RadioReference on Facebook   RadioReference on Twitter   RadioReference Blog

Go Back   The Forums > HF / MW / LW Monitoring > HF/MW/LW General Discussion

HF/MW/LW General Discussion - General discussion on monitoring the HF (High Frequency), MW (Medium Wave), and LW (Long Wave) spectrum (0.5 - 30 MHz)

LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 04-29-2017, 10:52 PM
  Premium Subscriber
Premium Subscriber
Join Date: Jun 2007
Posts: 394
Default West Coast HF Weird Interference

On the West Coast from 100khz to 60Mhz there seems to be a constant interruption in this whole spectrum spaced at 100khz or very close to it spacing. It sounds like dead air. The consistency is there and I am wondering if anyone else can hear it? This just started about a day or so ago.
Reply With Quote
Sponsored links
  #2 (permalink)  
Old 04-30-2017, 3:54 AM
Join Date: Sep 2012
Posts: 642

Sounds like local RFI. Do you have a new electronic device in your house?

Or -- if you're in a condo or apartment complex, could be a nearby neighbor.

Something with dead carriers spaced that close to each other, and that widespread, sounds like RFI.
Reply With Quote
  #3 (permalink)  
Old 05-02-2017, 4:50 PM
GB46's Avatar
Join Date: Feb 2017
Posts: 47

Regularly spaced carriers like that are often caused by radiation from TV receivers. That kind of RFI shows up here, too, although I haven't checked the exact spacing. I don't watch TV or even have a TV here in my apartment, but there's an unused live cable outlet, and I'm sure my neighbors watch TV. In fact, one of them has a TV with a 54-inch screen. One clue is that the interference doesn't start until the early evening, which is when most people switch on their TVs.

The RFI may be due to poorly shielded TV cables, radiation coming directly from the TV sets, or both. At any rate, it's a real nuisance. Even this computer sitting right next to my receiver doesn't cause that much interference, and my antenna is indoors!
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -5. The time now is 8:55 PM.

Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
All information here is Copyright 2012 by LLC and Lindsay C. Blanton III.Ad Management by RedTyger
Copyright 2015 by LLC Privacy Policy  |  Terms and Conditions