Receiver two short antennas
Remote two short antennas
Standard advice is to mount them so that the antennas on each are parallel, and
at 90 degrees between units. It's possible to route the antennas differently, so that at least one is at at least 45 angle to the others.
I usually do this when the natural position of one units antenna is parallel to such things as metal control rods, or wiring.
I can't say if the results are an improvement or not, since I haven't had any recent (Knock on Wood) loss of control problems.
The problems I had some time ago were on models with the antennas oriented per the standard recommendations,
although that was not believed to be the cause.Â* Brownout was the most likely culprit.