radio frequency spectrum & antennas

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Discussion in 'General Electronics Chat' started by micro1, Apr 29, 2016.

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  1. Apr 29, 2016 #1
    micro1

    Thread Starter Member

    Feb 22, 2015
    76
    1
    hi all

    I have a question in my mind:

    how it was radio frequency spectrum Past and Present( is mean now )?

    how it was antennas Past and Present(is mean now )?
     
    Last edited: Apr 30, 2016
    #1 Reply
  2. Apr 30, 2016 #2
    bertus

    Administrator

    Apr 5, 2008
    18,505
    3,568
    #2 Reply
  3. Apr 30, 2016 #3
    micro1

    Thread Starter Member

    Feb 22, 2015
    76
    1
    please Join me your ideas about radio frequency spectrum and antennas at old and now :)
     
    #3 Reply
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