[Elecraft] K3 - AFSK anamoly? No replies, try again

[Fred Jensen]

Maybe.  The K3 offers so many ways to configure things, not all 
combinations are guaranteed to be optimal.  You might also try not using 
the dual PB DSP, my experience has been that MMTTY and 2TONE decode a 
bit better without it.  I have the "stock" 2.7 KHz filter, and a 5-pole 
500 Hz.  I normally run RTTY contests with 300 Hz DSP, and 915 Hz MARK 
AFSK-A.  I find that decode accuracy starts to degrade below 300 Hz DSP BW.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the Cal QSO Party 1-2 Oct 2016
- www.cqp.org

On 1/7/2016 2:24 PM, Mike Murray wrote:

> I finally got back to the shack to check the setup.  It looks like I was
> actually using a 1.8 kHz SSB roofing filter in conjunction with the 500 Hz
> dual PB DSP filter.  I also checked the filter offsets which were all at
> 0.0 (all 8 pole) and I was using AFSK A mode.  Is the effect I'm seeing due
> to use of the 1.8 filter or do I have more research to do?

> Mike - W0AG