[GreenKeys] Updated Klingenfuss RTTY info

[John Lawson]

  Further to the 3rd-shift RTTY code discussion, (courtesy of Bob Camp,
who has sent me the link):

http://www.universal-radio.com/catalog/books/1912.html

 of course it's somewhat more complicated than my 1983 copy...  ;}


 Cheers

John  KB6SCO