[Elecraft] K3 - A different RTTY question

[Lyle Johnson]

Normal.
> With DPB on, even the noise sounds a bit like a RTTY signal, and the 
> MMTTY  shows 2 little peaks on the FFT display.
> Do I have a configuration problem, or is that normal?

The DPB filter creates two narrow filters centered on the RTTY tone 
pair.  For it to work well, you have to tune the radio very accurately.  
Some RTTY contesters report that the DPB helps in difficult conditions.

If you use AFC or other receive features in the RTTY program -- anything 
other than tuning the K3 precisely -- performance may suffer.

73,

Lyle KK7P