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Red River Valley Amateur Radio Club

Amateur Radio in and around the Red River Valley Area of Northeast Texas

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Home » Topics » General Ragchew » Dumb Question

Dumb Question

  • This topic has 5 replies, 4 voices, and was last updated 5 months ago by Jerry Keisler.
Viewing 6 posts - 1 through 6 (of 6 total)
  • Author
    Posts
  • April 20, 2023 at 2:53 pm #38863
    Wyndell Ferguson
    Participant

    How is the best way, other than finding another freq of course, to filter out someone on a nearby freq that is way overpowered and bleed onto all the freq around…  Im sure there is a setting Im missing somewhere

    April 20, 2023 at 3:07 pm #38866
    Danial Beard
    Moderator

    HF, VHF or UHF?

    If narrowing your roofing filter — and tightening your passband filter — is not enough, you can try using PBS (pass band shift) and the notch on the offending edge to block some of it.   But the rude reality is, if by function of pure wattage, sloppy audio or physical proximity that doesn’t work, you are probably down to negotiating with the perpetrator.

    A directional antenna with effective nulls can also help, but it’s a BandAid at best.

     

     

    April 20, 2023 at 3:25 pm #38867
    Rick Leonhardt
    Keymaster

    Notch Filter; since u have a 7300 like I do
    Push the waterfall to get an expanded display of the frequencies
    Push the top left button and use the filters ..look like square waves and dial around until you have effectively “notched ” out the offender
    Also you can push the screen last 2 digits to get (after 5 seconds or so) a THIRD digit to give you more tighter tuning.
    Enjoy
    Rick

    April 20, 2023 at 3:33 pm #38868
    Wyndell Ferguson
    Participant

    thanks to both.  Defiantly prox. he is from MN.  Just rude behavior IMHO.  He was just saying CQ CQ CQ about 25 times then unkeying and doing it again, and again…  Wouldnt be so bad but he was about .05 away from a POTA activation I was trying to work…

    April 20, 2023 at 7:13 pm #38875
    Wyndell Ferguson
    Participant

    7300 also has a notch setting, I keep it on narrow sometimes wide but its always on…  I use the 3 filters set to more specific settings that helps too.

    April 20, 2023 at 10:28 pm #38876
    Jerry Keisler
    Participant

    When I had a pair of phased 2 meter beams, I used them to notch unwanted signals all the time.

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The Red River Valley Amateur Radio Club is a licensed FCC radio operator (WB5RDD) and an affiliate of the American Radio Relay League (ARRL) - The National Association for Amateur Radio®.

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