1. Product Overview
The MASPRO RSG25-P Mast Branch Lock Bracket is a robust hardware component designed for securely mounting various equipment to a mast. It is specifically engineered for compatibility with masts having a diameter of 1.0 inch (25.4 mm). The bracket features a durable die-cast aluminum ring and a hot-dipped zinc plated fitting, ensuring resistance to corrosion and long-term reliability in outdoor environments.

A clear view of the MASPRO RSG25-P Mast Branch Lock Bracket, showcasing its design and construction. This bracket is used for securely attaching equipment to a mast.
2. Package Contents
Upon opening the package, verify that all components are present and undamaged. The MASPRO RSG25-P package typically includes:
- 1 x MASPRO RSG25-P Mast Branch Lock Bracket (consisting of the main ring and stopper fitting)
- Necessary fasteners for assembly (e.g., bolts, nuts, washers)

This image provides a visual reference for the size of the RSG25-P bracket's ring component, shown held in a hand, indicating its compact dimensions.
3. Safety Information
Please read and understand all safety instructions before installation. Failure to follow these instructions may result in injury or damage to property.
- Professional Installation Recommended: If you are unsure about any part of the installation process, consult a qualified professional.
- Tool Safety: Use appropriate tools for the job and ensure they are in good working condition. Wear safety glasses and gloves.
- Working at Heights: Exercise extreme caution when working at heights. Use stable ladders or scaffolding and have a spotter if possible.
- Electrical Hazards: Be aware of power lines and other electrical hazards when installing outdoor equipment. Maintain a safe distance.
- Weight Limits: Ensure the mast and the bracket can safely support the weight of the attached equipment.
- Secure Fastening: All fasteners must be tightened securely to prevent the bracket and attached equipment from becoming loose due to wind or vibration.
4. Setup and Installation
This section guides you through the proper installation of the MASPRO RSG25-P Mast Branch Lock Bracket. Ensure your mast has a diameter of 1.0 inch (25.4 mm) for proper fit.

This diagram illustrates the key components and dimensions of the RSG25-P bracket. It shows the main ring (labeled 1) and the stopper fitting (labeled 2), along with measurements like the 69mm outer diameter and 43mm height.
- Prepare the Mast: Identify the desired mounting location on your mast. Ensure the surface is clean and free from obstructions. The mast diameter must be 1.0 inch (25.4 mm).
- Assemble the Bracket: The bracket consists of two main parts: the main ring (1) and the stopper fitting (2). Position the main ring around the mast at the desired height.
- Attach the Stopper Fitting: Place the stopper fitting (2) against the main ring, aligning the bolt holes. Insert the provided bolts through the holes and secure them with nuts and washers.
- Tighten Fasteners: Using appropriate tools, gradually tighten all bolts. Ensure the bracket is firmly clamped to the mast without over-tightening, which could damage the mast or bracket. The bracket should not be able to slide or rotate freely.
- Verify Stability: After tightening, gently attempt to move the bracket to confirm it is securely fastened.
- Attach Equipment: Once the bracket is securely installed, you can proceed to attach your desired equipment (e.g., antenna, satellite dish arm) to the bracket's mounting points. Ensure the equipment is also securely fastened to the bracket.
5. Operating and Use
The MASPRO RSG25-P bracket is a static mounting component. Its "operation" involves maintaining a secure and stable connection for your mounted equipment.
- Secure Mounting: Ensure that any equipment attached to the bracket is properly secured according to its own installation instructions.
- Load Distribution: Avoid placing excessive or uneven loads on the bracket that could compromise its stability or the integrity of the mast.
- Environmental Factors: Be aware that strong winds, heavy snow, or ice can put additional stress on the bracket and mast. Regular inspections are recommended.
6. Maintenance
Regular maintenance helps ensure the longevity and safety of your MASPRO RSG25-P Mast Branch Lock Bracket.
- Periodic Inspection: At least once a year, or more frequently in harsh weather conditions, inspect the bracket for any signs of wear, corrosion, or damage.
- Check Fasteners: Verify that all bolts and nuts are still tight. Re-tighten if any looseness is detected.
- Cleanliness: Remove any accumulated dirt, debris, or corrosive substances from the bracket using a soft cloth and mild detergent. Rinse thoroughly and dry.
- Corrosion Check: Although the fitting is hot-dipped zinc plated for corrosion resistance, inspect for any signs of rust or material degradation, especially in coastal or industrial areas.
7. Troubleshooting
If you encounter issues with your MASPRO RSG25-P bracket, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Bracket feels loose on the mast. | Fasteners are not sufficiently tightened. Incorrect mast diameter. | Ensure mast diameter is 1.0 inch (25.4 mm). Re-tighten all bolts securely. If the mast is too small, the bracket will not secure properly. |
| Signs of rust or corrosion. | Exposure to harsh weather conditions. Damage to protective coating. | Clean the affected area. Apply a rust-inhibiting primer and paint if necessary. Consider replacement if corrosion is severe. |
| Equipment attached to bracket is unstable. | Bracket not securely mounted. Equipment not securely attached to bracket. | Verify the bracket is tightly clamped to the mast. Ensure the equipment itself is properly fastened to the bracket's mounting points. |
8. Specifications
| Model: | RSG25-P |
| Brand: | MASPRO |
| Compatible Mast Diameter: | 1.0 inch (25.4 mm) only |
| Ring Material: | Die-cast aluminum |
| Fitting Material: | Hot dipped zinc plating |
| Color: | Silver |
| Item Weight: | 0.1 Kilograms |
9. Warranty and Support
MASPRO products are manufactured to high-quality standards. For specific warranty information, please refer to the documentation provided with your purchase or visit the official MASPRO website. For technical support or inquiries, please contact MASPRO customer service through their official channels.
Please retain this manual for future reference.