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Mounting HDTV Antenna to SS Chimney...yay or nay?

Post in 'DIY and General non-hearth advice' started by Scott2373, Aug 14, 2012.

  1. Scott2373

    Scott2373 Member

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    The title pretty much says it all. If there are any tech-heads out there that can offer advice on whether or not this will affect performance of the antenna, please chime in. It just so happens that the chimney is on the same side of the house that the antenna needs to point. The antenna is silver, like the chimney (Exterior double-wall stainless steel) and I felt it would blend nicely. As far as the cable (Triple shield RG-6) is concerned, I don't believe the exterior of the chimney gets hot enough to damage it. Any and all advice, comments or scathing retorts welcome! Thank you!

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  2. Jack Straw

    Jack Straw Minister of Fire

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    Will it be in the way when you clean the chimney?
  3. Danno77

    Danno77 Minister of Fire

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    Shoot, this is interesting. I can't think of a reason not to do it. technically you do come within clearances with that cable and that's against code unless your cable is somehow run with gap between it and the chimney.
  4. Scott2373

    Scott2373 Member

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    The antenna will sit well below the chimney cap, so no, it won't interfere with cleaning. The antenna would mount to the side of the chimney with hose clamp style attachments, not at the top, above the cap. As far as clearances go, I could always use some cable standoffs similar to the ones the utilities use for electrical or telephone lines.
  5. peakbagger

    peakbagger Minister of Fire

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    Some folks used to insist that mounting the antenna on the chimney would "burn: out the elements on the antenna. Physics doesnt agree with them.
  6. Highbeam

    Highbeam Minister of Fire

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    Is your chimney restrained really well? I mean, with some wind, that antenna will be like a sail. My class A chimney is mostly just setting on the ceiling support box with very little lateral strength.
    StihlHead and firecracker_77 like this.
  7. Highbeam

    Highbeam Minister of Fire

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    I built an antenna and stuck it in the attic. Works great. Oh and there is no such thing as an "HD" or "digital" antenna, that's just marketing. Your antenna is tuned for UHF and/or vhf and also for a range, that's pretty much it.
  8. fossil

    fossil Accidental Moderator Staff Member

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    Can you post a photo of the antenna?
  9. firebroad

    firebroad Minister of Fire

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    My antenna has been strapped to my chimney for seven years, no problems yet.

    Attached Files:

  10. firecracker_77

    firecracker_77 Minister of Fire

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    Your chimney could support on of those late 80's satellite dishes no problem.
    firebroad likes this.
  11. Danno77

    Danno77 Minister of Fire

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    yeah, but he's talking about strapping it to a stainless steel run, not some masonry chimney.
  12. firebroad

    firebroad Minister of Fire

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    Forgive me, I was in a jocular mood;)
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  13. Danno77

    Danno77 Minister of Fire

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    they gots creams and powders for that, ya know?
    firebroad likes this.
  14. Scott2373

    Scott2373 Member

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    Here is a pic of my antenna:

    [​IMG]
    It won't be on a mast as shown in this pic, but will be "strapped" to the chimney. Thanks for the replies, so far!
  15. firecracker_77

    firecracker_77 Minister of Fire

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    That doesn't look like it would act as a sail
  16. firebroad

    firebroad Minister of Fire

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    Seriously, I would opt for the mast, just my thoughts.
  17. Scott2373

    Scott2373 Member

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    @ Highbeam: You and I understand that, however saying "HDTV" gives people a better idea of what the antenna looks like, rather than imagining something like an old aerial with radials pointing out in all directions.
  18. blades

    blades Minister of Fire

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    The only thing i see that might happen is a ghosting from reflected signal. That may not be an issue with the digital signals like it was in times past.
  19. fossil

    fossil Accidental Moderator Staff Member

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    We're really not talking about stoves here, so I'm gonna scoot this thread over into the DIY forum (like I should have done some time ago). Rick
  20. StihlHead

    StihlHead Guest

    What he said...
  21. StihlHead

    StihlHead Guest

    Also with a reflecting antenna like the one in the photo you posted, you do not want an added metal RF reflecting stove pipe next to the antennas (we are talking stove pipes here, not masonry chimneys). The antennas are mounted that way to pick up the reflection of the excited metal grid behind it, and specific length RF signals. More metal in odd shapes is apt to distort, amplify or dampen the signal that the antennas are trying to pick up.
  22. homebrewz

    homebrewz Minister of Fire

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    It looks like an omni-directional type antenna. If you mount that on the side of a metal object, like your SS chimney, you'll likely get less signal in one direction.. the direction behind the chimney. On the other hand, the chimney may act as a reflector and you'll get a little bit better signal from stations facing the front.

    Edit: actually, it looks like it may be directional by that screen on the back. Well, maybe try it if you don't mind having to move it later.
  23. firefighterjake

    firefighterjake Minister of Fire

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    Very true . . . I was picturing the "traditional" vaned antenna like I have on my roof . . . which does a fine job of picking up OTA TV signals.
  24. begreen

    begreen Mooderator Staff Member

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    I would put it in the attic first or mount it away from metal objects that might reflect the signal.
    StihlHead likes this.
  25. Highbeam

    Highbeam Minister of Fire

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    The pictured antenna is a UHF antenna. If all of the desired stations are UHF then a better purchase is the DB4 or DB6 that is higher quality but still cheap. "HD" or digital TV is broadcast on both VHF and UHF wavelengths depending on your local stations' choice so there is no reason to differentiate between an old fashioned and an HD antenna, they are the same thing. In my area I need both UHF and VHF so my antenna needed to be capable of both, it is.

    The UHF antennas, as shown above, are fairly directional and do act as a big sail. More so than the VHF antennas that look more traditional with the horizontal beam and many elements branching off. Some antennas can catch both UHF and VHF.

    Older analog and modern digital signals are still recieved and transmitted the same way as they've always been with the same antennas. You just need a TV that can read that type of data.

    OTA TV is a wonderful thing with modern flatscreen TVs. The signal is usually true HD which is much higher quality than the cable company's HD that has actually been compressed. Television has never been so good for us as it is since we switched to OTA.

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