... It's a lot more complicated than that. 8vsb is actually an amplitude modulated signal with 8 different legal "amplitude" steps. At each sampling point, the...
The FCC regulates the amount of radiated power so TV stations on adjacent channels and in adjacent markets don't interfere with each other. What kind of...
... OK, if there is an issue of RF polution I can understand that but what I have been talking about is only a small portion of the total, ie. less than 150kw...
... Um yes, it is an indoor antenna. As I have repeatedly said on this forum, I am 'a renter' - one of many. The antenna I am using is the best indoor...
Hi, I give you a "A+" for making no changes. When I played the Sunday MHz capture of Wallander I discovered that the subtitles were so far below the 16:9 frame...
... I don't know if I'd call it "pollution," per se. It is simply good engineering practice to not use more power than is necessary to achieve the desired...
... VHF propagates better and costs less. ... Try again after they're done fiddling with their antenna. Right now they're transmitting from the auxiliary...
Guys, The RF studies the FCC used to issue power levels are based on replication of analog coverage in KGO's case and needed power to cover the city of license...
I'd like to correct the 8 amplitude steps. Instead the phase of the 10 megahertz AM modulating signal is phase shifted every 45 degrees to indicate a 1 or a...
If you understand the fact that the actual transmitted RF level from a transmitting antenna drops approximately by ½ at every wavelength it travels from the...
Omni directional transmitting antennas are better and do not exhibit weird problems. Yes, they do cost less but they perform better. Why would you give a...
As long as you all are getting technical, it isn't as simple as either of you are saying. The signal starts out as an 8 level amplitude modulated signal. An...
It wasn't so much that we didn't make changes as much as that we ended up in the correct spot with it this time. It was a widescreen film transferred to NTSC...
No that is why it is called 8VSB. VSB is vestical sideband modulation. Lower sideband chopped off. Believe it or not the DTV exciter phase shifts the 10...
... ?! Say what? No, it's 8 levels of amplitude modulation. You run the result through a Nyquist filter that throws away the lower and most of the upper...
... I dunno if I'd hold my breath. UHF/VHF antenna design hasn't really changed all that much in the last, oh, 30 years or so. ... Well, not really. DTV is...
... I'll also throw out there that COFDM succeeded in Europe because it's much easier to make Single-Frequency Networks with COFDM. The European model of...
... 8VSB was developed by Zenith. The main competitor was 64QAM which was proposed by General Instruments. They both developed complete systems. Zenith was...
... Hmm, is that amplitude variations only within a narrow SPECIFIC time window? Maybe that explains the dropouts we get from nearby low flying aircraft. Also...
... to ... to ... Four times the power would be required for COFDM. The transmitter power out would have to be increased by 6dB to maintain the same coverage...
... Does not ABC KGO 7 also serve San Jose? If not who the hell else is supposed to be doing that?? Last I checked the population of the 'south bay' is...
... aircraft. Also stormy weather air turbulence in the signal path? I am close to the flightpath of the medvac helicopters servicing a hospital and it is...
... supposed to be doing that?? Last I checked the population of the 'south bay' is considerably greater than SF. They do but their City of License is San...
... Well pardon me if that sounds rather like NewSpeak - DoubleThink. If that is the rule then the rule should be changed to reflect the real world....
I've got to remember to keep my mouth shut.....I've instructed my wife to shoot me if I don't. KGO digital (Aux antenna) provides SF with the minimum power...
Swank, Richard (NBC U...
Richard.Swank@...
Jul 2, 2009 6:43 pm
27934
ERP is 72 kW on the KGO Aux antenna. ERP cannot exceed 500 kW on the UHF Aux antennas because there are five stations on each of the UHF Aux antennas. ...
So KGO has a higher ERP from the lower AUX antennas. Interesting. _____ From: HDTV-in-SFbay@yahoogroups.com [mailto:HDTV-in-SFbay@yahoogroups.com] On Behalf...
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