I assumed that people kept using FSK because paths to Europe can have 20-30 Hz 
of Doppler spread.

73,

John
KD6OZH

  ----- Original Message ----- 
  From: KH6TY 
  To: digitalradio@yahoogroups.com 
  Sent: Tuesday, March 09, 2010 19:08 UTC
  Subject: Re: [digitalradio] Re: 1976 FCC - Delete all Emission Types from 
Part 97


    It is probably all of these things that keeps PSK63 from replacing RTTY for 
contesting, as well as there being no need for an interface since most 
transceivers have FSK built in these days.

  That is my best guess anyway.

73 - Skip KH6TY
 

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