This is the Futaba R148DF 8-Chanel 72MHz FM Dual Conversion Micro Receiver Without Crystal. This is a Low Band (channel 11-35) receiver without a crystal.
Narrow-band spacing and Dual Conversion signal filtering combine to provide exceptionally clear, interference-free reception and amazingly smooth, accurate control.
One Futaba R148DF 8-Chanel 72MHz FM Dual Conversion Micro Receiver Without Crystal
One FUTL57** Dual Conversion Receiver Crystal
Narrow Band: 20kHz
Power Requirements: 4.8 to 6.0V (shared with servos)
Current Drain: 14mAh
Length: 2.19" (55.5mm)
Width: 1.00" (25.5mm)
Weight: 1.07oz (30.4g)
1st IF: 10.7MHz
2nd IF: 455kHz