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#1
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Radium wrote:
.... You miss the simple point, the dc is the carrier ... instead of dc, you could put a 1 hz signal on the line and modulate it with your voice, indeed, you can put a 30 hz signal on the line and modulate it with your voice--if you can tollerate a bad 30 hz hum! But, who knows, perhaps you are tone deaf to the 30 hz hum and would like it ... JS |
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#2
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On 6/30/07 11:25 PM, in article , "John Smith
I" wrote: Radium wrote: ... You miss the simple point, the dc is the carrier ... instead of dc, you could put a 1 hz signal on the line and modulate it with your voice, indeed, you can put a 30 hz signal on the line and modulate it with your voice--if you can tollerate a bad 30 hz hum! But, who knows, perhaps you are tone deaf to the 30 hz hum and would like it ... JS But you miss the basic point...... The topic was Amplitude Modulation. |
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#3
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Don Bowey wrote:
[pure crap!] "In the mid-1870s, a form of amplitude modulation—initially called "undulatory currents"—was the first method to successfully produce quality audio over telephone lines. Beginning with Reginald Fessenden's audio demonstrations in the early 1900s, it was also the original method used for audio radio transmissions, and remains in use by some forms of radio communication—"AM" is often used to refer to the mediumwave broadcast band (see AM radio)." Taken from this URL: http://en.wikipedia.org/wiki/Amplitude_modulation And, please read the WHOLE PAGE before making a larger idiot of yourself ... JS |
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#4
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On 7/1/07 11:19 AM, in article , "John Smith I"
wrote: Don Bowey wrote: [pure crap!] "In the mid-1870s, a form of amplitude modulation‹initially called "undulatory currents"‹was the first method to successfully produce quality audio over telephone lines. Beginning with Reginald Fessenden's audio demonstrations in the early 1900s, it was also the original method used for audio radio transmissions, and remains in use by some forms of radio communication‹"AM" is often used to refer to the mediumwave broadcast band (see AM radio)." Taken from this URL: http://en.wikipedia.org/wiki/Amplitude_modulation And, please read the WHOLE PAGE before making a larger idiot of yourself ... JS I didn't read the link, as it has nothing to do with this string. You posted to Radium's question about Amplitude Modulation, saying that on a telephone line, the DC voltage is the Carrier and the microphone current (or voltage if you prefer) is the modulation. Now THAT is un-pure crap and it is what I responded to and which you deleted in this post hoping to look better, which you don't. I already conceded to your ignorance, so you really didn't need to post more, but thanks for the opportunity to help. |
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#5
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Don Bowey wrote:
[more crap!] Oh, that explains it, your understanding of amplitude modulation is: AM = Black Magic. ROFLOL! JS |
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#6
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On 7/1/07 11:53 AM, in article , "John Smith I"
wrote: Don Bowey wrote: [more crap!] Oh, that explains it, your understanding of amplitude modulation is: AM = Black Magic. ROFLOL! JS OK you stupid ****, I'm almost out of patience with your ignorance. I was hoping you might learn something, but I see that is unlikely. AM is a process of frequency multiplication. Now you tell me where you think such multiplication takes place on a phone line, and I'll follow-uo by telling why you're full of crap. SIMECS! |
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#7
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Don Bowey wrote:
AM is a process of frequency multiplication. Now you tell me where you think such multiplication takes place on a phone line, and I'll follow-uo by telling why you're full of crap. SIMECS! It is all right before your eyes, if you can't see it by now, forget it .... perhaps at a later date. I know your frustration, I have seen the mentally handicapped attempt to deal with the real world and it end only in frustration ... perhaps a change of meds is in order ... JS |
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