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  1. Futaba (#4EX-FM) 4 Channel Digital Proportional - FM 40MHz

    Our Price:  Low Price: USD$111.90

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Over voltage or reverse polarity. Maybe user problem.

  • For Airplane Models

    Invest For The Future
    Planning ahead always makes good sense. And that's what makes the 4EXA FM such a sound choice as a first flight system.
    It's more than a great system for a first model. Four-model memory also makes it great system for a second, third and fourth model, too. Switching from one model to another doesn't require a time-wasting reset just a push-button and a few seconds. The 4EXA not only does the work of four 4-channel systems for a single price: it also delivers precision most systems don't offer and a list of enhanced performance features other sport systems can't match.
    The 4EXA is hard to beat for value, but easy to program. You navigate with the ease of Mode and Select keys and lock in digitally accurate settings with the Data Input Lever.

  • 4-model memory w/model numbering, data
  • Trim Memory
  • EPA (EndPoint Adjustment) on all channels
  • Servo Reversing on all channels
  • Exponential on ailerons, elevator and rudder
  • Wing mixing for V-tail and elevon
  • 40-segment CD screen
  • Trainer system
  • Low battery alarm

    R136F Ratings

  • Receiving Frequency: 40MHz band
  • Intermediate Frequency: 455kHz
  • Power Requirement: 4.8 or 6.0V (shared with servo)
  • Current Drain: 10mA (at 4.8V/No signal)
  • Size: 33.4x50.3x18.1mm
  • Weight: 27.8/28.1g


  • 4 Channel Radio Control (TX T4EX)
  • 6 Channel Receiver 40MHz (RX R136F FM)
  • 3 Servos (SX S3003X3)

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