Interestingly, we see the same thing on our 15" analog TV down here in Suncoast Florida. So, I suspect some of the problem is on network feeds, rather than an 8VSB OTA problem. Al ----- Original Message ----- From: "Mark Schubin" <tvmark@xxxxxxxxxxxxx> To: "Open DTV Forum" <opendtv@xxxxxxxxxxxxx> Sent: Tuesday, December 18, 2007 12:49 PM Subject: [opendtv] From Ed Reitan > John, > > I have told you of my futile experiments with ATSC HDTV > reception. I was there from the beginning with ATSC since 1999 > and have continually found reception with blocking (aka tiling) > and complete drop out artifacts to be difficult if not possible > to achieve. This was through the first generation Panasonic > boxes, my second generation Sony KD-34XBR2 set, and my latest > third generation Sony KD-34XBR960 Super Fine Pitch™ XBR - the > last great CRT HDTV receiver (they went to a less resolved > Trinitron in the 750). > > With the KD-34XBR2 receiver, I had a 34 foot high Winegard > antenna on a two story building in Westwood, and unless I turned > the antenna in azimuth directly to Mount Wilson, I would have > occasional blocking. > > With every generation of ATSC receivers and continual problems, > they have repeatedly said the "next generation" of chips would > solve the problem. Sinclair argued at the start of ATSC to > shelve it and adopt COFDM modulation - they were accused of just > dragging their feet to save new transmitter cost, but I am > beginning to suspect they were right. But the problem has still > not been solved. > > So on nights when the cable has problems, I tune my KD-34XBR960 > to direct reception and use a UHF loop. I can see the red lights > of the four Omaha towers with my eye out the window from the > receiver - but I still get blocking and complete drops outs. The > system just does not work, except with a perfect signal. > > Maybe someone from Zenith, on the distribution, has some comments > regarding the problem. > > Ed Reitan > ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.