The Futaba MCR-4A is a miniature lightweight 4-channel receiver and motor controller designed for motor aircraft. It features a high-performance FET amplifier capable of controlling motors from 280 to 540 class and includes a built-in high-performance low voltage "autocut" circuit to prevent loss of control due to power supply voltage drop. The device operates on 40 MHz frequencies and supports NiCd battery packs ranging from 6V to 8.4V.
| Receiving frequency | 40 MHz |
|---|---|
| Voltage | 6V, 7.2V, or 8.4V |
| Continuous maximum current | 100 A |
| Momentary maximum current | 450 A |
| Current drain | 226 mA |
| Resistance loss | 20.012 |
The MCR-4A can control motors from 280 class to 540 class.
Yes, the crystal can be changed from outside the MCR-4A case.