Caddx Ratel 2 FPV Camera: Is It Still a Good Analog Camera?

The Caddx Ratel 2 is a 19mm analog FPV camera with a large 1/1.8-inch starlight sensor, 1200TVL output and strong wide-dynamic-range performance. It is best suited to freestyle and general analog builds where low-light visibility matters more than the lowest possible weight.

I installed a Caddx Ratel 2 on a freestyle build for better low-light performance and the ground detail improved noticeably at dusk, but the image looked slightly soft until I refocused the lens for flying distance rather than the close-up test I’d used on the bench. Refocusing for the actual flying distance sharpened the picture significantly.

The current official specification lists a wide 5–40V input range, switchable PAL or NTSC and switchable 4:3 or 16:9 output. Always confirm the label on the delivered camera because older stock may have different documentation.

Ratel 2 specifications

Why the large sensor matters

A larger sensor can collect more light than a typical small analog camera sensor. This helps the Ratel 2 keep ground detail when the sky is bright and improves visibility in dusk, shaded forest or indoor locations.

It is still an analog camera. The final image is limited by the VTX, receiver and display. The large sensor improves the source image but cannot remove RF interference or power noise.

How to wire the Ratel 2

1. Connect camera positive to a supported regulated output or battery rail.
2. Connect ground to the same ground system as the flight controller and VTX.
3. Connect video output to the flight controller CAM input.
4. Connect the flight controller video output to the VTX.
5. Connect the menu board only when adjusting camera settings.

The wide voltage range does not remove the need for clean power. Direct battery power may add motor noise, while a regulated camera pad can provide a cleaner image.

Recommended starting settings

• Set the aspect ratio to match the goggles.
• Choose PAL or NTSC to match the receiver and DVR workflow.
• Start with WDR enabled.
• Keep sharpness at a moderate level.
• Use Auto scene mode for mixed daylight.
• Reduce saturation only when colours hide shadow detail.
• Save and exit before removing the menu board.

Ratel 2 vs Baby Ratel 2

Common Ratel 2 problems

Image becomes black and white too early

Check the scene or day/night setting. Auto mode may switch to monochrome in low light. Use Colour mode if you prefer colour and can accept more noise.

Bright sky looks good but ground is too dark

Confirm WDR is enabled, then reduce contrast or adjust exposure. Test through the actual goggles because DVR footage can look different.

Horizontal lines under throttle

Use a cleaner regulator, improve the main capacitor and route the video wire away from ESC and motor wiring.

Camera menu does not open

Check that the correct Caddx menu board is connected to the menu lead. A board from another brand may not use the same signal.

How to focus and protect the Ratel 2 lens

A camera can appear soft because the lens moved during shipping or a crash. Clean the front glass first. If the image remains soft at all distances, mark the original lens position, loosen the retaining material and rotate the lens in very small steps while viewing a detailed object.

Focus for the distance used during flight rather than for an object a few centimetres from the camera. After the image is sharp, secure the lens with a small amount of suitable non-corrosive material. Do not allow adhesive to run into the sensor housing.

• Use a lens protector that does not enter the field of view.
• Leave enough clearance for the selected camera angle.
• Check focus through the actual goggles.
• Inspect the lens after frontal impacts.
• Avoid overtightening screws against the camera housing.

The wide field of view makes propellers, frame edges or a protective cage more likely to appear in the image. Test the full view before final assembly. A small change in camera position can remove an obstruction without reducing protection.

Before the first full flight, compare the picture with the camera powered from the planned supply and from a clean bench supply. If the bench image is cleaner, improve the regulator, grounding or capacitor rather than changing image settings to hide electrical noise.

Verify the power and video format before tuning the image

Do not begin with brightness, contrast or WDR adjustments when the picture is rolling, losing colour or restarting. Measure the supply voltage at the camera while the motors are armed and while throttle is applied. A regulator can show the correct voltage at idle but dip when the ESC and VTX load increase.

Next, confirm that the goggles or receiver can handle the selected PAL or NTSC format. A format mismatch may produce a cropped, rolling or unstable image that looks like a damaged camera. Restore the Ratel 2 menu to a known format, then restart the camera and receiver before testing again.

If the image remains noisy, power the camera from a clean bench supply or another regulated pad. A cleaner test picture confirms that the camera is healthy and the drone power system needs better grounding, wire routing or capacitor filtering. This test is more reliable than changing image settings to hide electrical interference.

Frequently Asked Questions

Is the Ratel 2 digital?

No. It is an analog CVBS camera.

Can it run directly from a high-cell-count battery?

The current official listing gives a wide voltage range, but confirm the exact unit label and consider electrical noise before direct battery power.

Does it record video?

No. Recording is handled by the goggles, receiver DVR or a separate action camera.

Is it better than the original Ratel?

It improves image processing and exposure handling, but an existing original Ratel may not need replacement unless low-light or dynamic range is a problem.

Conclusion

The Caddx Ratel 2 remains a strong analog FPV camera for pilots who value wide dynamic range and low-light visibility. Match the aspect ratio, keep power clean and use the menu board to tune the picture instead of accepting poor default settings.