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  #68 (permalink)  
Old 07-01-2007, 06:46 PM
Don Bowey
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Posts: n/a
Default Re: AM electromagnetic waves: 20 KHz modulation frequency on anastronomically-low carrier frequency

On 7/1/07 11:19 AM, in article f68r8s$asb$1@nnrp.linuxfan.it, "John Smith I"
<assemblywizard@gmail.com> 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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