[Elecraft] K3: FSK or AFSK

[Don Wilhelm]

  Bill,

You have a successful setup, so why even consider switching.  There is 
no difference between FSK and AFSK on the receiving end.  The major 
difference on the transmitting end is that FSK is more tolerant of 
things like the mark frequency setting, but other than that, I cannot 
find any difference.

Note: you still must select the mark frequency for proper receive 
decoding, but using FSK instead of AFSK removes that requirement from 
the transmit side only.

73,
Don W3FPR

On 9/27/2010 7:30 PM, Bill Myers wrote:
> I'm trying to remember why I wanted a FSK-capable radio for RTTY.  Before
> (the K3), I have used sound-card programs (MMTTY, WriteLog) - now I have the
> option.  As I am a little short on serial ports, I initially set up the K3
> using AFSK.  Why should I switch?
>
> Bill K6IFF
>