Is it possible to deflect or modulate a FM Transmission?

  • Thread starter Thread starter smokingwheels
  • Start date Start date
  • Tags Tags
    Fm Transmission
Click For Summary

Discussion Overview

The discussion revolves around the possibility of influencing or modulating an FM transmission using a speaker, particularly in the context of audio signals and radio frequencies. Participants explore the feasibility of using a speaker as a makeshift antenna and the implications of such an approach.

Discussion Character

  • Exploratory
  • Debate/contested

Main Points Raised

  • One participant questions whether a speaker could influence an FM transmission, suggesting the idea of superimposing FM signals onto audio output.
  • Another participant challenges the clarity of the initial question, asking for the intended outcome and expressing skepticism about the feasibility of the proposed method.
  • A participant mentions a past experience related to a modified FM transmitter and expresses a desire to explain a phenomenon they observed, hinting at a connection to their current inquiry.
  • Concerns are raised about the legality of transmitting on frequencies used by local broadcast stations, with a suggestion that the participant's previous transmitter may have been confiscated rather than stolen.
  • Some participants assert that RF signals and audio signals are not inherently connected without the use of specific equipment like radio transceivers.

Areas of Agreement / Disagreement

Participants generally express confusion about the initial question, indicating a lack of clarity and consensus on the topic. Multiple competing views remain regarding the feasibility and legality of the proposed methods.

Contextual Notes

There are unresolved assumptions regarding the technical capabilities of the speaker and its potential role as an antenna. The discussion also touches on the implications of transmitting on occupied frequencies without clear resolution.

smokingwheels
Messages
69
Reaction score
0
Can you use a speaker to influence a FM analogue radio transmission no matter how small?
The speaker and antenna where about 2 m apart.
The PC has an audio AMP added in of 20 W.
see
setup_zps45e0e71a.png

Drawing not to scale.
 
Engineering news on Phys.org
your questions really don't make much sense

what are you trying to achieve ?
 
Thanks for the reply.

davenn said:
your questions really don't make much sense
Its just some thing I need to know is possible.
For example if you superimposed the FM transmission on the audio output would the speaker act in some small way as small antenna?
davenn said:
what are you trying to achieve ?
"A Cosmic Radio Transmitter"?. Turns Audio into a beam of light.
A modified/hardwired into a PC a Jaycar Kit Micromitter stereo FM from Silicon Chip Magazine Dec 2002.
Some sort of explanation to what I saw happen one night in 2005?
I made a YouTube video of what I saw one night, Will post link if needed.
Have started a Forum about it but still filling out info from 10 years ago my base transmitter was stolen 2 years ago and now conflicts with local broadcast station.

Hope that helps.
 
smokingwheels said:
For example if you superimposed the FM transmission on the audio output would the speaker act in some small way as small antenna?

An antenna for what ?, it isn't connected to the input of a receiver
smokingwheels said:
A Cosmic Radio Transmitter"?. Turns Audio into a beam of light.

know of no such thing

turning audio into light is easy ... feed an audio signal to a LED ( light Emitting Diode), or other light globe
smokingwheels said:
10 years ago my base transmitter was stolen 2 years ago and now conflicts with local broadcast station.

Well transmitting on other people's frequencies can get you into LOTS of trouble with the authorities

was it really stolen, or was it confiscated ?Dave
 
  • Like
Likes   Reactions: smokingwheels
I'm with Dave on this one. Your questions don't make much sense. RF signals and Audio signals are not physically tied, except through the use of radio transceivers...
 
Can I take a week or so to create my forum then you might have a better idea of what I am talking about?
 
smokingwheels said:
Can I take a week or so to create my forum then you might have a better idea of what I am talking about?

Sure. But when it's ready, please start a private conversation with me so I can check it out. We do not allow linking to websites that are not mainstream science. I will close this thread here now.
 

Similar threads

Minimum Frequency of FM Data / Catastrophic Error Scenario?
  • · Replies 68 ·
3
Replies
68
Views
6K
Radios, Radio Antennae, Reception, Transmission
  • · Replies 6 ·
Replies
6
Views
5K
Cell Phone Tower Communication: How Does it Work?
  • · Replies 1 ·
Replies
1
Views
3K
Wired USB devices shown to lose power due to RF interference
  • · Replies 2 ·
Replies
2
Views
4K
Undergrad Why an antenna cannot receive analogue baseband signal of 0-4000Hz?
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Reflection and transmission of waves in a medium of nonuniform density
  • · Replies 10 ·
Replies
10
Views
3K
Audio/Video Audio Streamer for Hearing Aids
  • · Replies 7 ·
Replies
7
Views
3K
Can Short Pulse Bandwidth Limitations Be Overcome in Radio Transmissions?
  • · Replies 16 ·
Replies
16
Views
3K
COVID Medical Science, Medical Ethics, COVID-19
  • · Replies 21 ·
Replies
21
Views
4K
Modern Digital Audio: Understanding Dither and Oversampling in Hi-Res Age
  • · Replies 17 ·
Replies
17
Views
6K