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ELCTRICAL & MECHANICAL TILT

Viewing 12 posts - 1 through 12 (of 12 total)
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  • #53226 Reply
    MKT
    Guest

    1)

    Why do they have provided two options for tilt in antenna, ie
    Electrical & Mechanical

    2)

    What will happen if we have different degrees of tilt for mechanical & electrical at an antenna? say 2 degree for mechanical and 4 degree for electrical.

    3)

    What is the standard practice in industry for tilts (electrical & mechanical) to achieve the objective of

    a) Coverage

    b) Capacity

    c) indoor coverage

    4)

    How can we check the values if tilt for mechanical and electrical for an antenna?

    5)

    How does remote electrical tilt work? Any special antenna?

    Regards

    MKT

    #53227 Reply
    Mohit
    Guest

    Hi MKT…

    1)One basic reason for diffrent tilts is, bcoz Electrical tilt is having less backlobe nd sidelobe as compared to mechanical tilt.
    so in electrical tilt reduces the interference.

    2)There is no such standard practise followed…but wat i have seen is that 2 deg of electrical is default.

    3)values of tilt can be seen physically….for electrical tilt we had a nobe at the bottom of the antenna….nd mechanical tilt is given at the upper end of the antenna….where a clamp is move to adjaust the tilt.

    #53228 Reply
    pix
    Guest

    MKT,
    I have written the formula to compute the tilt based on the cell range you need to achieve. Check the related post.

    http://www.erlang.com/forum/erlang/thread.htx?thread=4196

    Standard practise in urban environment : 6 to 8 degrees tilt.

    Electrical vs. mechanical : easier to set up, easier to modify, backlobe is tilted as much as the front lobe, less visual impact, remote adjustment possible.

    So it is good to buy antennas with default 8 degrees electrical downtilt.

    If mech and elect are put together (this is oftenly done), you just sum both tilts. 4+2 = 6 degrees of effective downtilt.

    So if 8 degrees elec tilt is too much, you can always apply some uptilt. This will further reduce the backlode 🙂

    Regards,Pix

    #53229 Reply
    Kwace Papa
    Guest

    why do mechanical and electrical tilt

    #53230 Reply
    Kwace Papa
    Guest

    how to prepare positive stop 7&8 connectors

    #53231 Reply
    nitin tomar
    Guest

    can anybody provide me the formula for mechanical tilt(somewhat based on tan or tan inverse).

    #53232 Reply
    pix
    Guest

    go there.. in the address bar, replace the 4202 by 4196.

    thread=4196

    #53233 Reply
    shailesh kumar ojha
    Guest

    please give me answer of above question

    #53234 Reply
    Pix
    Guest

    Hi,
    What is the above question ?

    #53235 Reply
    kamal
    Guest

    plese help me to get answer for the followings

    1)One basic reason for diffrent tilts is, bcoz Electrical tilt is having less backlobe nd sidelobe as compared to mechanical tilt.
    so in electrical tilt reduces the interference.

    2)There is no such standard practise followed…but wat i have seen is that 2 deg of electrical is default.

    3)values of tilt can be seen physically….for electrical tilt we had a nobe at the bottom of the antenna….nd mechanical tilt is given at the upper end of the antenna….where a clamp is move to adjaust the tilt.

    MKT – 28 Jul 2008

    1)

    Why do they have provided two options for tilt in antenna, ie
    Electrical & Mechanical

    2)

    What will happen if we have different degrees of tilt for mechanical & electrical at an antenna? say 2 degree for mechanical and 4 degree for electrical.

    3)

    What is the standard practice in industry for tilts (electrical & mechanical) to achieve the objective of

    a) Coverage

    b) Capacity

    c) indoor coverage

    4)

    How can we check the values if tilt for mechanical and electrical for an antenna?

    5)

    How does remote electrical tilt work? Any special antenna?

    Regards

    #53236 Reply
    Deon
    Guest

    I wonder if anybody can help with an Electrical down tilt formula I require to adjust the cable lengths on the phasing harnesses as a factor for 2 or 4 stack dipole arrays when the required degrees down tilt is known and the frequency is known.

    #53237 Reply
    deepredblue
    Guest

    How does el. tilt works ?

Viewing 12 posts - 1 through 12 (of 12 total)
Reply To: ELCTRICAL & MECHANICAL TILT
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