Aaron,
I have used that exact dongle to connect an HP laptop to a v4 ubitx running KD8CEC software on the uBITX.? I am not suggesting that you change out your software, as that would require a screen change, however I do believe that the audio and cat control should be the same.? Be sure to wire both the tip and ring of the mic input to the audio out of the uBITX.? That is a stereo input device and the WSJT-X software seems to average the reading of both channels together, putting a lot of noise on the unconnected input.
Others have said that they were able to wire the audio signals directly.? I could not get that to work.??I did add an EasyDigi interface for the transformer isolation.? Out of all the hardware on the EasyDigi, only the 600:600 ohm isolation transformers are being used.? It would be less expensive to just by the transformers, as the CAT interface handles the rig control.? Even with the transformers, I still needed to add ferrites to all leads to block RF from causing problems.
I do not have WSJT-X on this computer, however, the settings were pretty simple.? I used the Yeasu FT-857 for the radio, 38400 for the baud, 8 bits, 2 stop bits, and CAT for the PTT control.? I know there were some other settings that I just do not have right now, however with the test feature you should be able to try different settings on that first radio setup page to get it to work.? The input and output for the audio is of course the Sabrent dongle.? You can see what that is in the device manager of Windows.
The volume setting on the uBITX was very sensitive, I had to run it just bearly on to keep the signal bar in the green.? The output setting of the WSJT-X to the uBITX needs to be checked.? I used my power output meter to adjust the level to get about the same power reading as CW would produce on the key down.
Above are what I remember from the last time I set up the uBITX.? I have since gone to either my IC-7300 or a Hermes HL2 for any of the weak signal modes.? Just not gone back to the uBITX for digital in a while.
73
Evan
AC9TU
