Reflective RF material?

Discussion in 'General Electronics Chat' started by jut, Jul 26, 2009.

  1. jut

    Thread Starter Senior Member

    Aug 25, 2007
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    I built a wifi antenna from an old parabolic dish that came from a resistive heater. I'm pretty sure the dish is made of aluminum. My two questions are:

    1. is aluminum rf reflective?

    2. what's a good material for rf reflectiveness? ie, what do they use is those Prime star, Direct TV dishes?

    thanks! :)

    [​IMG]
     
  2. bertus

    Administrator

    Apr 5, 2008
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  3. Wendy

    Moderator

    Mar 24, 2008
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    Almost any metal is RF reflective, along with fine metal mesh (long as the mesh is fine enough).

    In the case of an antenna, the shape of the parabolic is critical.
     
  4. jut

    Thread Starter Senior Member

    Aug 25, 2007
    224
    2
    Last edited: Jul 26, 2009
  5. Wendy

    Moderator

    Mar 24, 2008
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    I dunno, seems kinda iffy. But then the fun is experimenting.

    How about a nice wok instead?

    Seriously though, there is a simple test to see how well it might work. Use sun light to see where the focal point is, the principle is the same.
     
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