Fit is only the first check: 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.
Documented relationships
- 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.
Interfaces to verify
- 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 compatibility does not mean
- A matching thread or tube diameter does not prove structural capacity.
- A stable mount does not replace the required feed, matching, radiator, or RF-return components.
- An adapter does not transfer the highest rating of one product to the rest of the chain.
- Use the exact antenna, height, load, wind, and guying limits from every current guide.
Use the current CHA PORTA-MOUNTS instructions.
Open Porta_Mast_User_Guide_221115.pdf · Open the product page
