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DX7 7-Channel Air Transmitter Only MD2



*at participating retailers

DX7 7-Channel Air Transmitter Only MD2

Item #: SPMR7700


Retail: $319.99*

Find a Retailer Buy Now *Avaliable at participating retailers


Key Features

  • 20-model memory
  • Airplane and heli software
  • Switch assignment
  • P-mixes
  • 3-axis dual rate and expo
  • 3-position flap (airplane)
  • 5-point throttle curve (heli)
  • 3 flight modes plus hold (heli)
  • Gyro programming (heli)
  • CCPM, 2-servo 90 degree, 3-servo 90 degree and 3-servo 120 degree
  • Configured to default to airplane model type (all heli programming is available)

Product Specifications

# of Channels:
Not included
Not included
Programming Features:
Aircraft and heli
Model Memory:
20-model memory
Mode 2
Transmitter (Tx) Battery Type:
1500mAh NiMH


With the DX7 transmitter you’ll be able to fly anything from micro electric helis to big gas-powered IMAC planes without regard to frequencies and free from fear of interference. Calling this kind of thing “revolutionary”  just doesn’t cut it. It is nothing less than a quantum leap in RC technology that will change how you fly forever. Never again will the availability of a frequency pin dictate when you can take off. Never again will you have to ask, “What channel are you on?” Never again will your flying experience be interrupted by model-generated RF noise, interference from commercial broadcast towers or anyone on another RC system.

The big difference with DSM2® technology is that it not only flies any size model with absolute precision and complete freedom from interference, but it also processes its signal faster than any high-end 72MHz PCM system.

DSM2—Security and Speed:
Unlike most first-of-its-kind innovations, DSM2 technology is not an unproven concept. It is based on the same Spektrum 2.4GHz DSM® (Digital Spectrum Modulation) that RC car racers, as well as micro electric and park flyer modelers, have been enjoying for at least two years. Like DSM technology, DSM2 technology provides an impenetrable radio link that’s immune to every known type of RC interference. Because it operates at 1024-bit resolution, it provides the kind of locked-in response that will have pilots feeling more connected to their models than ever before.

ServoSync™ and ModelMatch™ Technologies—Extra Safety and Precision:
DSM2 and the AR7000 aren’t the DX7’s only marvels. Spektrum engineers have come up with two more patent-pending innovations that you’ll wonder how you ever lived without—ModelMatch™ and ServoSync™ technologies. ServoSync technology is an ingenious new feature that actually resequences the bits of data the DX7 radio transmits based on the type of mixing you select. So, if you have a dual elevator on your big Extra or a 3-servo CCPM setup on your heli, ServoSync technology will see to it that those servos working together receive their impulses together. The result is more synchronized servo movement that translates into an undeniable, locked-in feel when you fly. ModelMatch technology puts an end to wrong-model syndrome. Almost everyone who flies RC has at one time or another crashed because of neglecting to verify the model name on the transmitter display during preflight check. A unique code is embedded in the DX7 transmitter signal so that, if the wrong model’s name is on the screen, the model’s controls simply won’t respond.

DX6 owners and anyone else who flies small electric models will be pleased to know that the AR6000 receiver works perfectly with the DX7 transmitter, too. In fact, the AR6000 receiver will actually benefit from the DX7 transmitter signal speed advantages, as well as ModelMatch and ServoSync technologies. So whatever the aircraft, be it a .60-size heli or a 15-ounce foamie, it can fly with the DX7.

Always purchase products from a Horizon Hobby, Inc. authorized dealer to ensure authentic high-quality Spektrum product. Horizon Hobby, Inc. disclaims all support and warranty with regards, but not limited to, compatibility and performance of counterfeit products or products claiming compatibility with DSM2 or Spektrum products.

Attention: Horizon Hobby has confirmed that all Spektrum Products being sold by KoKo Technology are counterfeit.  We consider it a danger to use these products, waive all liability and will not support any warranty or service in regards to them.

Manuals and Support


Articles, Reviews, How-Tos & More


Recently Horizon Hobby Service Department discovered a software issue in DX7 transmitters with HA002J, HR003J, HR004J, HR005J, HR006J, HR007J, HR008J or HR009J Product IDs (PIDs) and FCC ID: BRWDAMTX11.

The issue Service Center discovered affects ModelMatch for models 11–20 when binding and saving new models into memory.

Horizon Hobby has a software update to correct this issue. This software update can only be performed by Horizon Hobby’s Service Department authorized Technicians.

If your DX7 has one of the following PIDs: HR003J, HR004J, HR005J, HR006J, HR007J, HR008J or HR009J and FCC ID BRWDAMTX11.  

    • Click here to complete the Spektrum DX7 Return Request form.
    •   You may also e-mail the Horizon Hobby Product Support team. Please type “DX7 Return Request Form” in the subject line. Please include your shipping address, daytime phone number, and the date code from your Spektrum DX7 transmitter. Click here to e-mail product support.
    • Horizon will pay for all ground shipping.
    • If you have further questions, please call Horizon Hobby Product Support at 877-504-0233.
    • Consumers outside the US and Canada should contact their local retailer or distributor. A list of International distributors may be found at: www.horizonhobby.com/StoreLocator.
    • As with all RC aircraft, please check your transmitter and equipment prior to each flight.
    • Horizon Hobby and the Spektrum team apologize for this inconvenience.

Related Parts

Included  See All

  • Male/Female Universal Bind Plug[SPM6803]

  • 150mA Dual Output Charger[SPM9550]

  • []

  • []

Parts Listing  See All

  • Transmitter Antenna Assembly: DX7[SPM6818]

  • Battery Door: DX7[SPM9009]

  • 9.6V 2500mAh NiMH Transmitter Pack[SPMB2500NHTX]

  • []

Optional Accessories  See All

  • Spektrum Deluxe Transmitter Case, Aircraft[SPM6701]

  • Spektrum Transmitter Case Foam[SPM6702]

  • Spektrum Neck Strap Adapter[SPM6703]

  • Spektrum Deluxe Double Tx Case, Aircraft[SPM6706]