> For the complete documentation index, see [llms.txt](https://docs.flytbase.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.flytbase.com/device-management/4g-enhanced-transmission-setup.md). # 4G Enhanced Transmission Setup ### Overview **4G Enhanced Transmission** combines the standard OcuSync RF video transmission with a 4G LTE link, allowing video, RTK differential data, and control commands to be carried over both links simultaneously. When the OcuSync signal is strong, the 4G link is maintained as a standby connection without active data transmission, preserving low-latency performance and minimizing data usage. When OcuSync becomes weak, blocked, or operates at long range, the 4G link automatically takes over to keep the mission running without triggering a Failsafe Return-to-Home (RTH). {% hint style="info" %} 4G Enhanced Transmission does not replace the OcuSync RF link. Both links run in parallel when enabled, with 4G acting as a redundant fallback only. {% endhint %} ### Transmission Behavior by Condition | Condition | OcuSync RF Link | 4G Link | Outcome | | ---------------------------------------------------- | --------------- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- | | Enhanced Transmission **ON** | Strong | Standby | OcuSync handles all video, RTK, and control data. 4G link stays connected without active data transmission. Mission continues uninterrupted. | | Enhanced Transmission **ON**, RF weak or interrupted | Weak / Lost | Active | 4G link automatically activates and takes over video, RTK, and control data. Drone seamlessly continues the mission. Failsafe RTH is **not** triggered. | | Enhanced Transmission **OFF** | Active | Inactive | OcuSync RF link only. No 4G fallback available if the RF link degrades. | | Enhanced Transmission **OFF**, RF lost | Lost | Inactive | Drone triggers the signal-loss action configured by the user during mission creation (e.g., Return-to-Home, Hover, or Land). For GTL, RTH is triggered. | ### Prerequisites Before starting, ensure you have the following: * **DJI 4G Dongles** — one for the Dock and one for the Drone. Dock 1/Dock 2 and Dock 3 use different dongles; they are **not** interchangeable. * **Physical SIM cards** — a physical SIM is recommended over eSIM for each dongle. * **APN credentials** — obtain the APN name, and username/password (if required) from your SIM card provider before setup. * **Windows PC** — required for the one-time dongle driver installation. * **Recommended firmware** — confirm both the Dock and Drone are on the latest recommended firmware using Flytbase Dashboard. {% hint style="info" %} Do not proceed without confirmed APN credentials from your carrier. An incorrect or missing APN will prevent the dongle from establishing a data connection. {% endhint %} ### How to Enable Enhanced Transmission? The end-to-end procedure has three parts: 1. Perform the on-device setup and initialization on the RC. 2. Turn on the Toggle for 4G Enhanced Mode in Device Settings under Drone Control on Flytbase Dashboard. 3. Verify the Connection. ### Step 1: Dongle SIM Setup This is a one-time process performed on a Windows PC for each individual dongle before installation in the field. #### 1.1 Insert the SIM Card Insert the physical SIM card into the dongle's SIM slot. #### 1.2 Install the Dongle Driver * Download the dongle driver package from the DJI-provided link. {% hint style="info" %} If the driver is not available, kindly reach out to {% endhint %} * Run `setup.exe` to install the driver. Follow the on-screen instructions. {% hint style="info" %} The driver installation UI may appear in Mandarin Chinese. Use Google Lens or a similar translation tool to navigate the prompts. {% endhint %} #### 1.3 Test Connectivity * Disconnect the PC from all internet sources (Wi-Fi and Ethernet). * Plug in the dongle (with SIM inserted) and wait approximately 20 seconds for the green LED to turn on. * Check whether internet is accessible through the dongle. * **If accessible** — the dongle is ready. Proceed directly to Step 2. * **If not accessible** — the APN needs to be configured manually. Continue to Step 1.4. #### 1.4 Configure APN Manually (if required) * Run `IG830apnsetting.exe` from the downloaded package. * The UI will appear in Mandarin Chinese — use a translation tool as needed. * Enter the **APN name**, and **username/password** if required by your carrier. These fields may be left blank if your carrier does not specify them. * Click the single button in the dialog to apply the settings. A terminal-style confirmation window will appear indicating success. * Unplug the dongle, wait a few seconds, then replug it. Wait approximately 20 seconds for the green LED. * Re-check internet connectivity through the dongle. {% hint style="info" %} This APN configuration process must be repeated individually for each dongle. Settings are stored per device and are not shared. {% endhint %} ### Step 2: Hardware Installation #### 2.1 Verify Controller Binding Before inserting the dongles, confirm that: * The **Dock is bound as Controller A** and the **RC is bound as Controller B** to the drone. #### 2.2 Insert the Dongles Insert the configured dongles into the dedicated 4G dongle sockets on both the Dock and the Drone, then power on both devices. * **DJI Dock / Dock 2** & **Dock3** — insert the dock's dongle into the dedicated 4G socket on the Dock chassis. Refer to the DJI Documentation for the exact socket location on your model. * **Drone** — insert the drone's dongle into the dedicated 4G socket on the aircraft body. Refer to the relevant DJI aircraft documentation for the exact socket location. {% hint style="info" %} Each dongle socket is model-specific. A Dock 1 dongle cannot be used in a Dock 2/Dock 3, and vice versa. {% endhint %} ### Step 3: On-Device Setup {% hint style="info" %} On-device setup from the RC is required only during the first-time initialization of Enhanced Transmission. After the service is initialized successfully and both the Dock and Aircraft show **Connected**, 4G Enhanced Mode can be managed directly from the FlytBase dashboard by enabling or disabling **Enable 4G Enhanced Mode**. {% endhint %} To perform the on-device setup, follow these steps: 1. **Reset Connections:** Ensure the RC is not connected directly to the aircraft, and no stale connections are active. 2. **Power ON System:** Power on the devices in the following order — **Dock → Aircraft → RC**. Confirm a live video feed is available. 3. **Connect Devices:** Connect the Dock to the Aircraft, then connect the RC to the Dock. Verify that the RC appears as Controller B and the Dock appears as Controller A. 4. **Open DJI Enterprise App:** On the RC, open the DJI Enterprise App. Select **Dock (Controller A)** and tap the **Spanner** icon at the bottom-right. 5. **Navigate to Enhanced Transmission Settings.** 6. **Trigger Initialization** (critical step): * If the toggle is already **ON**: turn it OFF, wait 10 seconds, turn it ON again, allow sufficient time for the connection to establish, and do not exit the page immediately. * If the toggle is **OFF**: turn it ON. If a pop-up appears stating *"Set first and then connect to service"*, tap **Change Settings**, navigate back, then re-enter **Enhanced Transmission Settings**. 7. **Enable Enhanced Transmission Service:** Toggle **Enhanced Transmission Service** to **ON** and wait 1–2 seconds. 8. **Verify in DJI Pilot App:** Open the DJI Pilot App, enter **Camera / Live View**, tap the **• • •** menu (top-right), and open **Enhanced Transmission Settings**. 9. **Validate Status:** Confirm that both **Dock** and **Aircraft** show **Connected**. 10. You can see the **4G icon** in the top-right corner, indicating that the 4G connection is active. Enhanced Transmission Settings: Connected status {% hint style="info" %} The initialization sequence in Step 6 is critical to initialise the Enhanced Transmission service. Do not skip or rush this process. DJI has confirmed that incorrect timing or sequence may prevent activation. {% endhint %} ### Enable 4G Enhanced Mode from Flytbase Dashboard #### 3.1 Confirm LTE Status Before enabling, verify that the connection statuses are showing correctly on the Dashboard: * Open the **FlytBase Dashboard** and navigate to the relevant drone's device card. * Confirm that both **Dock LTE** and **Aircraft LTE** show a **Configured** status. * Confirm that **Server Connection** shows as **Connected**. {% hint style="info" %} Do not enable 4G Enhanced Mode if Dock LTE or Aircraft LTE status is not showing as **Configured**. This indicates the dongle or SIM is not correctly set up. Revisit Step 1 to troubleshoot. {% endhint %} #### 3.2 Enable the Toggle * Turn on the Toggle for 4G Enhanced Mode in Device Settings under Drone Control. * The system will initialise 4G as a simultaneous link alongside the existing RF connection.

4G Enhanced Toggle

### Step 4: Verify the Connection Use any of the following methods to confirm 4G Enhanced Mode is active.
### Setup Video Follow the video below to complete the setup: {% embed url="" %} #### Via FlytBase Dashboard (Remote) The 4G connection status is displayed in three locations on the FlytBase Dashboard: * The **drone detail card** in the Device Management view. * The **device maintenance window**. * The **Flight Logs overview** section after a completed flight.