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

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

CHARACTERISTICS:
Narrow-band spacing and superior indication filtering combine to offer exceptionally clear, interference-free reception and amazingly smooth, accurate control
ideal for Park or Slowly Flyers
Array of around 500 legs (167m)
makes use of standard size servo connectors
This covers the complete 72MHz band
twelve months guarantee

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

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

SPECS:
Narrow Band: 20kHz
energy needs: 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)
Body weight: 0.36oz (10.2g)