Sorry if someone already said this.

I suppose since you got your same results at your home as you did at the field, you are ruling out any local effects such as broadband interfernence at the test location, some Ham could have a new widget he just built that is off or a utiltiy is testing BPL or something like that..

Anyway, I think you really need to baseline the link performance, meaning test just the transmitter, receiver, rx battery (no switch) and one servo. I usually mount a 3 foot balsa stick to the servo output arm so I can see it, and mount this servo, RX and battery on a table or wooden sawhorse or something.

With JR 10Xs, antenna off, I have seen this test yield hundreds of feet of range. Anyway, make sure you get good results, and keep changing parts till you do.


Now you have a baseline distance to work with. Now start adding equipment one piece at a time (servos, switches, regulators, batteries ECUs, etc) and make sure you do not get a significant reduction in range (say less than 10%) as you add each part.