From 47CFR,CH. I, 10-01-99 Edition=20 Subpart E Television Broadcast Stations Part 73.686 Field Strength Measurements (b) (2) Measurement Procedure "All measurements shall be made utilizing a receiving antenna=20 designed for reception of the horizontally polarized signal=20 component, elevated 9.1 meters (30 feet) above the roadbed." -----Original Message----- From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx]On Behalf Of Bob Miller Sent: Wednesday, March 02, 2005 1:27 PM To: opendtv@xxxxxxxxxxxxx Subject: [opendtv] Re: Digital radios outstrip analogue What is the history of the 30 ft mast test? I have thought it was a=20 standard FCC test during analog years. Was it part of the design of 8-VSB? Did the FCC incorporate words to the = effect that a 30 ft mast test was integral to whether a modulation was=20 acceptable? I have always thought it was. Bob Miller Craig Birkmaier wrote: >Perhaps I was reading too much into your emoticon. > >I thought that you were making a tongue--in-cheek statement about the=20 >inability of ATSC to deliver bits to mobile/portable devices. > >The 30 foot mast test was perhaps the most compelling evidence that=20 >the ATSC system was not designed to replace NTSC, but rather to=20 >protect it. The fact that the FCC continues to support the absurd=20 >notion that DTV is a fixed service for fixed antennas says everything=20 >we need to know. > >Obviously, a properly designed terrestrial broadcast network would=20 >ONLY need an antenna on a 30 foot mast for the folks who live=20 >significant distances from the market from which they are trying to=20 >receive the broadcasts. And this assumes that there would not be gap=20 >fillers to provide them with the same ease of reception as the people=20 >who live in urban/suburban areas. > >Regards >Craig > =20 =20 ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at = FreeLists.org=20 - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word = unsubscribe in the subject line. ---------------------------------------------------------------------- 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.