opposite of an RF Modulator?
in [Repair]
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From: PlainBill47 on 24 May 2010 14:26 On Sun, 23 May 2010 13:27:58 -0700, UCLAN <nomail(a)thanks.org> wrote: >PlainBill47(a)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
From: UCLAN on 25 May 2010 00:19 PlainBill47(a)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...
From: vjp2.at on 29 May 2010 00:08 *+-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]
From: Jim Yanik on 29 May 2010 07:50
vjp2.at(a)at.BioStrategist.dot.dot.com wrote in news:htq3v8$a0r$4(a)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 |