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Thread: Your average band noise smeter reading on HF

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  1. #21

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    small loop here. S-meter bounces between zero and 3 at the moment on 20M.
    vy 73, de frank, k2ncc

  2. #22

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    Between S5 and S8. Antenna is a MFJ magnetic loop on my apartment balcony.

  3. #23
    Join Date
    Jan 2002
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    harms way
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    13,449

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    Quote Originally Posted by N8HM View Post
    Between S5 and S8. Antenna is a MFJ magnetic loop on my apartment balcony.
    Have you tried to null that noise?
    now with true viterbi decoder!

  4. #24
    Join Date
    Jun 2010
    Location
    Northeast Ohio USA
    Posts
    111

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    Quote Originally Posted by W9OE View Post
    My worst band by far is 40 meters. Some nights I can have an S7 noise level about 40% of the time. I do use the internal pre-amp always. 20 meters and up are never a problem. I do live in the city so I would expect a little noise from time to time. It is just something you have to adjust too and learn to work around.

    I resent weeks I have had a lot or noise in the form of static crashes due to all the storms down round Tenn. I sure wish they would keep their noise to them selves down there.
    Almost identical to my QTH only no amplifiers.

  5. #25
    Join Date
    Jan 2008
    Location
    Overland Park, KS
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    5,853

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    Quote Originally Posted by WN9HJW View Post
    Depends on how I set my attenuators, pre-amps, and RF gain, and which antenna I'm using. Could be anywhere from S0 to S9+
    This is the correct answer, the original question was way to broad and can't be answered.

    fp
    [FONT=T93Y][COLOR=#0000ff][B]ACFP

    [/B][/COLOR]
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  6. #26
    Join Date
    Feb 2006
    Location
    San Vicente, Alicante, Spain
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    7,750

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    Without preamp or attenuator on average S5-S9 on 75m. Pretty much nothing on any other band. A bad transformer used to destroy 10m for me but a squirrel fixed that.
    73 de KB3LAZ

    In lieu of achievement we have mediocrity.

  7. #27
    Join Date
    May 2009
    Location
    CM97cg
    Posts
    752

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    Quote Originally Posted by KJ3N View Post
    Yep, that was helpful.
    It is actually.

    Quote Originally Posted by N0SYA View Post
    Appreciate the info gents. I should have been more specific by asking for band noise level when that band is open; 20 daytime, 40 all day, 80 at night, you get the idea.
    I've got a 167' horizontal loop. And oddly enough, when the band is open is when I see the lowest noise levels. However once everyone in the neighborhood comes home and fires up their Plasma/LCD/LED Tv's, microwaves, CFL lamps etc.. Yeah I get S5-S9+. Again though, when the bands are open, I get lower S readings in the S3-S5 range.
    "[I]Keep the Amateur in Amateur Radio. Keep the professionals and Part 90 out[/I]." Ed Brooks, W5HTW (SK)

    [B][SIZE=3]If you can't make fun of yourself, go sit in the truck :cool: - W5WPL[/SIZE][/B]

  8. #28
    Join Date
    Nov 2003
    Location
    Savanna, Illinois, the west coast of Illinois that is.
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    Most of the time there is little band noise here with the semi resonant hunk of wire in the sky. {it is cut to be resonant around where The Breakfast Club hangs out.}

    But,... around Christmas time the neighbors put out a heard of mechanical lighted reindeer that will pretty well destroy all radio reception when the timer on them kicks in.

    I guess that's my payback for turning all the touch lamps in his house on and off when I operate.
    KA9VQF

    Any tool is a weapon if you hold it right.

    The only difference between stupidity and genius is that genius has its limits. A. Einstein

  9. #29
    Join Date
    Mar 2010
    Location
    Grays Harbor WA
    Posts
    521

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    I live near the coast in Washington State: noise levels here are very common S3-S7. I've found those rare occasions when here is less than S1 noise and tried to work, but the air is dead. I've only had bands open and been in the shack 1 time where I could work with less than S1 of noise--it was glorious! I worked someone that had a signal of 5/1. A good balun and ferite beads go a long way to getting you out of the common mode noise link too.

  10. #30
    Join Date
    Jan 2002
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    harms way
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    I should have asked about local man made noise v natural, but that's ok, I have enough info to see most everyone has about s3 and higher most times.
    now with true viterbi decoder!

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