quantum Posted July 22, 2004 Report Share Posted July 22, 2004 Most people want a clear sounding reception on their radio, however I do not for obvious reason. How can I demagnitize the reception of radios. Any comments would certainly be helpful. Quote Link to comment Share on other sites More sharing options...
audioguru Posted July 22, 2004 Report Share Posted July 22, 2004 Hi Quantum,You don't say what your radio sounds like to make it not "clear sounding".You also don't say if it is AM or FM.Your radio may have a cheap, tinny-sounding little speaker, or have a simple circuit that picks-up interference. It may have a poor amplifier with lots of distortion. What is it?You degauss (demagnetize) a cathode-ray-tube in a colour TV, not a radio! If you hold a magnet near a colour TV, then its colours get distorted. Hold that magnet near a radio, then nothing happens!Try demagnetizing the radio's speaker magnet and see what it sounds like. Quote Link to comment Share on other sites More sharing options...
quantum Posted July 22, 2004 Author Report Share Posted July 22, 2004 I am trying to make a radio sound bad on purpose indirectly, such as with electromagnetic waves. I just want tot see if I can make a radio sound "fuzzy" and distorted. Not make it sound better. Quote Link to comment Share on other sites More sharing options...
quantum Posted July 22, 2004 Author Report Share Posted July 22, 2004 I just misused the wording of demagnetized. I'll change the subject wording to distort reception of radio. I would want to distort the sounds of a fm radio, if possible. Quote Link to comment Share on other sites More sharing options...
audioguru Posted July 23, 2004 Report Share Posted July 23, 2004 Quantum,You want to MAKE a radio sound distorted and fuzzy???? Huh? ???FM radios have a specification called Capture Ratio, which allows them to lock onto the strongest signal and ignor any weaker signals including noise. That is one reason that they sound so good, and why it would be difficult for you to cause interference unless you use a high-power radio transmitter that is up close to your radio. Then the radio will lock onto your interference and ignor the broadcast.That's illegal in most countries.Did you demagnetize your radio yet? ;D ;D Quote Link to comment Share on other sites More sharing options...
quantum Posted July 23, 2004 Author Report Share Posted July 23, 2004 Ha Ha. Yes I won't to distort the signals of a radio. (Don't Ask) ;DI thoght something could distort the radio signals, because I've read in a book that if your created static by wires attached to the battery terminals and rub them on a metal file, that it would make the radio sound like static. Quote Link to comment Share on other sites More sharing options...
audioguru Posted July 23, 2004 Report Share Posted July 23, 2004 Quantum,Yeah, I know. Your neighbours' radio bothers you and you want to mess it up for them. Right?Creating sparks makes large, low-radio-frequency AMPLITUDE variations, which causes static in AM (Amplitude Modulation) radios.FM (Frequency Modulation) radios ignor amplitude variations, and interference from the sparks doesn't reach their very-high-radio-frequency. Quote Link to comment Share on other sites More sharing options...
quantum Posted July 23, 2004 Author Report Share Posted July 23, 2004 If I would have none better, I would thought that you live right next door. You are creeply right. It's not your normal neighbors, there kids that love to blasts their rap loudly in their backyard. So thought there's gotta be a way, but I quess you can't. :-[ Quote Link to comment Share on other sites More sharing options...
MP Posted July 24, 2004 Report Share Posted July 24, 2004 I would build an FM transmitter and tune it to the same station they are blasting me with..... ;D ;DMP Quote Link to comment Share on other sites More sharing options...
audioguru Posted July 24, 2004 Report Share Posted July 24, 2004 Quantum,Then what will you do if they play MP3s, CDs, cassette tapes or vinyl records? Or if they go LIVE? Or Kariokee?I think that Rap is just yapping to a big beat. Sometimes it rhymes.Just be thankful that they don't play bagpipes!Don't you have noise laws down there? I was at the St. Louis arch one time, near you? Quote Link to comment Share on other sites More sharing options...
quantum Posted July 24, 2004 Author Report Share Posted July 24, 2004 You guys are hilarious.I'm probably exagerating about how loud it is. he heBut just the thought of turning devices off through the air sounds quiet intresting.Thanks for your ideas.MP, do you know of any circuit that can tune in to the mega frequencies? Quote Link to comment Share on other sites More sharing options...
MP Posted July 25, 2004 Report Share Posted July 25, 2004 quantum, I do not have such a circuit in my archives, but I would recommend a google.com search.I am sure something will come up from it. www.discovercircuits.com also has quite a large schematic library.MP Quote Link to comment Share on other sites More sharing options...
quantum Posted July 25, 2004 Author Report Share Posted July 25, 2004 MP, I just found a schematic for a ultra simple radio transmitter, that is suppose to range from 88 to 108 megahertz. Awesome.http://www.aaroncake.net/circuits/fmtrans.htmHow does the capcitor determine the frequency, I know vaguely of this. Quote Link to comment Share on other sites More sharing options...
hotwaterwizard Posted July 25, 2004 Report Share Posted July 25, 2004 My father use to use an RF signal Generator to Mess with me when I was playing my Radio too loud. He would block the signal and all I could get was a tone. Quote Link to comment Share on other sites More sharing options...
quantum Posted July 29, 2004 Author Report Share Posted July 29, 2004 I figured out my radio problem, as I once told you at http://www.aaroncake.net/circuits/fmtrans.htmI built the circuit, and it did not work. My first estimate is that the transistors that I used does no cover the range that I want for. 300 megahertz. By the way, for what reason are the transistor.http://www.cedmagic.com/tech-info/data/nte123a.pdf Quote Link to comment Share on other sites More sharing options...
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