ORIGINAL MESSAGE: On Wed, 27 Jan 2010 18:32:12 -0800, Kok Chen <chen at mac.com> wrote: >The symbol period of PSK63 is half (16 ms) that of PSK31 (32 ms), and the symbol period of PSK125 is a quarter (8 ms) of the period of a PSK31 symbol. REPLY: So, is the bottom line that PSK125 would be a better DX mode than the slower rates? 73, Bill W6WRT