or a farce.

  3. #33
    Whacker Knot WØTKX's Avatar
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    Umm, yea, my bad. Not (and never have been) a DSL user.

    The correct one would be a telephone RFI filter, like the "KY".

    http://www.tomthompson.com/radio/Tel...telephone.html
    "Where would we be without the agitators of the world to attach the electrodes
    of knowledge to the nipples of ignorance?" ~ Professor "Dick" Soloman



  4. #34
    Forum Addict KA9MOT's Avatar
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    OK, I made some progress. I used a T130-2 torroid on the wall wart power cord. About 10 turns. 40M and down I still have problems with 5W. 20M and up it works FB at 100W. I no longer have problems on the dummy load on any band using 100W. I did not test on 160M or 30M.


    "One man with courage makes a majority." ~ Andrew Jackson




    Steve KA9MOT
    Macomb, IL

  5. #35
    Conch Master W2NAP's Avatar
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    id find a better built wallwort.
    I AM THE VOICE OF THE VOICELESS!

  6. #36
    Forum Addict KA9MOT's Avatar
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    Quote Originally Posted by W2IBC View Post
    id find a better built wallwort.
    I already tried that. I used the wall wart that came with my D-Link WiFi Router which previously had no problem and it didn't help.


    "One man with courage makes a majority." ~ Andrew Jackson




    Steve KA9MOT
    Macomb, IL

  7. #37
    Forum Addict KA9MOT's Avatar
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    K1DNR posted these two sites over on the zed:

    http://vk1od.net/measurement/icm/index.htm

    http://www.ifwtech.co.uk/g3sek/clamp-on/clamp-on.htm

    I think a project is in my future! I have everything I need except the meter.


    "One man with courage makes a majority." ~ Andrew Jackson




    Steve KA9MOT
    Macomb, IL

  8. #38
    La Rata Del Desierto K7SGJ's Avatar
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    Quote Originally Posted by KA9MOT View Post
    K1DNR posted these two sites over on the zed:

    http://vk1od.net/measurement/icm/index.htm

    http://www.ifwtech.co.uk/g3sek/clamp-on/clamp-on.htm

    I think a project is in my future! I have everything I need except the meter.

    I'll look around. I may have one out of an old high voltage probe. I just can't recall if it's 100ua.
    A clear conscience is usually a sign of a bad memory

    RIP ALBI-W3MIV RIP RUSS-W5RB RIP BOB-VK3ZL





  9. #39
    Forum Addict KA9MOT's Avatar
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    That would be very cool. I was going to run down to the radio shack tomorrow but I doubt they have anything.


    "One man with courage makes a majority." ~ Andrew Jackson




    Steve KA9MOT
    Macomb, IL

  10. #40
    La Rata Del Desierto K7SGJ's Avatar
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    Well, you could always tear one out of their analog meters. Take the case and mb back and tell them it doesn't work. Probably be a week before they realize the movement is missing. They are 100ua FS as I recall.
    Last edited by K7SGJ; 03-12-2012 at 09:02 PM.
    A clear conscience is usually a sign of a bad memory

    RIP ALBI-W3MIV RIP RUSS-W5RB RIP BOB-VK3ZL





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