On Tuesday, July 12, 2022 at 3:22:19 AM UTC-5, Freethinker wrote:
On 12.07.22 02:47, Charles Lucas wrote:
On Sunday, July 10, 2022 at 7:49:29 PM UTC-5, Freethinker wrote:
On 10.07.22 23:11, Peter W. wrote:
You are answering increasingly older posts....
And dumping a lot of BS at that!
The Post is older. I saw the date. RF Modulators are not BS! Since you are recalcitrant and bellicose
in your comments about me (and you ticked me off), I will spoon feed you the RF modulator
information, since you want to be confrontational and a jerk! You are being verbally abusive
"Freethinker" and your verbal abuse is an attempt to "cost" me since your thinking is free. I
guess you have to be aware of what's free these days. Click on the link or copy and
paste the link below:
https://thorbroadcast.com/t/rf-modulator
It explains also what a modulator does, for your information. Regardless of how old the original
post is, the answer is still relevant today because we use it TODAY! The reason why they are needed
is to generate a carrier signal as well as to make sure the signal has proper impedance and voltage and/or
proper impedance matching to aid in the proper conversion of the signal. I am telling you about a device
that is an external intermediary to any other onboard device previously spoken of.
Once again...I READ THE DATES! These answers are to benefit posterity and can be archived. The
BS you accuse me of 'dishing out' is being stored somewhere in the Smithsonian too. BEFORE YOU
RUN YOUR MOUTH (via the keyboard), YOU NEED TO REALLY THINK BEFORE you speak! I am actually
here to serve people and give them viable answers, or I would not bother to waste my time. Also, the
original poster had a valid question. Yet, you want to discredit me over what a modulator (RF or otherwise)
or a signal convertor is... as though I know nothing at all. Please! I am not here to make the situation
hotter or to cause trouble, but I will not be bullied by players like you who act like they know stuff and
spend time attempting to discredit others that do know something. I think you could be more productive
in spending your time on something else. Yes, there are many kinds of modulation. Would you like me
to spoon feed you that information and name you several forms of modulation (also, since you judged
me about not knowing about modulation and dishing out BS)?
Since you're so darn perfect, let's see you walk on water, dude; especially since you think you have the right
to come off judging me. Yet, even though we're at loggerheads right now, I will still pray for you. Have a
great day and God Bless You. In spite of the curtness on my part in this response, I still hope to those of
you others who read this post, that you will find the straight information useful.
OK, fair enough, and sorry if I have offended you.
Let me try to move this to a more reasonable and civilized conversation:
You stated "On the other video out to converted HDMI device, I would
suggest a good RF Modulator with HDMI input and than outputs to
composite or to
component video and audio outs."
Here there are a couple of things that are not clear to me:
1) By "On the other video out to converted HDMI device" do you mean the
HDMI to composite or component video and audio converter the OP mentioned?
2) If that's the case, would you please explain how you intend to use an
RF modulator (yes, I know what it is) in this case? As far as I
understand, HDMI is a digital signal, so in order to convert that to an analog signal (and split it between video and audio before doing that)
you have to use more than just an RF modulator: there's a lot of
processing to be done. Or am I missing something?
Or did you mean, once the digital to analog conversion is done, use the
RF modulator "to generate a carrier signal as well as to make sure the
signal has proper impedance and voltage" to then feed to the TV input?
Charles Lucas <
charlesandmilly@gmail.com>
4:33 PM (6 minutes ago)
to sci.electronics.repair
I accept your apology. I apologize for my reaction too. I bristle when in a technical
forum some people act like "typical" customers, although I do not mind being questioned,
for I do not fear being skewered by the nasty words that follow if I am wrong, but
I do like a great conversation as it relates to a field I love and enjoy very much. I
especially love doing my best to serve others while having been given some ability
to do good work and make a living at what I do. I am very passionate about delivering good
quality service and advice that is given. I also refer to other volumes before I state the
information, even though at times, I will indicate an opinion based upon my experience.
Yes, I prefer civilized conversation also and talking done
with reasoning rather than insults, falsehoods, or games. Perhaps, I was not clear.
Actually, you hit on a little bit of both conditions to clarify further- just in different
stages. Let me further explain.
Actually, component video (and audio derived from it is one of those quasi-digital
forms of media, such as S-video) is actually what I consider still analog (although a
higher caliber due to the slightly higher video resolution). So, I call it high resolution
analog signals. The audio is still analog. Coaxial Digital is a low functioning digital signal
for audio signals. This is different from the coax that will be referred to later on in the
explanation because that coax referred to is for audio and video signals with 75 ohm impedance.
So the high functioning analog signal (component video, in this case) actually has to
be combined and upconverted to digital from the analog input sourcing to the modulator
upon input and as accurate to how the audio/video or synced, etc... (and perhaps other
factors not mentioned). After the signal is amplified slightly via a signal amplifier (provided
the impedance is matched) a digital carrier signal had to be introduced (this is a form of digital
modulation) and this is performed following the conversion and these steps to modulate the
wave digitally.
In this process, there is bound to be some loss in the conversion of the signal, which is why
it is suggested that interlaced scan be played (and progressive be turned off) as most devices
cannot support the refresh rate, unless you are dumping the signal into a computer monitor,
which can (as TV's and computer monitors have different forms of horizontal and vertical
deflection, by design). The other thing to keep in mind s that in the upconversion, due to
limits on the signal compression, you can have artifacts or other video output errors, however
if the signal compression achieves the under limit criteria, you'll have a relatively decent video
output.
The signal in this case is converted to HDMI. From the output of the modulator/convertor, you
now have a digital to digital signal transfer. The TV will follow the signal from there and process
it as a digital (converted signal), although the modulator performed the step already but the
electronics inside the TV are doing the processing once again (however, this time through the
digital inputs- HDMI).
You can elect to go through other ways, There's analog to analog (hi level res) to low res. Examples
are component video (RGB) to composite (Y) and then RCA audio to RCA audio- presumed stereo (although
mono or hi-fi will work). Then there is RGB to S-Video, or you can do any of these sources and go to coax.
You can also down-convert from DMI to ay of the above listed media, following the similar rules already
mentioned, except there will be a digital to analog conversion, then the modulation and processing on
the old school analog. In analog, depending on what you do, the signal will be combined for audio video
or you can keep the signals altogether separate. It is how you treat the signals, how they come in, how they
go out, what you do with them- all of these things tie in and factor in to the processing of electronics signals
as previously indicated. Everything matters, even the packaging, the "folds" in the paper, compressed, or
uncompressed in the new world of signal processing.
Additionally, you have to follow special rules with the internet or when transmitting any signal to the
general public. We already talked about most of the rules on receiving signals. I sincerely hope this
discourse clears up any confusion. The signal is still modulated and processed- depending upon what
scheme and method one chooses to use. It is how you treat the signal throughout the path of travel
that is going to result in what you produce in the end as your outcome.
God Bless. Have a great day.
--- SoupGate-Win32 v1.05
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