http://tech.groups.yahoo.com/group/HDTV-in-SFbay/ The latest HDTV equipment and stations Thu, 24 Jul 2008 02:38:06 GMT Richard Swank http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25501 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25501 If KNBC is not HD already they are working on it as we speak. There might be union issues or the fact that KNBC is moving to the Universal location that is Thu, 24 Jul 2008 02:30:50 GMT Richard Swank http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25500 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25500 KNTV also has that capability if the commercials are available in HD. We now produce local spots in HD if the vendor request it. _____ From: Thu, 24 Jul 2008 02:25:59 GMT Richard Swank http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25499 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25499 It's the a new antenna with V-pol and H-pol radiation patterns built in. We actually feed both sections of the antenna with transmitter outputs. Since we'll Thu, 24 Jul 2008 02:18:45 GMT Richard Swank http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25498 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25498 When we go more V-Pol we will use either higher H-pol gain or more transmitter power. No lower H-pol power. _____ From: HDTV-in-SFbay@yahoogroups.com Wed, 23 Jul 2008 22:24:39 GMT Nick Sayer http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25497 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25497 ... Conceivably. But you can make a broadband antenna for UHF that would have a flat enough SWR curve to cover a healthy chunk of the band without too much Wed, 23 Jul 2008 22:21:24 GMT Nick Sayer http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25496 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25496 ... bother. I ... case. ... Wow. How stupid is that? ... You have my sympathy. Wed, 23 Jul 2008 11:26:23 GMT Francis L. Martin http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25495 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25495 Larry Kenny wrote: "With KNTV going HD with their newscasts, the San Francisco Bay Area might possibly be the first market in the country where ALL stations Wed, 23 Jul 2008 05:03:16 GMT Matthew Kaufman http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25494 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25494 ... Wideband antennas do have less gain than narrowband antennas using the same amount of metal, but the advantages of smaller numbers of antennas on Wed, 23 Jul 2008 03:57:53 GMT Bob http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25493 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25493 ... feed ... A single antenna designed and built for H-Pol and V-Pol that is, with the percentage of V-Pol requested to be included as part of the antenna Wed, 23 Jul 2008 03:44:11 GMT Larry Kenney http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25492 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25492 With KNTV going HD with their newscasts, the San Francisco Bay Area might possibly be the first market in the country where ALL stations are doing their news Wed, 23 Jul 2008 03:42:03 GMT Bob http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25491 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25491 ... A single antenna can transmit H-Pol and V-Pol, one does not need to feed two separate antennas for that. Wed, 23 Jul 2008 03:35:32 GMT Bob http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25490 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25490 ... mask ... I left out the loss of the transmission line. The antenna input power can be a couple or a few kW less than the TPO. The TPO is calculated to be Wed, 23 Jul 2008 03:30:39 GMT epicurusradium http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25489 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25489 ... I meant POLARIZATION not (geographic) pattern changes. I was referring to the polarization pattern -- which I guess is a technical linguistic protocol Wed, 23 Jul 2008 03:22:36 GMT Bob http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25488 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25488 ... mask ... The "higher" and "lower" channels I was referring to are all UHF as the existing shared antenna at Sutro is UHF-only. Wed, 23 Jul 2008 03:14:06 GMT Bob http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25487 http://tech.groups.yahoo.com/group/HDTV-in-SFbay/message/25487 ... There is a small amount of additional loss because of the addition of a station combiner but nothing to write home about. The antenna gain for the type of