Posted by JMOR on February 25, 2010 at 07:27:02 from (72.181.166.239):
In Reply to: OT: TV RANT posted by aurora on February 24, 2010 at 20:19:55:
This topic goes around every so often & as with anything you have some happy & some not.
Fact of the matter is, that for 'really' rural folks, you are screXed. The transmitter power is a fraction of what it was as analog, many channels moved up in frequency, which means that the TX & RX antennas must "see" each other as these frequencies are much more line-of-sight (don't bend with the terrain) and the higher frequencies are attenuated much easier by water, as in humans, plants, rain, etc. So, unless you have enough height, clear view w/o obstructions, live close in enough, you will need satellite or turn the POS off. Bottom line is that their grand plan was to use technology to pull the picture/sound out of a weaker signal and this does work up to a point, but when there is almost nothing to pull it out of, no amount of digital signal processing can get something from nothing. Under analog rules, a 2-6 channel could broadcast 100,000 watts, 7-13, 316,000 watts, 14-83, 5,000,000 watts. Pretty clear from that how much more power was necessary to over come the high frequency losses. In my area the 316,000 station is down to 23,000 (same freq), the 5,000,000 stations down to 857,000 & 891,000 & 475,000. Good, even better for some, but nothing for others. Broadcasters would like the greatest viewing audience possible (advertising dollars), but how much is it worth to get a good signal to the last few percent of potential viewers? And it isn't entirely the option of broadcasters to run the maximum power allowed for a given frequency, as now the regulators try to jam more stations closer together in a smaller spectrum space, so power is held down below maximum, depending on interference with adjacent transmitters. Good, even better for some, but nothing for others.
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