Poor DAX audio to other SW

EI2GLB

Hi All

This is something I have noticed since I moved to my 6500 years ago but just sort of lived with it,



I used to use various Icoms and using programs like mrp40 and mmtty I had great sussess working weak DX all over the world,



No I switched to my Flex6500 and I find that the audio feed from DAX to both these programs is really poor and the decode level has dropped, as my operating habits have moved to mostly FT8 I didn't really notice or care as it doesn't seem to affect it,



But now the Sunspot numbers are on the rise and there is CW and RTTY about again I find I can't work the weak ones,



This isn't the usual restart DAX issue it is the quality of feed from DAX to other SW problem that has been the same since V1



Anyone else notice this and I wonder it there anyway to fine tune it to make working weak DX easier,

Thanks

Trevor

EI2GLB

Mike-VA3MW

That seems strange. Can you share a picture of the waterfall from WSJTx and you want to make sure it covers the entire 3Khz bandwidth, which it does not initially. Also, is your AGC-T set correctly?

There is a number of user adjustments in SmartSDR and WSJTx that can severely affect the ability to decode reliably. Another clue is if your DT numbers are getting to a value of greater than 1.0. You can decode up to a value of 2.5 (secs) but is something to watch for. Screen shots of your configurations really help to provide more information. We also have lots of FT8 videos on our YouTube channel that talk about a number of things related. https://www.youtube.com/@FlexRadioSystems

EI2GLB

Hi Mike

Same as my Facebook reply FT8 seems ok it's MRP40 and MMTTY that I am having issue with

Thanks

Trevor

EI2GLB

Erik Carling EI4KF

These programs pre-date SDR and certainly MRP-40 does not work well with DAX. It is not a DAX failing. For CW decoding and RTTY TX/RX there is SDC written for the family of FlexRadio transceivers. As discussed at

SDC Skimmer for Flex Radios - Page 3 — FlexRadio Community

the software works like a charm.

EI2GLB

Thanks Erik I will have a look at it,

Trevor

EI2GLB