Wireless Antenna Concealment Association?

Discussion in 'Design, Development and Standards Discussions' started by SMcLernon, Jan 18, 2012.

  1. SMcLernon

    SMcLernon Friend of the Community

    "What the wireless concealment industry needs now is its own industry association to set standards and guidelines for design, fabrication and installation. Yes?"
  2. David Lehrer

    David Lehrer Industry Observer

    Interesting question. A standard could be set up for material specifications, especially regarding monopine branches. Many of them are atrocious and give the concealment industry a bad name. Some after a period of time look like a lime-colored eyelash brush.

    I would imagine that the ones that look good on a structure have a value added cost to them, but unfortunately that's not always the first consideration of a carrier or tower owner.

    Some of the legacy trees turn off zoning officials and rightfully so.

    When the question comes up at a hearing, "Will your tree lose its branches and UV fade away," the answer will certainly be no.

    It would be difficult for the official to ask for a bond of some type to ensure that the installation will mostly maintain its original faux branches and/or bark since that could be seen in conflict with the communications act by adding additional roadblocks.

    However, if there was an industry accepted standard, they would be wholly in their right to require the carrier to certify that his - whatever it might be - meets industry standards.
  3. SMcLernon

    SMcLernon Friend of the Community

    Good comment. Ah the tree, yes that poses a real challenge because there are many pieces to it and they're all exposed to the elements not mention the occasional bird. I think starting with the right materials is essential to longevity, but in a highly competitive market such has ours long term ownership costs are not always a priority. As a result, subsititions are made or as it popular to say these days, "the can gets kicked down the road."
  4. technocrat

    technocrat First Time Poster

    What is the dBm loss maximum allowed for panels? I thought it was 1.5. Isn't there a standard for that like ANSI/TIA? If not, who sets the acceptable limits?
  5. SMcLernon

    SMcLernon Friend of the Community

    The loss requirements are basically: the lower the better. Our average product material rarely if ever exceeds a .5 db loss between .8 and 2 GHz. In other words, when they say want RF transparent material they mean it so we frequently test new material to drive those numbers as low as they can go.
  6. TBell

    TBell Industry Observer

    Also need to consider the shape / location / dielectric constant of anything placed in front of the antenna. I saw a site many years ago where each panel antenna was placed inside a fiberglass tube the size of a small trash can. The dB's loss due to insertion loss and reflection caused by the fiberglass was acceptable. The problem was that the material acted like a lens and changed the radiated beamwidth of the antenna from 65 degrees to 120 degrees! That changed the gain by 3 dB, cutting the effective cell radius in half!
  7. towerman

    towerman Friend of the Community

    I agree Sean that the lower the better. But carriers will not pay for the cost to keep it lower. You may have a .5db loss, but if it's higher from your competition the buyer is not going to say no. That's why there should be a standard. You're on the right track but who is going to say yes to standards if it will cost them more?
  8. WECF0912

    WECF0912 Friend of the Community

    Regarding the Carrier's perspective, what would you recommend as regulatory/standard type requirements for the design? For example, would applicable requirements of TIA-222 or similar, ASTM E84/UL for Fire Rating, NEMA or GR487 (environmental/chemical testing), ASTM G154 for UV apperance, etc.
  9. Wireless Estimator

    Wireless Estimator Administrator Staff Member

    Below are the sections of TIA-222G. Except for considering the flat plate loading of a concealment frond or any other faux attribute. I don't believe there is much in the standard that deals directly with concealment, but your other ASTMs and NEMA standards certainly would be helpful as well as applicable construction standards.


    HISTORY 7

    OBJECTIVE 7

    SCOPE 7

    1. GENERAL 8

    1.1. Definitions 8

    1.2. Abbreviations 12

    1.3. Symbols and Notations 12

    2. CONSTRUCTION CONSIDERATIONS 15

    2.1. Scope 15

    2.2. Rigging Plans 15

    2.3. Construction Equipment 15

    2.4. Lifting Devices 16

    2.5. Gin Pole Jumping and Lifting 17

    2.6. Hoist 17

    2.7. Temporary Supports 18

    2.8. Guy Installation 19

    2.9. Rigging Components 20

    2.10. Personnel Lifting 22

    2.11. Dismantling/Modification Considerations 22

    2.12. Load Testing and Verification 23

    2.13. Monitoring During Lifting Operations 23

    2.14. Climbing Facilities 23

    2.15. Site Evaluation 24

    2.16. Training 24

    3. GIN POLE OPERATION AND USE 31

    3.1. Scope 31

    3.2. Gin Pole Components 31

    3.3. Lifting Personnel 32

    3.4. Gin Pole Inspections 32

    3.5. Load Charts 33

    3.6. Tilted Gin Poles 36

    3.7. Special Engineered Lifts 37

    4. SUPPORTING STRUCTURE LOADING 48

    4.1. Scope 48

    4.2. Design Standards 48

    4.3. Structural Loads 48

    4.4. Load Combinations 49

    4.5. Construction Duration Reduction Factors 49

    5. GIN POLE ANALYSIS AND DESIGN 51

    5.1. Scope 51

    5.2. Classification of Vertical or Near Vertical Gin Poles 51

    5.3. Design Method 51

    5.4. Impact Factors 51

    5.5. Load Combinations 51

    5.6. Reactions 52

    5.7. Analysis Models 52

    5.8. Overall Stability 53

    5.9. Connections 54

    5.10. Rooster Head 55

    5.11. Generation of Standard Load Charts 56

    6. GIN POLE CONSTRUCTION 61

    6.1. Scope 61

    6.2. Manufacturing 61
  10. WECF0912

    WECF0912 Friend of the Community

    Thank you for your reply. We are actually wrapping up a new requirements standard on wireless network elements for the Carriers. Wireless antenna concealment housing/enclosure is not specifically stated, just indirectly specified. For example, wireless cell towers and associated structures are referenced to TIA 222G. Antenna's attachment hardware are referenced to various Telcordia and ASTM standards. Telecommunication electronic equipment housings/cabinets are referenced to Telcorida GR-487.

Share This Page