DJI C1 (Model: DLG30A1702) Teardown & Wireless Specs: Inside FCC ID SS3-DLG30A1702

Introduction

The C1 by SZ DJI TECHNOLOGY (Model: DLG30A1702) exemplifies DJI’s expertise in developing advanced wireless controllers, designed to deliver reliable and precise command over their drone ecosystems. As a core interface between user intent and aerial maneuver, the C1 is engineered for robust connectivity, low-latency response, and ergonomic operation. Its FCC certification, under FCC ID SS3-DLG30A1702 (grant date: none), is pivotal—it legally authorizes the device for sale and operation within the United States, confirming it meets stringent RF emission and electromagnetic compatibility standards set by the FCC.

This deep-dive explores the C1’s key features, wireless specs, and internal engineering. We’ll dissect the device’s architecture through detailed teardown analysis, interpret its regulatory filings, and clarify what sets the C1 apart in terms of wireless performance and compliance. Whether you’re a tech enthusiast, engineer, or simply curious about the technology that powers DJI’s controllers, this article provides an authoritative look at the C1’s hardware, RF specs, and regulatory standing.

Key Features & Specifications

While official detailed specifications for the DJI C1 (Model: DLG30A1702) remain limited in public filings, a close examination of the device and its FCC documentation reveals several core features and design philosophies expected of a high-performance drone controller:

• Advanced Wireless Connectivity
• Operates in the 2.4 GHz ISM band, supporting robust communication with drone platforms.

• Likely utilizes proprietary RF protocols or standards such as Wi-Fi or Bluetooth for control and telemetry (see frequencies section for specifics).

• Precision Control Assemblies

• Dual joystick mechanisms with high-quality potentiometers or Hall effect sensors ensure accurate, responsive input for nuanced drone maneuvering.

• Multiple tactile switches for auxiliary functions and customizable commands.

• Integrated GNSS Receiver

• Inclusion of a u-blox M8030-KT GNSS chip provides support for GPS, GLONASS, BeiDou, and QZSS, enabling advanced positioning, geofencing, or return-to-home features.

• High-Quality PCB Design

• Multi-layer (4-6 layers) PCB construction with ENIG finish for durability and signal integrity.

• Careful separation of analog/RF and digital domains, with robust ground pours and stitching vias to minimize EMI.

• Rechargeable Power System

• Large integrated LiPo battery for extended operation, with dedicated power management ICs and DC-DC converters for stable supply to critical circuits.

• Modular and Serviceable Architecture

• Multiple FPC/FFC and JST-style connectors facilitate assembly, modularity, and repairability.

• Test points and headers for factory programming, calibration, and diagnostics.

• EMI/RFI Shielding

• Use of metal shield cans and meticulous PCB layout to protect sensitive RF and processing sections, ensuring reliable operation even in electromagnetically noisy environments.

• USB Connectivity

• Presence of USB Type-A or micro-USB connector for charging, firmware updates, or data transfer.

Benefits in Practice:
– Reliability: Multi-layer PCBs, robust shielding, and high-quality components translate to dependable performance and minimal signal loss.
– Precision: Joystick assemblies and GNSS integration enable fine control and advanced navigation features.
– Safety and Compliance: Adherence to FCC standards ensures safe operation and compatibility with other wireless devices.

Note: Although some specific technical details are not disclosed in public documentation, the observed internal design and component choices are consistent with industry-leading remote controllers used in professional and enthusiast drone applications.

Operating Frequencies

The C1 by SZ DJI TECHNOLOGY (Model: DLG30A1702) is certified under FCC ID SS3-DLG30A1702 to operate on the following frequencies and output power levels:

Key Takeaways:
– 2.4 GHz ISM Band: This spectrum is widely used for Wi-Fi, Bluetooth, and proprietary RF systems, offering a balance of range, penetration, and data throughput.
– Output Power: 93–94 mW output is typical for controllers, providing a strong, reliable link without exceeding regulatory limits.
– Regulatory Compliance: Adherence to FCC Rule Parts 15C12.408 and 15C2 ensures legal operation and minimal risk of interference with other wireless devices.

These frequency and power parameters are critical for understanding the device’s intended range, interoperability, and suitability for environments with competing RF signals.

Technology Deep Dive

The C1’s wireless subsystem is built around the 2.4 GHz ISM band, a mainstay for both Wi-Fi and Bluetooth, as well as proprietary drone control protocols. While the equipment class and filings do not specify a particular wireless standard, the chosen frequencies, output power, and PCB design are indicative of a high-performance, low-latency RF link optimized for real-time drone operation.

Wireless Architecture & Implications:
– Performance & Range: Operation in the 2.4 GHz band balances moderate range with resistance to interference. The controller’s power output (up to 94 mW) ensures reliable communication in open environments and moderate urban settings.
– Interference Management: The use of shielding, ground pours, and selective filtering minimizes susceptibility to EMI, a common challenge in crowded RF environments.
– Power Consumption: Efficient DC-DC converters and selective activation of RF modules help extend battery life without sacrificing link reliability.
– Precision Control: The integration of a dedicated GNSS receiver (u-blox M8030-KT) enables advanced features such as geolocation, return-to-home, or flight path recording, enhancing both safety and user experience.

Test reports and internal photos corroborate the use of multi-layer PCBs, robust shielding, and careful component selection—all hallmarks of a design focused on maximum RF integrity and low-latency control.

In-Depth Internal Component Analysis / Teardown

Main PCB, Battery, and Joystick Assemblies

The internal construction of the C1 controller showcases DJI’s commitment to quality and reliability. The right half reveals a densely populated black PCB featuring several prominent integrated circuits likely serving as the main microcontroller, RF transceivers, and power management units. The strategic placement of these ICs—particularly near coaxial cable connectors—suggests a well-segmented RF front end, crucial for maintaining signal integrity. The presence of dual U.FL connectors and routed coax cables implies robust support for dual-band antennas, optimizing both control and telemetry. On the left, the rear housing and substantial LiPo battery pack indicate a focus on long operational endurance. Modular wiring harnesses, FPC connectors, and prominent joystick assemblies with precision position sensors reflect a design built for both performance and maintainability. The use of a black ENIG-finished PCB, multiple ground pours, and stitching vias further reinforces the device’s high-quality engineering and EMI resilience.

Shielded RF Section and Joystick Mechanisms

A closer look at the controller’s internal electronics reveals both mechanical and electronic sophistication. The right side of the image is dominated by a multi-layer green PCB, populated with several ICs and a large metal shield can—indicative of a protected RF or processing subsystem. The shield ensures critical wireless circuits are isolated from external EMI, a cornerstone of reliable drone control. Multiple wire harnesses connect the joystick modules, which themselves are mechanically intricate, likely leveraging Hall sensors for precise, drift-free input. The PCB layout features dense routing and numerous stitching vias, underscoring careful attention to signal integrity and grounding. Local power regulation is evident from the presence of large capacitors and inductors, ensuring clean, stable power for sensitive RF and logic circuits. The overall assembly balances durability, EMI protection, and modular design, all essential for high-stakes remote control applications.

GNSS Receiver Integration

This close-up view highlights the u-blox M8030-KT GNSS receiver, a critical component for advanced navigation and positioning. The chip, housed in a QFN package, is renowned for its high sensitivity and low power consumption, supporting multi-constellation satellite systems (GPS, GLONASS, BeiDou, QZSS). Surrounding the GNSS IC are precision SMD capacitors, a crystal oscillator for accurate timing, and robust ground pours with stitching vias to minimize RF noise and ensure high signal fidelity. The black ENIG-finished PCB and controlled impedance traces point to meticulous RF design. The integration of this GNSS solution enables the controller to deliver features such as real-time positioning, enhanced safety functions, and geo-awareness—capabilities increasingly vital in professional drone operations.

USB Connectivity and Power Management

Examining another section of the internal PCB reveals a dense array of surface-mount components, connectors, and test points. A visible USB port (Type-A or micro-USB) provides a versatile interface for charging, firmware updates, or data exchange. Multiple FPC/FFC connectors and labeled power rails (e.g., VCC_3V3, VCC_BAT) indicate a modular, serviceable architecture. The board layout demonstrates careful separation of RF/analog and digital domains, with numerous ground stitching vias and copper pours for EMI control. Several inductors and high-capacitance MLCCs suggest the use of switching regulators for efficient power distribution. The presence of oscillators and clearly labeled test points further supports robust manufacturing and field servicing. This section exemplifies DJI’s approach to building reliable, high-performance electronics suitable for demanding environments.

Regulatory Insights & FCC Filing

The FCC ID SS3-DLG30A1702 is more than a regulatory formality—it is a hallmark of the C1’s compliance with US standards for electromagnetic interference and RF emissions. This certification, registered with the FCC (grant date: none), confirms the device has undergone rigorous testing to ensure safe, interference-free operation within designated frequency bands.

FCC filings typically include:
– Test Reports: Detailed measurements of RF emissions, conducted and radiated spurious emissions, and immunity to interference.
– EMC & RF Exposure Documentation: Verifies compliance with human exposure limits (SAR, MPE) and electromagnetic compatibility.
– Internal and External Photos: Allowing verification of antenna placement, shielding, and overall construction.
– User Manuals & Schematics: Outlining operational guidelines, safety instructions, and circuit block diagrams.
– Labeling & Compliance Statements: Ensuring end users are informed of legal usage conditions.

For the C1, these filings demonstrate that SZ DJI TECHNOLOGY has engineered the device to meet or exceed regulatory thresholds, supporting both user safety and coexistence with other wireless equipment in the 2.4 GHz band.

Potential Use Cases & Target Audience

With its advanced wireless architecture, precision controls, and integrated GNSS, the DJI C1 (Model: DLG30A1702) is optimized for a range of demanding applications:

• Professional Drone Pilots
  Those operating in commercial aerial photography, surveying, or inspection benefit from the C1’s robust RF link, precision joystick assemblies, and reliable positioning features, ensuring safe and responsive flight in complex environments.

• Aerial Enthusiasts and Hobbyists
  Tech-savvy users seeking high-performance, customizable control for recreational drones will appreciate the controller’s ergonomic design, modular construction, and advanced connectivity.

• Developers and Integrators
  The C1’s modularity, test points, and diagnostics make it appealing for engineers developing custom drone solutions or integrating advanced telemetry and positioning capabilities into specialized platforms.

While the FCC filings do not specify a target audience, the design and feature set clearly position the C1 for users who demand reliability, precision, and regulatory compliance in wireless remote control applications.

Conclusion

The DJI C1 (Model: DLG30A1702), certified under FCC ID SS3-DLG30A1702, embodies the intersection of advanced wireless engineering, robust regulatory compliance, and user-centered design. Its multi-layer PCB architecture, integrated GNSS, and high-quality components ensure dependable operation in demanding environments. The FCC certification not only legitimizes its sale and use in the US but also underscores DJI’s commitment to safety and performance. For professionals, enthusiasts, and developers alike, the C1 stands as a testament to what modern RF controller technology can achieve—setting a high bar for reliability, feature integration, and regulatory adherence in the drone industry.

Related Documents

• Int Photos
• Ext Photos
• Fcc Id Label