Return to the Electrical Wiring Forum | Post a Follow-Up

TV Antenna Buzzing

Posted by karmaj (My Page) on
Sat, Oct 23, 10 at 11:34

Last night I was outside and realized that my TV antenna was buzzing and making a cracklng sound. I did not see any sparks. It is a standard TV antenna. I am in rural Montana and the reception here is generally poor. There are no other antennas for at least 100 yards. The weather was pleasant last night - no lightening although a little moisture in the air. Is this dangerous? What is causing the buzzing? The only electrical devices on in the house at the time was the front porch light, refrigerator, hot water heater, microwave plugged in. The TV was not on.

Any help to this mystery would be appreciated.


Follow-Up Postings:

RE: TV Antenna Buzzing

never heard of that. the crackling doesnt sound too good, though.

RE: TV Antenna Buzzing

That actually sounds like a discharge.

If correctly installed the antenna has a DC connection to the earth grounding rod.

At RF where it is operating it is NOT grounded.

If the local voltage of the earth changes then the antenna can become a discharge path.

Long before an actual lightning bolt forms there is local discharge from the earth to the air.

If you drive some ground stakes a decent distance apart and then run wire between them you can often measure very high voltages between the stakes.

During an active thunderstorm VERY high voltages.
As a charged cloud move above you a current flows in the earth (called a displacement current) induced by the now moving 'static' charge in the cloud.

You should check the condition of the antenna's lightning arrestor and the connection to ground, but it sounds like things are operating as they should.

RE: TV Antenna Buzzing

Maybe it was excited about the new fall TV schedule...

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Electrical Wiring Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here