Fit is only the first check: The CHA CFM-34HD is the heavy-duty temporary mast for operators who need real field height with more load capacity. It extends to 33 ft 7 in, collapses to 5 ft 7 1/2 in, weighs 4 lb 13 oz, and carries a published 6 lb limit when the height, antenna, wind, and guying rules are respected.
Documented relationships
- CHA SPIKE MOUNT is approved only with the CHA 34HD COLLAR installed.
- CHA SURVEYOR-A supports the mast shoulder directly and does not use the collar.
- Every PORTA-MOUNT path requires the complete CHA 34HD REDUCER KIT.
- MPAS/BV vertical configurations require guying whenever a section is extended and are limited to three extended sections, about 19 ft.
- SS25 and TDL require guying and no more than two extended sections, about 14 ft.
- The guide explicitly excludes UCM and Jaw Mount as CFM-34HD bases.
Interfaces to verify
- Choose it when a 1 lb CFM cannot carry the documented antenna or feedpoint.
- Plan transport around the 5 ft 7 1/2 in collapsed length.
- Use the 21 in CHA SPIKE MOUNT only with the mandatory CHA 34HD COLLAR; use CHA SURVEYOR-A without that collar; use any PORTA-MOUNT only through the complete CHA 34HD REDUCER KIT.
- Reduce load and use guying for tall, high-area, or windy configurations even below the nominal 6 lb limit.
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 CFM-34HD instructions.
