Product Overview
The RBox is the ground end of the TC403 link, a rugged receiver box that pairs with the VTX over 2.7-7GHz and outputs live HD video to HDMI monitors, USB-C DP displays or phones and tablets. It records the downlink to a TF card of up to 1TB and provides UART expansion at TTL 3.3V for telemetry or control integration. A dedicated keypad board drives the on-screen menu for channel selection, recording and firmware upgrade, while a 5V fan header keeps the receiver cool in the field. Power input is 9-30V at 2A with 11W typical consumption when the fan is running.
Key Features
- 2.7-7GHz dual-band receiver with 36 matched channels for the TC403 air unit
- Simultaneous HDMI and USB 3.2 Type-C DisplayPort video output
- Onboard TF recording up to 1TB with DVR key on the keypad
- 9-30V DC input, 11W with fan, 5V/200mA fan header included
- UART expansion at TTL 3.3V plus USB 2.0 debug port for firmware upgrades
- Pairing and status via dual-colour LED and buzzer tones (weak signal, low voltage, upgrade)
Technical Specifications
| Model | SJ-TC403 RBox (ground receiving station) |
|---|---|
| Frequency band | 2.7 ~ 7GHz |
| Channel bandwidth | 5MHz |
| Channels | 36 |
| SD card slot | TF card, up to 1TB |
| Video output | HDMI + USB 3.2 Type-C (DP alt mode display) |
| USB 1 (Debug) | USB 2.0, Type-C to USB-A for firmware upgrade, Type-C to Type-C for mobile display |
| USB 3 (UART) | Serial port, TTL level 3.3V |
| Power input | 9 ~ 30V, 2A (DC jack) |
| Max power consumption | 11W with fan |
| Fan interface | 5V, 200mA (SH1.25-2P) |
| Keypad interface | SH1.0-3P to dedicated keypad (D-pad, OK, BACK, DVR, CF) |
| Antenna ports | 2 x 2.7-5GHz + 2 x 5-7GHz, SMA |
| RTC | Onboard RTC battery |
| Indicators | Dual-colour LED (red = unpaired, flashing = pairing, green = linked) + buzzer |
| Dimensions (PCB) | 109mm x 40.5mm |
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