[Elecraft] K3: FSK or AFSK

[Jim Brown]

  On 9/27/2010 4:30 PM, Bill Myers wrote:
> I'm trying to remember why I wanted a FSK-capable radio for RTTY.
I've done thousands of RTTY Qs in contests, sometimes scoring fairly 
well, and I've NEVER used FSK. If you're using a radio that allows you 
to put the AFSK tones in the center of the radio's narrow passband IF,  
there's no good reason to bother with FSK. The K3 DOES allow that. So 
does the FT1000MP (I know because I did it with both radios).  Some 
radios do NOT (some Icoms, I am told, and probably others).

Some folks who don't know how to get audio cleanly from their computer 
to their radio manage to introduce hum, buzz, and distortion into the 
transmitted signal. But that is VERY easy to do properly, so that's not 
a good reason to do FSK either.

  If you DO have a problem with the computer interface, check out the 
tutorials on my website. http://audiosystemsgroup.com/publish.htm   See 
especially the one on computer interfacing, and the chapter on Solving 
Problems in the Shack in the RFI tutorial.

73, Jim Brown K9YC