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OTA antenna recommendation?

Discussion in 'Local Reception' started by Lord Vader, Sep 15, 2012.

  1. Davenlr

    Davenlr Geek til I die

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    That is an amplified fractal panel antenna. Its a scaled up version of the antenna inside smartphones. They work fairly well for gain with their built in amp, but are utterly terrible for multipath.
     
  2. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    Like so many "amplified" antennas, the gain listed is about 75% [or more] from the amp, and not the antenna itself.

    The size is limiting its "low end". The blade measures over a foot in each direction, so the internal elements are longer than in "that antenna".

    Your "1 to 10", would be what my TV shows as 0-100, but it also shows signal to noise [ratio] in dB, which were the numbers in the article.
    "Figure" noise is the constant, so signal to noise ratio is a sign of how much gain the antenna has.

    Amps are good for cable loss from the antenna to the TV, but if the signal doesn't get picked up by the antenna itself, you can't amplify it and "magically" get it, since the signal and the noise both get amplified.
     
  3. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    What I'd say, you're saying is an eighth wave antenna with an amp, may work, but a quarter wave antenna may not need the amp. ;)
     
  4. Davenlr

    Davenlr Geek til I die

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    A 1/4 wave without amp is always going to outperform any other smaller antenna with an amp, since the amp cannot amp unless the signal is there in the first place, as you know. The benefit of the fractal panels (I used the word gain, when I should have used the word broadband) is that they have a wide frequency bandwidth, and can cover the entire UHF band at once with < 3:1 SWR, whereas a 1/4 wave would only be accurate on one or two channels, and then SWR will rapidly rise. The bow tie is an excellent cross between the two, and for an indoor antenna, would be my antenna of choice. Your bow-tie between plastic sheets being a good example of max gain for size and wide enough bandwidth to be effective.
     
  5. Lord Vader

    Lord Vader Supreme Member

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    Just got the "HD Blade" in today and put it up when I got home a few minutes ago. I've been toying with it to see how it performs. Question--is a glass window worse than a wall when it comes to multipath issues? I ask because I have the ability to affix it to a window that is permanently closed, but I couldn't remember if glass causes problems for such signals like it does for DBS signals.
     
  6. Lord Vader

    Lord Vader Supreme Member

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    Addendum: Got it up high on the wall in the master BR. It appears to be working VERY well. I can get all the subchannels available, including CBS, which has always been a problem.

    My next question--I'm going to order one of these for the living room. It will be connected to an HR20-700. However, I have two HR20-700s in the living room and was wondering if I'd need 2 HD Blades, or if I can go with only 1 and use an OTA splitter.
     
  7. coolman302003

    coolman302003 2014 NBA CHAMPIONS!

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    All you will need is a good splitter. :)
     
  8. Lord Vader

    Lord Vader Supreme Member

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    No amplifier needed? I know there a ton of splitters from which to choose on Solid Signal's site alone.
     
  9. veryoldschool

    veryoldschool Lifetime Achiever Staff Member Super Moderator DBSTalk Club

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    I use my HD blade to feed my TV & my AM21, so I use a splitter, but I also use/need an amp.
    You might try just the splitter and then add an amp if you need.
     
  10. trh

    trh This Space for Sale

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    Your Blade is small enough, move it around and try both locations. Some glass (LowE), has a metalic reflective coating, so that could possibly impact your signal strength. But there are house wraps and radiant barrier roof sheathings that also use a metallic layer that could do the same. But it sounds like you've already found a very good location.
     
  11. jimmie57

    jimmie57 Hall Of Fame

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    After reviewing all the posts I decided to try and relocate my antenna once again. The place I wound up placing it was only about 4 feet off the floor and inside the window sill with the antenna rotated so that it was horizontal instead of vertical like all the pictures show it when it is installed. I now get channels 11 and 13, but just barely by 2 bars and all the others have a 5 to 8 strength.
    I am 32 miles from the towers and this has a range of 25 so it is a good thing that there are no tall building between me and them.
     
  12. Lord Vader

    Lord Vader Supreme Member

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    OK, will do. BTW, do you have any recommendations as to whether a specific splitter is better than others, or would any 2-way or 3-way splitter work?

    Yeah, it looks like I have. It's high on the wall in the corner and seems to be working well right now.
     

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