Futaba R156F FM 40MHz/ 72MHz Micro Receiver w/o Short Crystal  [R156F]

That is an R156F 6-Channel 72MHz FM Receiver "Without Crystal" from Futaba.
It's not suggested to go below channel 16
with your receivers because you can experience interference.

QUALITIES:
Narrow-band spacing and superior sign filtering combine to offer exceptionally clear, interference-free reception and amazingly smooth, accurate control
Perfect for Park or Slowly Flyers
Array of around 500 feet (167m)
Uses standard size servo connectors
This covers the whole 72MHz band
One year guarantee

INCLUDES:
One R156F 6-Channel 72MHz FM Receiver without brief Crystal

REQUIRES:
One FUTL63** "Short" Crystal (High)
FUTL62** "Short" Crystal (Low)
If utilizing all 6 stations a Y-harness is required, HCAM2500.

SPECS:
Narrow Band: 20kHz
Power demands: 4.8 to 6.0V (distributed to servos)
Current Drain: 10mA
Length: 1.3" (33.3mm)
Width: 0.51" (13mm)
Height: 0.84" (21.4mm)
Weight: 0.36oz (10.2g)