MORSE_ALPHABET = Hash.new([]).merge!({
    " "=>[0],
    "A"=>[1, 0, 1, 1, 1],
    "B"=>[1, 1, 1, 0, 1, 0, 1, 0, 1],
    "C"=>[1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1],
    "D"=>[1, 1, 1, 0, 1, 0, 1],
    "E"=>[1],
    "F"=>[1, 0, 1, 0, 1, 1, 1, 0, 1],
    "G"=>[1, 1, 1, 0, 1, 1, 1, 0, 1],
    "H"=>[1, 0, 1, 0, 1, 0, 1],
    "I"=>[1, 0, 1],
    "J"=>[1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1],
    "K"=>[1, 1, 1, 0, 1, 0, 1, 1, 1],
    "L"=>[1, 0, 1, 1, 1, 0, 1, 0, 1],
    "M"=>[1, 1, 1, 0, 1, 1, 1],
    "N"=>[1, 1, 1, 0, 1],
    "O"=>[1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1],
    "P"=>[1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1],
    "Q"=>[1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1],
    "R"=>[1, 0, 1, 1, 1, 0, 1],
    "S"=>[1, 0, 1, 0, 1],
    "T"=>[1, 1, 1],
    "U"=>[1, 0, 1, 0, 1, 1, 1],
    "V"=>[1, 0, 1, 0, 1, 0, 1, 1, 1],
    "W"=>[1, 0, 1, 1, 1, 0, 1, 1, 1],
    "X"=>[1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1],
    "Y"=>[1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1],
    "Z"=>[1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1],
    "1"=>[1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1],
    "2"=>[1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1],
    "3"=>[1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1],
    "4"=>[1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1],
    "5"=>[1, 0, 1, 0, 1, 0, 1, 0, 1],
    "6"=>[1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1],
    "7"=>[1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1],
    "8"=>[1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1],
    "9"=>[1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1],
    "0"=>[1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1],
    "/"=>[1,1,1,0,1,0,1,0,1,1,1,0,1]
    })
    
def calculate_bitstream(message)
  bits = []
  message.upcase.each_char do |letter|
    bits += MORSE_ALPHABET[letter]
    bits += [0, 0, 0]
  end
  bits.pop 3
  self.bitstream = bits
end