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Does it matter if the tv antenna points one way, or 180^ the other?

Discussion in 'Electronic Repair' started by mm, Dec 1, 2009.

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  1. mm

    mm Guest

    Does it matter if the tv antenna points one way, or 180^ the other?

    You guys, especially Dave, have convinced me that I need a better (and
    thus bigger) antenna more than I need an amplified antenna. Does it
    matter if I point an antenna with several elements of different
    lengths to the station, or if I point it the exact opposite direction?
    In my attic, it would be more convenient to do the latter. (I'm too
    old and at least now, too fat to go on the roof.)


    Also, I thought 50 miles was the longest range on level ground for a
    transmitting tower of typical height and an antenna on the roof of a
    two-story house.

    So what about a claim that a Wineguard antenna has a range of 75 to 80
    miles????
    http://estore.websitepros.com/1129733/-strse-159/Winegard-HD-8200U/Detail.bok
    This antenna is rated for low-band VHF and I don't need that, I've
    learned, but it's the mileage claim I am asking about.

    Even this one says: Up to 60 mile VHF range; 45 mile UHF range Don't
    they get that by mounting it on a 100 foot tower or something?
    http://www.radioshack.com/product/index.jsp?productId=3739594
    And isn't the info obsolete because digital transmitters are working
    at lower power than analog did?

    Thanks a lot.
     

  2. Many if not most late model digital format TV receivers have a signal
    strength indicator available via the menus. This would be very useful, I
    would think.

    Mark Z.
     
  3. Guest

    I have to say you are going about this the wrong way. You are
    choosing to mount the antenna in the attic because it's easier. An
    indoor mount also has the advantage of reducing exposure to the
    weather. While this is easier, it has several major disadvantages.
    You have already mentioned one - difficulty in orienting it properly.
    There is another - signal attenuation, particularly at higher
    frequencies.

    Have you considered the possibility you are focusing on convenience
    and ignoring performance?

    As far as antenna range, my parents lived over 60 miles from the
    transmitter and received good signal levels with an antenna that was
    mounted less than 15 feet above ground level.

    PlainBill
     
  4. baron

    baron Guest

    Inscribed thus:
    With all due respect to Bill, what works in one place doesn't always
    work in another.

    An example, Rhonda Valley. Two identical Tv's antenna and cables but a
    common chimney stack. Really good signal reception on one side of the
    stack and next to none on the other. Antenna less than 6 ot 7 feet
    apart at the same hight.

    Solution split the feed from the high signal antenna and feed both sets
    from the single antenna. Which also had the effect of reducing the
    signal improving the picture on both Tv's.
     
  5. GregS

    GregS Guest

    You certainly don't need VHF low, but do you really need VHF high ?
    I only have one station here on ch 13.

    You could also use two separate antennas with a combiner.
    Concentrate on the UHF.

    Milages is highly dependant on height and terrain.
    Height means nothing if there is a mountain in between.
    Its surprsing though, there are some big hills around here, and people
    got by from 30 mi away with hilly terrain on the old TV's.
    Getting rid of shadows on the old TV was the main problem.
    Digital has no shadows but must have a minimum signal to decode.

    greg
     
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