PS4, Enhanced Edition, 1.01, default controls, normal difficulty, career mode.
Finally arrived at Duna with my first sortie consisting of of two landers, their delivery vehicles, and a couple of communications satellites.
In orbit everything has great comm strength, but nothing is communicating with each other.
My scan Sat directly overhead of my lander at a range of 44 km with; 4x 88-88, 2x Communotron DTS-M, and a Communotron-16S (lots of electricity, and deployed) was no help to my now vaporized Duna lander that had a communotron 16 deployed...
Displaying the communication comm-net has all my Duna satillites only communicating with Kerbin, and not with each other even when one has signal drops because Duna or Ike are is the way....