The short answer: CHA PORTA-MOUNTS give the PORTA-MAST—and, through the documented reducer path, the CFM-34HD—a controlled base. Wheel and Hitch Mounts serve temporary vehicle sites; Top and Side Mounts serve bolted semi-permanent installations.
What should I decide before buying?
- Use Wheel Mount when a parked vehicle tire can fully secure the base plate.
- Use Hitch Mount with a compatible stationary 2 in receiver.
- Use Top Mount only on a sound horizontal structure and Side Mount only on a sound vertical structure.
- For CFM-34HD, add the complete current 3-inch reducer/sleeve system instead of dropping the narrower mast into a PORTA-MOUNT.
What must match during setup?
- PORTA-MOUNTS are bases, not feedpoints or antenna-matching components.
- The mount selected must match the PORTA-MAST diameter and installation path.
- CFM-34HD compatibility depends on the documented 3-inch reducer/sleeve kit.
- A mast that physically enters a sleeve is not automatically structurally approved.
What deserves a stop and recheck?
- Do not use a temporary vehicle mount on a moving vehicle.
- Confirm the structure or receiver can carry the mast, antenna, leverage, and wind load.
- Keep the fall zone and public space controlled.
- Lower the system before moving a vehicle or releasing a tire, hitch, or structural fastener.
How should I put it away?
- Inspect welds, plates, sleeves, fasteners, and coating after transport and use.
- Remove grit before inserting a mast or reducer.
- Replace bent or missing retention hardware.
- Store mount-specific fasteners with the matching mount.
Use the current CHA PORTA-MOUNTS instructions.
Open Porta_Mast_User_Guide_221115.pdf · Open the product page
