Ok, tried to fly again last night, same problem.
1. With the motor/esc/vtx/camera/rc tx all powered I can walk 110 paces
2. With the vtx/camera powered I can walk 120 paces
3. I swapped out the FRSKY for the Corona (72mhz) same issue.
4. Bought and installed the comtech rx module, no change.
5. I have tried a few different antenna's same dropping.
6. I just tried a new area to fly (about 40 miles west of where I usually do) and still couldn't make it past 100 paces.
I am getting ready to throw in the hat here......