Phonetic alphabets usually refer to alphabets with special characters with a single pronunciation in order to indicate in dictionaries, and other documents, how to pronounce words.

Phonetic alphabet is the name also used when referring to alphabets containing an internationally recognized words for each letter of an alphabet used by operators to remove ambiguity when spelling words.  These were particularly used during historical wars and by telephone operators when communication equipment was of a poor quality.

Here follows various phonetic alphabets for English.

    Nato &
    Aviation

  A Alfa   (Spelt this way so non-English speakers don't say alp-ha)
  B Bravo
  C Charlie
  D Delta
  E Echo
  F Foxtrot
  G Golf
  H Hotel
  I India
  J Juliett   (Spelt with the double T so that French speakers pronounce the 't' sound)
  K Kilo
  L Lima
  M Mike
  N November
  O Oscar
  P Papa    (Technically pronounced with the stress on the last syllable)
  Q Quebec
  R Romeo
  S Sierra
  T Tango
  U Uniform
  V Victor
  W Whiskey
  X X-ray
  Y Yankee
  Z Zulu

Apparently the numbers exist too, but I wasn't aware of these:

    Nato &
    Aviation

  0 Zero
  1 Wun
  2 Two
  3 Tree
  4 Fower
  5 Five
  6 Six
  7 Seven
  8 Ait
  9 Niner

And symbols:

  . Decimal (decimal point)
  . Stop (full-stop)

This site has various alphabets http://www.soton.ac.uk/~scp93ch/morse/.

related to WikiAlphabet (EditHint: still more stuff at WikiAlphabet that probably should be moved to PhoneticAlphabet).

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Listen to the phonetic identification of Ward's IRLP VoIP radio node: http://c2.com/~ward/irlp/files/id.wav.