Aces High Bulletin Board
General Forums => The O' Club => Topic started by: loser on December 17, 2003, 03:56:11 AM
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I get home from work today and I am the only person in my apartment building. I sit down at the computer and start working away on some skool stuff and i can hear a radio station playing.
Barely audible but still loud enough that i can tell what song is playing.
Stereo is off, even the speakers are off on the computer.
Anyway, get closer to 5 o clock and the apt building starts to fill up. Too much background noise to hear the radio anymore.
I get up for a drink of water at about 3 am and decide to try it out again. Boot up the computer and the instant the monitor turns on, the sound starts again.
I cant really pinpoint where the sound is coming from, but im sure it is not the speakers (which are beside the monitor)
Best sound i can get is by tilting the lamp next to the monitor and speakers to allow the shade to act as a sort of bell. Still barely audible but you can make it out.
Weirdest part is...it keeps playing the same 4 or 5 songs, but it is definately a radio station because they talk in between the songs.
Worst part is...the g/f hsa bad ears and cant hear it at all.
At first i thought i was just overtired or something but after some sleep and the apt building quieted down i was able to replicate it.
So what gives? Can CRT monitors give off some sort of radiation that can pick up radio signals? and if so how is it making it audible?
This is by far the strangest thing i have ever experienced.
Anyone know about radio or monitors and why this would happen?!?!?!
Oh yeah, i have a daytek 953DF that i got just over two weeks ago and havent really used it much unitl recently. Never experienced this with the old monitor.
:eek:
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If you have a new computer, it can be that one. Same thing happened to me with my office computer (a new hp compac) apparently there must be some sort of internal speaker inside the computer box, and whenever there are no external speakers plugged in, that internal speaker activates. It deactivates when you plug in external speakers, or when you use the sound manager to turn off teh sound.
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PC beeper is a good possibility or maybe the case itself?. My father had an electric piano in the '70s and it sometimes received ATC when it was turned off. He even had to move it to a different room because it was so annoying.
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When I was living in Swindon, UK and had purchased a new set of speakers, i'd catch a german opera radio whenever i turned the speakers off. it was odd, and didn't help me apreciate opera.
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I blame Canada.
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You'd be surprized what will pick up radio signals..I have a octave/fuzz box for guitar that picks up radio through a guitar amp.
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I had the same when i lived rather close to the CFRB transmssion tower, the speakers would pick up signals.
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I heard somewhere that some people could pick radio transmissions in their fillings.
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That is very strange and there must be a good logical reason (unless its your imagination) but in order for something like that to happen, assuming its being caused by some strange radio wave anomoly, you would still need a radio reciever unit of some sort to convert the raw analog signals to your speaker signal or some sort of speaker in this case your monitor? The chances that your computer monitor can convert a raw radio signal to audible coherent noise is slim.
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One word: lithium.
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Originally posted by MrCoffee
you would still need a radio reciever unit of some sort to convert the raw analog signals to your speaker signal or some sort of speaker in this case your monitor
All you need is an amplifier and a wire (or cord) that acts like an antenna..I have bootleg recordings of Hendrix where his Marshall stacks pick up walkie talkie Tx's from cops who are trying to "controll" the rowdie crowd.
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You have an unshielded low voltage input somewhere in your system, mabey a line-in jumper or just poorly designed sound card. I would disconnect the pc speaker.
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Originally posted by GScholz
...Although I must admit that the German opera singing ones are weird ... prolly high on something.
I refute this ! the only narcotic i was able to find in UK were bitter and Guiness !
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zmeg is right..Unsheilded wire probably culprit
.
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Try a tin foil hat.
:D
dago
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I saw this episode of Gilligan's Island. I think the professor beat Gilligan with a hammer made from a coconut to stop it. You should get the biggest hammer you can find and beat your monitor until it stops.
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a few years ago my little brother was battling a bout of insomnia. he hadn't been able to sleep for days and was up playing his guitar at about 3am (electric with the small headphone amp).
out of the blue the thing picks up the cb signal from a truck going down the road, scared the crap out of him to have his guitar yelling at him at 3am.
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back in the 50s they had mega powerful radio stations in mexico near the texas border. i dont remember the wattage but it was really insane to the point of if you visited and you had fillings. near the transmitter you really could hear it in your head ( as he did). and he said the beds in the hotel miles away also picked it up. audbly in the room.
from his description was like a tourist attraction as everyone knew and listend to the stations and travel to mexico was quite common ( i think they covered the whole us market. since they had uncontroled in wattage unlike amrican stations.)
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dunno why but if my pc speakers are "on" but pc is off and a cop drives by i hear the police band blaring through the speakers.
home stereo (component system) does something weird too...
there are 4 speakers hooked up and the right front bose speaker plays a local radio station very quietly if the stereo is on and set to "video". you can hear the music between commercials and stuff.
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your bose system has a internal leak.
sell it to someone and buy a real stereo. honestly
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Originally posted by lord dolf vader
your bose system has a internal leak.
sell it to someone and buy a real stereo. honestly
only the speaker is a bose...
components are dennon.
this has only started in my new apartment. for 7 years i had this equipment and never had a problem. in the move i packed it in it's original packaging (i save ALL styrofoam and boxes from any electrical equipment) and moved it in my car. no josteling i only moved 1 mile.
if something did go bad its rather odd that it just all of a sudden started.
could it be the tv vcr or dvd player it's hooked to? those are roommates and jerry rigged with an a-b switch because well they are all missmatched POS.
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Originally posted by Saintaw
I refute this ! the only narcotic i was able to find in UK were bitter and Guiness !
You didn't go out much did ya.
How do you find a dealer in Swindon? Throw a brick I should think.
(http://img.villagephotos.com/p/2002-9/48257/20029211530-0-Swoop.gif)
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Originally posted by Saintaw
When I was living in Swindon, UK and had purchased a new set of speakers, i'd catch a german opera radio whenever i turned the speakers off. it was odd, and didn't help me apreciate opera.
LOL german opera in UK LOL
it must be some rest of war machinery :D
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This is weird but not improbable.....we used to call this PFM when I was in the RADAR biz. I'm just wondering what is actually demodulateing the signal. A bare wire will work as an antenna, but like somone said You'd still have to demodulate the "audio" from the carrier signal. To do that you'd need some sort of clock signal or crystal. Like i said PFM.....Pure ***** Magic
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Yeah, I can plug in my headphones into my computer and if I have nothing going to produce sound I can hear a radio station in the headset..
Come to think of it, maybe it's just the usual voices in my head...:P
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Originally posted by Sundiver
Yeah, I can plug in my headphones into my computer and if I have nothing going to produce sound I can hear a radio station in the headset..
Come to think of it, maybe it's just the usual voices in my head...:P
Ever figure out what turned on your kids toys, even the ones without batterys?
I would move if I was you?
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LOL Come to think of it not a bad idea. ;) No we didn't the only "rationale" explanation I still have is some of the heavy military traffic passing overhead. We've had alot of AWACS and Hawkeyes doing touch and goes recently.
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( i think they covered the whole us market. since they had uncontroled in wattage unlike amrican stations.)
they didnt have a limit in the usa back in the 1950's either,,i guess some cali stations were pushing 600,000 watts of power,,and you could hear them all the way to the north pole!!,,hehe but it would cover up so many stations all the way past alaska,, they had to put restrictions on watts<~~atleast thats what i heard on art bell on the way home late from work,,lol
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When my daughter got braces she'd open her mouth and we could hear the Rush Limbaugh show- and it was loud, too, so it sounded like she really was Rush.
Of course her liberal teachers flunked her out for Rush's conservative viewpoints, and she got kicked out of glee club and the only boys who liked her were right wing nutburgers, but once we got the braces removed she returned to normal, whatever that is....
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Originally posted by Gunslinger
This is weird but not improbable.....we used to call this PFM when I was in the RADAR biz. I'm just wondering what is actually demodulateing the signal. A bare wire will work as an antenna, but like somone said You'd still have to demodulate the "audio" from the carrier signal. To do that you'd need some sort of clock signal or crystal. Like i said PFM.....Pure ***** Magic
An "envelope detector" is a very simple AM demodulator. In fact, it consists of just three components (i.e., a diode in series with a parallel resistor/capacitor combination) that could well be found on some circuitry in a monitor, on a motherboard, or on plug-in card. With an envelope detector, the signal extraction is done without downmixing the signal, so no crystals or frequency tuning circuitry (e.g., tank circuit) is needed. There may be a similarly simple way to extract the modulating signal from an FM signal, but I'm not aware of any. I know that there are methods for receiving FM signals without tuners, but I don't know of any as simple as an AM envelope detector.
If the radio station is broadcast in FM, I suspect that what you've picked up is crosstalk over your telephone line that originates with a baseband feed from the radio station to its broadcast point. This happened to my parents all of the time: they could hear the signal of a station that was broadcast near their home over their phone lines. It was FM and I'm sure that it was not being demodulated. Thus, I suspect baseband crosstalk. I experience a similar thing at home when I have my CD player running at the same time I am watching TV. Audio from both devices feeds the same amp, and I get crosstalk due to the proximity and poor shielding of the cables. That is, I can hear the CD player while I am listening to the TV signal through my amp. In your case, I'd suspect that you're picking up the crosstalk through your modem and the sound is coming from the modem speaker (the same thing that makes the annoying noise when your modem negotiates a connection with another modem).
Just a guess.
- JNOV
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Thats interesting. What of the signal iself an FM wave anomoly of some sort. That would change things. Anyways, demodulator and "envelope detector", learn something new everyday.
:aok