RE: RAM Beacon causes servo glitching; Help
Strobes on real airplanes can case noise in their radios too. you might try grounding the 9v with the others. You also might want to twist the servo wires or get braided extensions. It is also best to keep the unit as far away from wires and radio parts. The box is something like a gas engine ignition so similar solutions are what you need to look at. Ferrite beads might help too.