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Any clues to what makes this signal on 160 Meters?

Ken - NM9P
Ken - NM9P Member ✭✭
edited June 2020 in SmartSDR for Windows
On the left side of the pan, there is a signal that begins at a single point and then fans out much wider.  I have never seen this before and wonder what it might be.  This was this morning during my local  Indiana greyline time while trying to listen for W1AW/KH6.image

Answers

  • Jim KJ7S
    Jim KJ7S Member ✭✭
    edited January 2020
    At my station, there is a front loader pair, washer and dryer. When the washer is cycling, it sometimes produces a similar "leaf rake" type of pattern, generated by variabe speed controllers/motors. Look for that possibility in these, and other sources including newer furnaces etc. And if you are close ebough to another residence, may even get a little from them.
  • Richard G7EIX
    Richard G7EIX Member ✭✭
    edited March 2015
    Looks like the same pattern I get from our Trane Hyperion Handler when it fires up.   Variable speed motor.
  • Dave - WB5NHL
    Dave - WB5NHL Member ✭✭
    edited December 2014
    I have exactly the same pattern from my HVAC fan. What you are seeing is a motor coming up to speed.  Here is what I see
    image
  • John n0snx
    John n0snx Member
    edited April 2015
    No worries Ken... now that you know.... Just turn your furnace off for the winter
  • Steve-N5AC
    Steve-N5AC Community Manager admin
    edited June 2020
    Reminded me of this:

    image

    But I suspect the source phenomena are different.
  • Ken - NM9P
    Ken - NM9P Member ✭✭
    edited December 2016
    You guys need a vacation!  hi hi...lol.
  • Richard G7EIX
    Richard G7EIX Member ✭✭
    edited March 2015
    I think it was North Korea getting a little uppity about "The Interview"

    image
  • John n0snx
    John n0snx Member
    edited April 2015
    Good one Steve!!!!    Merry Christmas Ken   stay warm OK
  • Rick_K7ET
    Rick_K7ET Member ✭✭
    edited December 2016

    Showing your age there, Steve!  Hi, HI


  • Bill-W9OL
    Bill-W9OL Member
    edited October 2016
    Yea, sure looks like Sony put an end to my chance of ever getting that cw card to fill my straight. modes.
    Funny I have the two harder ones confirmed, just missed the CW.
  • Philip KA4KOE
    Philip KA4KOE Member ✭✭
    edited June 2016
    MISSLE COMMAND!!! We are all older, lads.
  • Philip KA4KOE
    Philip KA4KOE Member ✭✭
    edited June 2016
    I guess since the balloon just went up I won't get to enjoy my Maestro when it comes in!!! **sniff** **sniff**

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