lior - what you dont seem to grasp its not the total amp draw over a flight but the sudden burst when all of a sudden you draw a lot and the voltage drops for a split second below the rx's minimum volt requirement - this is when the rx goes to lock out - this is like a small spike and thats it - its not trying to justify anything here only to resolve the issue - thats why a powerbox works because it supplies constant voltage to the rx first before the servos, preventing lock out. so the issue of enough c's is the redundancy factor here - that you maybe have had an antenna issue remains a possibility - my point, never under supply your 2.4 rx - also follow up why people use the capacitor??