Product Overview
This is the air-side transmitter module of the TC403 imaging link, a compact 34x34x18mm board that pushes 1080p60 HD video and 640×512 thermal video over 25km of open air. The CNC aluminium alloy housing integrates a micro turbo fan and temperature-control protection so the power amplifier stays stable during long ground bench sessions. Input range is 11.1-40V with a JST1.0 4-pin harness carrying power, USB and UART, and the 25.5×25.5mm mounting pattern drops straight into standard FPV stacks. Four IPEX antenna ports cover 2.7-5GHz and 5-7GHz, and OSD is driven through Betaflight or INAV MSP.
Key Features
- 25km+ transmission distance with 5MHz COFDM channel bandwidth
- Max 33dBm EIRP (FCC 30dBm / CE 14dBm / SRRC 20dBm / MIC 25dBm variants)
- 1080p60 visible light plus 640×512@50fps thermal video input
- Only 30g at 34x34x18mm with 25.5×25.5mm stack mounting
- 36 channels spanning 2.700GHz to 6.900GHz, 4 x IPEX dual-band antenna ports
- 11.1-40V wide input, -20 to 60℃ operation, active fan cooling with thermal protection
Technical Specifications
| Model | SJ-TC403 VTX (J-TC403A air unit) |
|---|---|
| Frequency band | 2.7 ~ 7GHz |
| Channel bandwidth | 5MHz |
| Transmission distance | ≥25km |
| Transmit power (EIRP) | Max 33dBm; FCC <30dBm; CE <14dBm; SRRC <20dBm; MIC <25dBm |
| Video resolution | 1080p60fps / 720p60fps |
| Imaging resolution | Visible light 1080P@60fps / Infrared 640×512@50fps |
| Number of channels | 36 |
| Interface | JST1.0*4 (Power / USB / UART); camera MIPI 1/2/4 lane |
| Mounting | 25.5mm x 25.5mm |
| Dimensions | 34mm x 34mm x 18mm |
| Weight | ≤30g (22.41g typical) |
| SD card slot | Supported up to 1TB (kit version) |
| Power input | 11.1 ~ 40V (8 ~ 40V on SJ-TC403) |
| Max power consumption | 15W |
| OSD | Canvas mode, 3 updates per second |
| Flight controller | Betaflight, INAV (MSP DisplayPort / HD fonts) |
| Antenna ports | 4 x IPEX-1 (2.7-5GHz + 5-7GHz) |
| Cooling | CNC aluminium housing + micro turbo fan, thermal protection |
| Operating temperature | -20 ~ 60℃ |
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