Description

The Crack Series Pro 6-channel receiver is a compact, lightweight solution for small to mid-size RC aircraft using Spektrum DSMX or legacy DSM2 transmitters. At approximately 4.1 g, it combines dual diversity antennas, automatic failsafe storage, Quick Connect brownout detection, and a wide 3.5V to 8.5V operating range for dependable control without unnecessary size or weight.

Crack Series Pro Receiver Overview

DSMX / DSM2 Compatible

Channels

6 Channels

Protocol

DSMX / DSM2

Frequency

2.4GHz

Input Voltage

3.5V–8.5V

Dimensions

29 × 19 × 11 mm

Weight

Approximately 4.1 g

Dual Diversity Reception

Two diversity antennas independently monitor reception to help maintain a dependable control connection. Extended antenna leads allow the exposed antenna sections to be positioned in different locations and orientations inside foam, carbon-reinforced, or metal-equipped aircraft.

Control and Safety Features

Automatic failsafe-position storage during binding

Quick Connect with brownout detection

Red LED indicates recorded signal holds

Dual antennas with independent signal monitoring

Wide 3.5V to 8.5V operating range

Package and Construction

Receiver: Crack Series Pro 6-channel DSMX/DSM2-compatible receiver

Antennas: Two extended diversity antenna leads

Protective Covering: Black or clear PVC shrink tubing

Included: Bind plug

Documentation: Printed quick-reference guide

Automatic Failsafe Setup: After a successful bind and valid transmitter signal are detected, the receiver stores the current positions of all channels. If the signal is lost for more than two seconds, the receiver moves the channels to those stored positions. Place all transmitter controls in the desired failsafe positions before binding.

Binding Procedure

1 Set the transmitter controls to the positions you want stored for failsafe operation.

2 Insert the bind plug into the receiver.

3 Supply power to the receiver. The LED will begin flashing rapidly.

4 Maintain at least 2 meters of separation and place the transmitter into bind mode.

5 When the receiver LED remains solid, binding is complete.

6 Disconnect power and remove the bind plug before normal operation.

Binding Distance: Some newer Spektrum transmitters, including NX and iX series radios, may require additional distance from the receiver during binding. If binding is unsuccessful, gradually increase the separation. In some installations, up to approximately 30 feet may be required.

Installation and Preflight: Position the two antennas in different orientations whenever possible. Keep the exposed antenna sections away from carbon fiber, batteries, motors, ESCs, and large metal components. Secure the receiver to prevent movement or strain on the servo connections, then complete a transmitter range check and confirm correct failsafe operation before flying.

Compatibility Notice: This receiver is not manufactured or endorsed by Spektrum. Crack Series receivers are independently tested for compatibility with Spektrum DSMX and DSM2 protocols only. It is not compatible with JR DMSS or other radio-system protocols.

Setup Resources

Receiver Binding and ESC Calibration Video Shop Receivers and Radios

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Videos

Receiver Binding and ESC Calibration Video (HOW TO)

Process used to binding your CSP Receiver(s) and how to Calibr...

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11 Reviews

5
Solid, and Reliable

Posted by Jim on Oct 17th 2025

I have quite a few of these and honestly, I put them in and never really think about them again. They are super reliable and I've never had an issue with thousands of flights on them. The only one that I killed was in saltwater but that was my fault.
5
Micro Receiver

Posted by Drew on Jul 4th 2021

Love this little receiver. Probably about as small as you could go, and works great. For the price, 100% worth.
5
Receiver

Posted by Darrin Levitan on May 20th 2020

It works great
4
Receiver

Posted by Jason Ille on May 6th 2020

Would be 5 stars but the price is not cheap
5
Nice compact light weight Rx

Posted by TorqueRoller on Nov 21st 2019

This is a nice compact, affordable, and light weight Rx for those builds where weight and size matters. No problems with binding and the control link has seemed flawless with no glitches or failsafes. I haven't flown it to the limits of its range, but it has worked flawlessly within a few hundred feet.
5
Reciever micro 6 ch

Posted by bob adams on Nov 3rd 2019

worked well
5
Micro receiver

Posted by gregory frank on Oct 18th 2019

Very small and light, easy to bind and set up. Works great.
5
Best lightweight little receiver of used

Posted by David J Mettetal on Mar 10th 2019

Best lightweight little receiver of used
5
Good product

Posted by Rambo on Feb 1st 2019

Thanks
5
Micro RX 6ch Spektrum 2.4GHz DSMX/DSM2

Posted by Saltflyer on Oct 16th 2018

Awesome Rx!! Worked perfectly - no problems at all - rock solid. Will buy another with my next TH plane.