The SJ-TC403 is a complete 2.7–7 GHz HD imaging transmission kit — air unit, ground receiver, 4MP low-light camera and thermal camera — delivering simultaneous video and data links with strong anti-interference.
The SJ-TC403 imaging transmission kit from Shangzhi (Shenzhen) is a complete air-to-ground video system for drones, consisting of a VTX (video transmitter), an RBox ground receiver, a VIS visible-light camera, an IR thermal camera and matched antennas. Operating across 2.7–7 GHz with 36 selectable channels, the system transmits 1080p60 or 720p60 video while carrying telemetry data at the same time, with strong anti-interference performance for long-range flight. The VTX measures just 34 × 34 × 18 mm, weighs 22.4 g, accepts 8–40 V input and supports Betaflight and INAV flight controllers with canvas-mode OSD. The RBox ground unit records to a TF card up to 1 TB, outputs via HDMI or USB-C (DP) and runs from 9–30 V with an active fan. The 4 MP VIS camera (149° FOV, F1.8, 0.0001 lux) provides color day/night imaging while the 23 g thermal camera (720×576, 62.4° FOV, F1.0) adds true night vision — a rare combination in an FPV-class link. LHCP antennas (2 dBi air, 10 dBi ground) complete the kit.
Key specifications: System composition: VTX + RBox + VIS camera + IR camera + antennas -; VTX frequency: 2.7–7 GHz; VTX TX power (EIRP): FCC <30 dBm; CE <14 dBm; SRRC <20 dBm; MIC <25 dBm -; VTX video resolution: 1080p60 / 720p60 -; VTX dimensions / weight: 34×34×18 mm; 22.41 g -; VTX power input / consumption: 8–40 V; max 15 W.
Specifications
| Parameter | Value | Unit |
|---|---|---|
| System composition | VTX + RBox + VIS camera + IR camera + antennas | – |
| VTX frequency | 2.7–7 | GHz |
| VTX TX power (EIRP) | FCC <30 dBm; CE <14 dBm; SRRC <20 dBm; MIC <25 dBm | – |
| VTX video resolution | 1080p60 / 720p60 | – |
| VTX dimensions / weight | 34×34×18 mm; 22.41 g | – |
| VTX power input / consumption | 8–40 V; max 15 | W |
| VTX storage | TF card up to 1 | TB |
| Flight controller support | Betaflight, INAV; OSD canvas mode; 36 frequency points | – |
| RBox frequency | 2.7–7 | GHz |
| RBox interfaces | HDMI, USB Type-C (DP display), Type-C debug, UART EXP (3.3 V TTL) | – |
| RBox power input / consumption | 9–30 V, 2 A; max 11 W (with fan) | – |
| RBox storage | TF card up to 1 | TB |
| VIS camera | 1/1.88″ 4MP, 1080p60, FOV 149°, F1.8, 0.0001 lux, 11 g, 19×19×30 mm | – |
| IR camera | Thermal 720×576, FOV 62.4°, F1.0, 23 g, 22×22×38 mm | – |
| VTX antennas | 2x LHCP, 2 dBi, IPEX-1 (2.7–5 GHz + 5–7 GHz) | – |
| Ground antenna | LHCP, 10 dBi, SMA-J | – |
| Operating temperature | −20 to +60 | °C |
All specifications are taken from the manufacturer’s current datasheet.
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