pulsing interferance on hf

Discussion in 'General Technical Questions and Answers' started by KE3LB, Jun 23, 2018.

ad: L-HROutlet
ad: l-rl
ad: Subscribe
ad: L-MFJ
ad: l-assoc
ad: Left-2
ad: MessiPaoloni-1
ad: Left-3
  1. KE3LB

    KE3LB XML Subscriber QRZ Page

    Getting a constant pulsing sound on 20 m 40 m tried shutting breakers still there unplugged door bell transformers still there so tried a different set up using my computer on battery power with sdr and still there so it must be coming thru my antenna can it be a problem on the power lines a insulator or something that would create that pulsing noise? and inf appreciated thx 73
     
  2. G0JUR

    G0JUR Ham Member QRZ Page

    a sound clip might help,, "a constant pulsing noise" is a little vague ;)
     
  3. K6BSU

    K6BSU Ham Member QRZ Page

    Easy. Disconnect antenna to determine if the QRM is coming from the ether. Give a better description of the noise. Rep rate, etc.
     
  4. KE3LB

    KE3LB XML Subscriber QRZ Page

    I did and its coming thru antenna
     
  5. KC8VWM

    KC8VWM Moderator Volunteer Moderator QRZ Page

    It could be power lines, but we can't hear the noise so we would just be speculating and guessing.

    Almost everyone has a smartphone, or has access to someone who does. Just record and upload a video recording to You Tube. Then post the link to your recording here.
     
    Last edited: Jun 25, 2018
  6. KE3LB

    KE3LB XML Subscriber QRZ Page

    im emailing it to people asking couldnt get it to go to qrz
     
  7. KE3LB

    KE3LB XML Subscriber QRZ Page

    its 120 pulses a minute
     
  8. KC8VWM

    KC8VWM Moderator Volunteer Moderator QRZ Page

    Ok email and i'll post.
     
    Last edited: Jun 25, 2018
  9. KE3LB

    KE3LB XML Subscriber QRZ Page

    thanks going to try it when I get more time thx .I emailed it to you wonder if you got the sounds im hearing on my radio
     
  10. KC8VWM

    KC8VWM Moderator Volunteer Moderator QRZ Page

    Ok got it. ...That's not power line noise.

    Here's your video so others can see it...



    Other users are complaining about a similar sound here...

    https://forums.qrz.com/index.php?threads/time-signal-intruder.614510/
     
    Last edited: Jun 25, 2018

Share This Page