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The AR7700’s seamless, one-wire connection and multiple output options make it easy to use a Spektrum radio system with the most popular multi-rotor flight controllers. A remote receiver is included.

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AR7700 Serial Receiver with PPM/SRXL/Remote Receiver Output AR7700 Serial Receiver with PPM/SRXL/Remote Receiver Output AR7700 Serial Receiver with PPM/SRXL/Remote Receiver Output AR7700 Serial Receiver with PPM/SRXL/Remote Receiver Output AR7700 Serial Receiver with PPM/SRXL/Remote Receiver Output AR7700 Serial Receiver with PPM/SRXL/Remote Receiver Output
  • Overview
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  • Manuals & Support
  • Q & A

Made for multirotor

Three Output Options.
One Connector.

The AR7700 is compatible with many of the most popular flight controllers and gives users three connection options to choose from: Serial (SRXL), PPM and Remote Receiver. Just plug a single connector into the receiver port that supports the option you want to use and connect it to your flight controller.

Two AUX Ports
And A Gear Port.

The AR7700 includes extra ports that let you run functions like retractable landing gear, lights or gimbal control directly from the receiver.

Broad Compatibility

The AR7700 will work with these and many other multi-rotor flight controllers.

Controller Compatible AR7700 Receiver Modes
Pixhawk PPM, DSM (SRXL or Remote Receiver)
Vector PPM
BrainFPV PPM, DSM (SRXL or Remote Receiver)
CC3D PPM, DSM (SRXL or Remote Receiver)
Naze32 PPM, DSM (SRXL or Remote Receiver)
KK2.1.5 PPM
Multiwii SE 2.5 PPM
Naza M Lite PPM
Naza M V2 PPM
Naze32 Acro PPM, DSM (SRXL or Remote Receiver)
Quanton PPM, DSM (SRXL or Remote Receiver)
Revo PPM, DSM (SRXL or Remote Receiver)
Sparky PPM, DSM (SRXL or Remote Receiver)
SP Racing F3 PPM, DSM (SRXL or Remote Receiver)
Vortex Quad PPM, DSM (SRXL or Remote Receiver)

Remote Receiver Included

A small remote receiver is included for larger multi-rotor applications that could use the redundancy and path diversity of patented MultiLink™ technology. By mounting the remote receiver away from the main receiver with a different antenna orientation, the odds of experiencing signal fade from signal reflection or antenna polarization are substantially reduced.

Access to All Your Channels

When using the SRXL and Remote Receiver connections, the AR7700 will allow you to tap into as many channels as your transmitter can support. The PPM connection can support up to 8 channels.


Connect to the GND, 5V and RX line from the main or flex port on the CC3D to the Remote Rx port on the AR7700 to run DSM.

SP Racing F3

Connect the 3 pin servo connector on the 8 pin JST-SH cable to the IO2 port on the SP Racing F3 to the Remote Rx port on the AR7700 to run DSM.

Vortex Racing Quad

Connect the PPM cable from the Vortex to the PPM port on the AR7700.

Naze32 rev6

Connect to the GND, 5v, and pin 4 from the Naze to the Remote Rx port on the AR7700 to use DSM .

Perfect Match for AirWare Multi-Rotor Programming

Dedicated Multi-rotor Airware available for all Spektrum generation 2 transmitters including the DX6, DX7, DX9, DX18G2 and DX18 Stealth. This software upgrade was designed specifically for the multirotor enthusiast and offers tailored programming and setup options for multirotor platforms. Log onto the Spektrum community site to check for the latest AirWare updates for your transmitter.
(Available late October 2015)

Antenna Length: 6.97 in (177mm)
Band: 2.4GHz
Bind Method: Bind Plug
Channels: 18,8
Data Port: Yes
Failsafe: Yes
Flight Log Compatible: Yes
Height: 0.45 in (11.5mm)
Input Voltage: 3.5–9.6V
Length: 1.17 in (29.8mm)
Modulation: DSMX
Number of Receivers: 1 (Optional remote receiver makes 2)
Range: Full
Resolution: 2048
Rev Limiter: No
Telemetry: Compatible
Type: Serial receiver
Water-Resistant: No
Weight: 0.32 oz (9.15g); 0.49 oz (13.75g) with remote receiver
Width: 1.15 in (29.3mm)

Optional Accessories

$32.99  $29.99
$84.99  $74.99
In Stock
$21.99  $19.99



Product Support Tips

AR7700 FAQs

Can I use normal servos with my AR7700?

Yes; but only through the Gear, Aux1, and Aux2 ports (channels 5, 6, and 7). These are the only output ports on the AR7700 that can drive conventional (PWM) servos. The AR7700 cannot control conventional (PWM) servos for primary flight controls (channels 1 through 4).

I normally use a remote receiver with my flight controller, how is the AR7700 different/better?

Signal Path Diversity: Using only a single remote receiver does not offer RF signal diversity, so resistance to interference is reduced. The AR7700 can be used with its single internal receiver for short range (parkflyer) applications such as racing, or for full range performance with the most robust RF link the remote receiver can be added. Always re-bind after removing or adding the remote receiver.

Binding Ease: The AR7700 binds with a bind plug like other Spektrum receivers. A remote receiver requires an external method to bind. Some flight controllers enable this through the user interface; others require you to use a secondary receiver to bind the remote receiver.

Failsafe Setup: As with existing Spektrum receivers the AR7700 allows the setup of preset failsafe by pulling the bind plug after the receiver is in bind mode and before binding to the transmitter. Preset failsafe will output the settings you designate at binding if RF signal is lost so you don�t have to configure your flight controller for failsafe operation which varies among current controller offerings.

Wider Voltage Range: Remote receivers are designed to run at 3.3 volts. In order to run the remote most flight controllers use a 3.3 volt regulator on the board that may or may not have sufficient capabilities to support the remote receiver. The AR7700 operates in the same voltage range as any common receiver (4.5v-9.6v) so it can be powered with the same 5 volt supply that powers the flight controllers.

PPM Output: The AR7700 offers PPM output which you cannot get when running a remote receiver alone. PPM is widely implemented in many systems and offers the easiest path for many applications. Prime example is the Immersion RC Vortex; It�s compatible with the AR7700 out of the box with PPM, but if you want to run a remote receiver you have to build a cable and go through some configuration steps.

Transponder Power: On some aircraft like the Immersion RC Vortex there is nowhere to plug in a transponder for racing. The AR7700 provides extra ports available giving you a simple and direct option to power your transponder.

How does SRXL and Remote Receiver compare to S Bus?

SRXL and Remote Receiver are both digital protocols, much like S BUS. The AR7700 SRXL and Remote Receiver protocols are both capable of 11ms latency with 2048 resolution, and support up to 18 channels.

I have used SRXL with the AR9020 and AR12020, and AR12120, are these same as the SRXL on the AR7700?

It is very similar, but not the same: The SRXL featured in the X Plus receivers (AR9020, AR12020 and AR12120) do not have the ability to ensure proper timing for the channel outputs. Note that this is not a problem when used as intended with the X Plus module, but it could cause problems if trying to use the SRXL output to control a flight controller. Also, the AR7700 is backwards compatible with the X Plus module if you wish to have additional servo outputs, but it has the check built into the code to ensure proper timing with flight controllers.

I want to race my quadcopters without the secondary remote receiver; can the AR7700 be used without the supplied remote receiver?

Yes: The AR7700 can be used without the supplied remote receiver, but will be limited to parkflyer range. Note that parkflyer range is suitable for most racing applications, but if you want to fly far and low, or are flying a mid to large size model, it is always best practice to utilize the remote receiver.

The receiver number seems to indicate this is a 7 channel receiver, is that true?

No: Just like a standard 7-ch Spektrum receiver the AR7700 has 7 sets of pin-outs (connectors ports), but the number of channels is dependent on what transmitter you are using and what output you have selected. PPM output can support up to 8 channels, SRXL and Remote Receiver output can support up to 18 channels.

Example � DX6 will only support 6 channels, DX7 7channels, ect, on up to 18 channels with the DX18.

What does serial mean?

Most common servos use an analog PWM (pulse width modulation) data stream that only controls one function. �Serial� refers to a type of protocol that combines all the signals into one data stream (one wire). PPM combines all the control signals into one data stream (one wire) and supports 22ms latency for up to 8 channels. A digital protocol like SRXL or Remote Receiver steps up the performance with up to 18 channels @11ms and 2048 resolution. Serial protocols enable a 3 wire lead to supply power and all the command signals from the receiver to a flight control system. Serial protocols are not compatible with conventional PWM servos.

Product Support

Technical questions about this Spektrum product should be directed to Horizon Hobby's Product Support Department:

Horizon Hobby, LLC.
ATTN: Product Support

4105 Fieldstone Road
Champaign, IL 61822

To place a Horizon Hobby Support Inquiry please visit our Inquiry Form Support Phone:(877) 504-0233
Fax:(217) 355-1552

Sales Support

If you would like to purchase this product, please go to the Store Locator or contact the Horizon Hobby Consumer Sales Department:

Horizon Hobby, LLC.
ATTN: Consumer Sales

4105 Fieldstone Road
Champaign, IL 61822
Email: Sales Phone:(800) 338-4639
Fax:(217) 355-1552