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PSK 63 & 125 FEC
Pulse Shift Key
Comes in 2 different formats
PSK63F is a bandwidth of 63hz and uses a FEC on it
for more reliable copying
PSK125F is a bandwidth of 125hz and uses a FEC
for more reliable copy
In my experiences that PSK63F is slightly less sensitive than PSK31 for SNR performances
But the wider bandwidth resistance against Doppler and Multi path fading
and has a higher through put than PSK31 has. But PSK63 seems to be a great performer
in all kinds of different conditions have made a lot of Europeans contacts with it
And slow Fading doesn't effect PSK63 like it would PSK31
Because of the FEC And in Nino program you can adjust the FEC
For even stronger performance
PSK125
it has great for through put but, is even less sensitive than PSK63 is
But it is even better for Doppler shifting and Multi Path
Fading and the FEC works pretty good on this mode
I have made some Europeans contacts with this mode and did real well