Futaba R1131PR113iP 3-Channel 29MHz Micro PCM1024 Receiver. FEATURES: Narrow-band spacing and superior signal filtering combined to provide exceptionally clear, interference-free reception and amazingly smooth, accurate control. INCLUDES: One R113IP 3-Channel 29MHz Micro PCM1024 Receiver SPECS: Power Requirements: 4.8 to 6.0V (shared with servos) Current Drain: 18mA Length: 42.7mm Width: 28.7mm Height: 16.0mm Weight: 21g