ORIGINAL: patf
Is there any concern for how much draw you are pulling across the receiver boards? (as Eddie alluded to) using a kingcat for and example there are some 10(?) digitals all pulling amperage across the receiver board. That is where I would be most worried.
In our KingCat my answer to that concern is the following.
The receiver and the three servos on the radio tray are powered by a 4 cell 1200 Mah nicad. All of the flight control servos are powered by a 5 cell 2200 Mah nicad who's power goes through two parallel switches to a set of 14 gauge wires that run down each boom (gross over kill). Power is taped off at the wing for the aileron and flap, and the rudder and elevator are on the end of each run. Signal and receiver ground go through shielded cable. All the grounds are pulled together at the servo plug. Since there is very little load on the receiver battery it only requires charging once a day, and the voltage to the receiver is very constant. Also when I add the gyro it will be powered by the 4 cell, which is what most gyros seem to need (some don't work on 5 cells). Not sure if it is related to this setup, but the radio has the best range check I have ever gotten, antenna off; 175+ yards.
Steven