VCR Question

Easy. The RCA-jack output is the video signal itself. The coax output is an RF carrier (usually channel 3 or 4 in the US) modulated by the video signal, plus the FM-modulated sound carrier.

That's a no brainer. One of them you put the t.v. on channel 3 or 4 and the other you push the Input button.

Go back to jerking off on Flickr.

Fvck off stupid kid! I asked about the video signal itself; something you wouldn't know.

It's the same video signal. With the video out the pure baseband video is applied to the video amplifier which goes to the tube and the sync seperator or more than likely to a switch which chooses video input from instruction by the set's microcontroller. When you go through the 75 ohm cable, the VCR puts the aforementioned baseband signal, with an FM modulated audio subcarrier, on a TV channel 3 or 4, depending on what you have your output channel set to. This process is called modulation. The television, set to either channel 3 or 4 will demodulate the signal from the IF from the tuner to produce the baseband signal which is applied to the video input switch I just talked about.

Now picture quality wise, most people will agree that the RCA-video input provides a better picture, just like many mp3 player users will agree that using a line input will provide better sound quality then using an FM transmitter.

Carrier, not subcarrier. The sound is not transmited as part of the video. The color signal _is_ on a subcarrier.

I just sent abuse complaint to snipped-for-privacy@comcast.net for responding to a poster that wasn't talking to you which is in other words, SPAM.

I just sent abuse complaint to snipped-for-privacy@comcast.net for complaining about a responder who was responding to a poster that you claim wasn't talking to him which is you say in other words, SPAM.

"William Sommerwerck" wrote in news:JtudnRZ8Ncd0fI7anZ2dnUVZ snipped-for-privacy@comcast.com:

Quite technically, it is. It is just not as "intertwined" as Chroma. Most RF modulators (in the US) have a 4.5 Khz audio oscillator, FM modulated, and summed with the video, which them AM modulates the primary RF carrier. It could be for broadcast transmitters they have actual separate vision and sound trasnmitters.

No, it isn't, in any sense. Sound and video are broadcast at two distinct frequencies.

modulated,

separate

Indeed, they do. If you AM-modulated a 4.5MHz FM sound carrier onto the picture carrier, you'd generate a lower sideband at a frequency outside the TV channel. Not a good idea.