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Join Date: Sep 2007
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Propagation of digital TV signals

07/15/2008 7:35 PM

I live in a weak or shadowed air wave television signal area for use of conventional antennae for TV stations, and have had to resort to cable. Will the transition to digital television signal transmission change the way signals propagate, i.e. is there a chance that air wave signals to my home will get stronger?

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Guru
United Kingdom - Member - Olde Member!! Engineering Fields - Instrumentation Engineering - New Member

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#1

Re: Propagation of digital TV signals

07/16/2008 7:23 AM

No.

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#2

Re: Propagation of digital TV signals

07/16/2008 11:35 PM

I have researched this subject a little which will happen I think in Feb of next year and am under the impression that the signals will be weaker because the analogue stations now are 6 MHZ wide and the digital will be 1 MHZ wide. They can get maybe 6 times as much info..i.e. 6 stations in the space that the analogue one took. Now the analogue transmitters used up to 316 K watts and supposedly the digital will broadcast with only 100 k watts. I think maybe they really do not know what the left hand is doing when the right hand is hard at work.

I am a retired ET in electronics and all this is sort of new to me. I worked at a TV station as assistant Chief Eng using 316 K watts on Ch. 12. I am 82 years young and retired in '88.

I am now in the process of constructing a bunch of TV antennas to try to compensate for the supposedly lower power. I have just about completed a 6 elament yagi for ch 7 which is about 27 miles from me. I also live in the pine tree section of SE Texas which blocks UHF pretty good.

A good place to start is to Google "Digital TV". The FCC took 14 analogue chanels off the top of the UHF TV chanels. The space will be used for Cel Phone I think.

John SE Texas

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