Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!uakari.primate.wisc.edu!aplcen!haven!decuac!shlump.nac.dec.com!delni.enet.dec.com!goldstein From: goldstein@delni.enet.dec.com Newsgroups: comp.sys.ibm.pc Subject: Re: BULLEish on Zenith Data Systems Message-ID: <5505@shlump.nac.dec.com> Date: 18 Oct 89 17:40:26 GMT Sender: newsdaemon@shlump.nac.dec.com Organization: Digital Equipment Corporation, Littleton MA USA Lines: 22 In article <110200016@uxe.cso.uiuc.edu>, mcdonald@uxe.cso.uiuc.edu writes... > >I fail to see where the problem with bandwidth for HDTV lies, other >than with the FCC. There are 81 channels available, 6 MHz each. >Besides - have you ever looked at the spectrum of the air with a >spectrum analyzer? I have - and, except for broadcast bands, CB, ham >bands, and things like taxi bands - there is GOBS of free space. >Vast areas of the upper reaches of the spectrum are completely empty. This newsgroup is busy enough without digressions into HDTV and spectrum managemement! PLEASE! For the record, there are only 67 TV channels in the US: 2-36 and 38-69. There never was a Channel 37 (reserved for radio astronomy) and the channels 70-83 were reallocated to mobile, including cellular telephone, years ago. Much of the "empty space" is reserved for military use, including the huge 225-400 MHz military aviation band. I'm sure that it's a pathetically inefficient use of spectrum, but they've got the power. And in any case, it's not relevant to pc's.