opposite of an RF Modulator?

On Sun, 23 May 2010 13:27:58 -0700, UCLAN <nomail@thanks.org> wrote:

PlainBill47@yahoo.com wrote:

The best video quality from the DVDR would be via HDMI (or component,
or S-Video, or composite, in that rough order) rather than via
modulated RF (which is often soft and blurry looking) but you'd need
home-run cables from the DVDR and some form of distribution amp to do
these.

Only if you are willing to settle for 'less than analog boradcast
quality signals'. Recall that anyone who compared the quality of the
RF signal output of a VCR to the composite signal quickly decided that
it was worth buying the composite cables. And a component connection
offers even better performance.

Also, unlike others, I do a little research.

Well try reading what is posted instead. It was stated that the best quality
video would be with HDMI, with component, S-Video, composite and RF trailing
in descending order. Correct statement. Not sure how your "boradcast" signals
would differ (if at all.)
It has been pretty well established that the best possible display in

a HDTV is with a Blu--Ray player and an HDMI connection. It goes
without saying that the HDTV must be capable of 1080P performance
(although all intelligent people agree that 1080I is pretty darn
close), with lower resolutions (of both the source signal and the
native resolution of the display) giving poorer results.

What is often ignored is the fact that an antenna that gives a good
signal and a broadcaster that does not limit their signal quality in a
number of ways (IE, broadcasting in 720P) will give a picture that is
ALMOST as good as Blu-ray. The chief deficiency is, of course, that
OTA broadcasts are either 1080I or 720P.

Given the OP's desire NOT to run additional cables, and a desire for
sharing top quality signals with all TVs, it thus follows that he must
use an ATSC modulator for each source and combine them onto the single
coax.

PlainBill

 

[UCLAN]

PlainBill47@yahoo.com wrote:

The best video quality from the DVDR would be via HDMI (or component,
or S-Video, or composite, in that rough order) rather than via
modulated RF (which is often soft and blurry looking) but you'd need
home-run cables from the DVDR and some form of distribution amp to do
these.

Only if you are willing to settle for 'less than analog boradcast
quality signals'. Recall that anyone who compared the quality of the
RF signal output of a VCR to the composite signal quickly decided that
it was worth buying the composite cables. And a component connection
offers even better performance.

Also, unlike others, I do a little research.

Well try reading what is posted instead. It was stated that the best quality
video would be with HDMI, with component, S-Video, composite and RF trailing
in descending order. Correct statement. Not sure how your "boradcast" signals
would differ (if at all.)

It has been pretty well established that the best possible display in
a HDTV is with a Blu--Ray player and an HDMI connection. It goes
without saying that the HDTV must be capable of 1080P performance
(although all intelligent people agree that 1080I is pretty darn
close), with lower resolutions (of both the source signal and the
native resolution of the display) giving poorer results.

What is often ignored is the fact that an antenna that gives a good
signal and a broadcaster that does not limit their signal quality in a
number of ways (IE, broadcasting in 720P) will give a picture that is
ALMOST as good as Blu-ray. The chief deficiency is, of course, that
OTA broadcasts are either 1080I or 720P.

zzzzzzz...

 

*+-I don't know if those outputs are made to drive -multiple- sets.
*+-I believe they are only 1:1.

Ouch. Pet peeve.

I had learned to "design fan out of five", so I had a y-connector
using 2,3,8,20 RS232 pins for terminal and printer to modem. Then in
1983 I got an Epson computer, and they didn't support fan-out of
five. It was more like 150% instead of 500%.

THe Fan out of five equipment was all American made. So I never
bought the "Japanese quality" myth. (My family has been orginal owner
for twenty years each on five USA-made V8 cars built 1960-1980.)


- = -
Vasos Panagiotopoulos, Columbia'81+, Reagan, Mozart, Pindus, BioStrategist
http://www.panix.com/~vjp2/vasos.htm
---{Nothing herein constitutes advice. Everything fully disclaimed.}---
[Homeland Security means private firearms not lazy obstructive guards]
[Urb sprawl confounds terror] [Phooey on GUI: Windows for subprime Bimbos]

 

[Jim Yanik]

vjp2.at@at.BioStrategist.dot.dot.com wrote in
news:htq3v8$a0r$4@reader1.panix.com:

*+-I don't know if those outputs are made to drive -multiple- sets.
*+-I believe they are only 1:1.

Ouch. Pet peeve.

I had learned to "design fan out of five", so I had a y-connector
using 2,3,8,20 RS232 pins for terminal and printer to modem. Then in
1983 I got an Epson computer, and they didn't support fan-out of
five. It was more like 150% instead of 500%.

THe Fan out of five equipment was all American made. So I never
bought the "Japanese quality" myth. (My family has been orginal owner
for twenty years each on five USA-made V8 cars built 1960-1980.)

I believe the outputs are 75 ohm impedance,a coax type transmission
line,that you can't drive parallel multiple 75 ohm loads.
It's not a matter of "fan-out".

Now if you had 75ohm loop-thru inputs like many professional video
units,then you just terminate the end unit in 75 ohms,and it would all work
fine.

--
Jim Yanik
jyanik
at
localnet
dot com