[Elecraft] MMTTY DATA-A or FSK

[david Moes]

With AFSK-A  the K3  has very a narrow DSP filter to maintain a really 
good transmit IMD  so you need to keep the modulating frequencies 
within  the chosen preset filter range  1275 in my setup.  You can use 
the waterfall to tune but you need to use DATA-A instead of AFSK-A     
risk is any off frequency noise from the sound card, harmonics etc will 
also get transmitted   not really a big issue if the sound card is good 
quality.   I found that with the P3 the markers lined up with the mark 
frequency  so tuning with the VFO was quite convenient without the P3  I 
may have been more tempted to use Data-A and tuning with the mouse

David Moes
President: Peterborough Amateur Radio Club.
dmoes at nexicom.net
VE3DVY,  VE3SD

On 10/2/2014 06:32, David Cole wrote:
> Why only tune the radio, and not use the Waterfall?