deltamaster
Middletown, New york
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deltamaster wrote:What is the average range of the digital signal?
All I want to know is if anyone can answer this question.
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SCVJeff
Santa Clarita, CA.
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pulsar wrote:If y'all will allow me, I'll add a simple-minded comment.
TV signals are considered to be "line-of-sight" signals. The taller either of the two antennas, transmitter or receiver, the further the receiver will be able to "see" the transmitter.
Tom Right... The whole idea is to get away from obstacles. But when you do encounter them visible or not, often the cure is to move the antenna around. If it's on the ground, sideways, through a tree, or X-polarized, often that path never moves.
wny_pat: 27MHz behaves nothing like VHF and up. It's not susceptible to upper inversion anomalies (skip, etc.)or most atmospheric noise. It is also not susceptible to local multi-path reflections causing the signal to show up where you might not expect it, and that's the entire point.
* This post was
edited 07/27/10 06:14pm by SCVJeff *
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SCVJeff
Santa Clarita, CA.
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deltamaster wrote:deltamaster wrote:What is the average range of the digital signal?
All I want to know is if anyone can answer this question. The answer is no. It depends on terrain, power, antenna radiation pattern, antenna height, weather,etc. Likewise on your end: location, height, antenna, all make a difference.
But you can go HERE to TV Fool.com and get a theoretical calculation of what to expect, but it's not a given as there is no way to calculate the city that's in the way, whether there are leaves on the tree that's in the way, a reflection off a skyscraper or grain elevator within a few miles, or if the signal is being ducted down a canyon and so destroyed by the time it hits the TV. The formula knows about the transmitter from data supplied by the license, and can make assumptions on the viewers end based on your input.
OBTW- Many of the stations across the country are in the middle of their DTV "Maximization" build-out, so things are still slowly getting better.
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deltamaster
Middletown, New york
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Thanks for the info about TV Fool.
So it seems from what you state here that digital transmission is much like WIFI transmission in that there are many things that will interfere with the signal that might not have been (as much of) a problem with Analog signals????
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SCVJeff
Santa Clarita, CA.
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deltamaster wrote:Thanks for the info about TV Fool.
So it seems from what you state here that digital transmission is much like WIFI transmission in that there are many things that will interfere with the signal that might not have been (as much of) a problem with Analog signals???? Kinda.. WiFi is almost x4 higher than the highest UHF channel. But, the higher you go in frequency, the more things tend to bounce or be reflected off of objects. If the obstruction was there with analog*, it's there now but digital might tend to be more finicky with the signal.
*- Another catch. a large number of VHF stations have moved to UHF. Even though your TV says 2.1, 4.1, etc. doesn't mean anything. They could have relocated in the band and the signal would now act totally different
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