My DR-891 is connected with cables purchased through DigiRig with the appropriate ferrites at both ends. I also purchase and have installed the isolator at the USB port on my laptop.
The FT-891 is set up as per the DigiRig setup manual. MENU 16-14 DATA DATA GAIN is set at 50. Transmit “HF POWER” is at 40W. I have a DX Commander Classic antenna with generous radial screen at the end of 75 feet of feedline with ferrites at the feedpoint. I haven’t had any issues with RF inside the shack.
The DigiRig USB “Speakers Properties” “Levels” tab has the Microphone disabled and the slider set for -22.1dB (about 20%).
The WSJT-X v2.7.0 “Pwr” slider is at 100%.
Everything was working great for months. WIth no changes made, it started in dropping the PTT immediately after it was keyed, after the first or second transmission in a QSO train. It would keep dropping the PTT immediately after keying for maybe up to ten transmissions, and I would lose the other operator and they would move on.
I tried backing off the CAT baud rate on the serial port and that did not help. I am really at my wits end on this. Any ideas what may be causing this?
Thanks in Advance & 73,
Dave