Why do my speakers pick up radio stations?

  • Thread starter Thread starter mr-tom
  • Start date Start date
  • Tags Tags
    Radio
Click For Summary

Discussion Overview

The discussion revolves around the phenomenon of speakers picking up radio stations, particularly focusing on the reasons behind this occurrence and potential environmental factors influencing it. The scope includes technical explanations and anecdotal experiences related to audio equipment and radio interference.

Discussion Character

  • Technical explanation, Anecdotal experiences, Debate/contested

Main Points Raised

  • One participant suggests that the speakers are poorly made, with internal wiring acting as an antenna and circuit components enabling demodulation, leading to amplified radio signals.
  • Another participant inquires about the setup, asking if the speakers are used at home, connected to a computer, and whether the radio interference persists when unplugged.
  • A different participant shares an experience where a building's frame received radio waves, causing devices with microphones or speakers to pick up nearby broadcasts.
  • Another anecdote mentions the construction of a Faraday cage around a computer to mitigate interference from a powerful radio station, indicating that such occurrences are not uncommon in proximity to strong radio signals.

Areas of Agreement / Disagreement

Participants present various explanations and experiences, indicating that there is no consensus on a single cause for the issue. Multiple competing views and anecdotal evidence remain in the discussion.

Contextual Notes

Limitations include the lack of specific details on the speaker design, environmental factors affecting radio reception, and the potential influence of nearby radio antennas.

mr-tom
Messages
18
Reaction score
0
I get random radio broadcasts coming from my logitech speakers when they are turned on but with no volume. Why is this?
 
Engineering news on Phys.org
Because they're poorly made. Some of the wiring inside the speaker acts as an antenna, and some part of the circuit provides the diode behavior necessary for demodulation. The resulting audio frequency energy is faithfully amplified by the power amplifier, and viola, you have a radio.

- Warren
 
Is this at home? Are they plugged into a computer? Do you get the radio when you unplug them from the computer?

My company helped a building in Philly with a problem where the frame of the building was receiving radio waves and everything with a microphone or speakers on certain floors would play the radio station being broadcast from next door.
 
We had to build what amounts to a Faraday cage around a computer next to WNBC in Washington DC ... long loooong ago.

What you see is not all that uncommon, especially if there is a powerful radio antenna nearby.
 

Similar threads

  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 20 ·
Replies
20
Views
3K
  • · Replies 29 ·
Replies
29
Views
5K
  • · Replies 33 ·
2
Replies
33
Views
5K
  • · Replies 37 ·
2
Replies
37
Views
5K
Replies
74
Views
10K
  • · Replies 14 ·
Replies
14
Views
6K
Replies
20
Views
2K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 21 ·
Replies
21
Views
2K