How to assemble an ARF RC aircraft step by step
A general ARF assembly workflow for many aircraft: dry fit, hinges, servo installation, power setup, CG, control checks and first-flight preparation.
DX20 20-Channel DSMX Transmitter with AR9020, Mode 2
Prices are intentionally not displayed on the site.
Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
DX20 20-Channel DSMX Transmitter with AR9020, Mode 2 is a Spektrum product intended for aircraft, helicopter, sailplane or multirotor radio installations where reliable control and setup clarity matter. This page presents the practical buying information a customer needs before ordering: fit, SKU, image, category, specifications and usage advantages.
The content is written for purchasing through RC-MODEL, without supplier prices or links to competing stores.
Key Advantages
- Organized under the Spektrum transmitter and radio-control range.
- Intended for aircraft, helicopter, sailplane or multirotor radio installations where reliable control and setup clarity matter.
- Check compatibility with DSMX equipment and the exact model requirements before ordering.
- Includes local product imagery and structured specifications for easier comparison inside RC-MODEL.
- Protocol information is surfaced so customers can match the product to their Spektrum radio system.
Core Specifications
- Manufacturer: Spektrum
- Brand: Spektrum
- Product Code: SPM20000
- Product Family: Spektrum transmitter and radio-control range
- Application: aircraft, helicopter, sailplane or multirotor radio installations where reliable control and setup clarity matter
- Compatibility Focus: Check compatibility with DSMX equipment and the exact model requirements before ordering.
- Spektrum Category: Radios / Aircraft / Transmitters
- Channels: 20
- Band: 2.4GHz
- Modulation: DSMX
- Telemetry: Telemetry Compatible
- Receiver: AR9020 9-Channel DSMX
- Frame Rate: 11ms frame rates with capable receivers
- Model Memory: 250
Relevant RC Academy guides
Learn before you buy
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
Servo selection: torque, speed, gears and voltage
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
How to balance an RC aircraft and find the correct CG
One of the most important setup guides: find the CG, install the flight battery, balance the aircraft and avoid nose-heavy or tail-heavy surprises.
Mandatory pre-flight checks for safer RC flying
A repeatable inspection routine for control direction, radio range, failsafe, battery, fasteners, propeller, CG and field readiness.
How to perform the first test flight of an RC aircraft
Ground checks, takeoff planning, trim passes, battery timing and first landing strategy for a new or repaired RC aircraft.
| Technical Specifications | |
| Manufacturer | Spektrum |
| Brand | Spektrum |
| Product Code | SPM20000 |
| Spektrum Category | Radios / Aircraft / Transmitters |
| Product Family | Spektrum transmitter and radio-control range |
| Application | aircraft, helicopter, sailplane or multirotor radio installations where reliable control and setup clarity matter |
| Compatibility Focus | Check compatibility with DSMX equipment and the exact model requirements before ordering. |
| Technology | Voice Alerts |
| Transmitter (Tx) Battery Type | 4000mAh LiPo |
| Band | 2.4GHz |
| Channels | 20 |
| Modulation | DSMX |
| Range | Full |
| Telemetry | Telemetry Compatible |
| Resolution | 2048 resolution |
| SD Card/Airware Capable | Yes |
| Receiver | AR9020 9-Channel DSMX |
| Frame Rate | 11ms frame rates with capable receivers |
| Model Memory | 250 |
Tags: Spektrum, SPM20000, Spektrum transmitter and radio-control range, Spektrum Catalog, Spektrum Transmitters, Spektrum Air Transmitters, Spektrum Aircraft Electronics, RC-MODEL