Build from the base upward: The CHA CFM-34 puts a wire antenna more than 34 feet above the site while collapsing to 23 1/2 inches. At 2 lb 9 oz, it gives portable, HOA, and field operators practical height without committing the property or vehicle to a permanent tower.
Deployment sequence
- Seat the mast base fully against the selected mount.
- Attach and strain-relieve the antenna before raising the mast.
- Extend sections from the top down without forcing or over-pulling them.
- Route the wire so the mast is a support, not an unintended parallel conductor.
Before raising the antenna
- The published mast load is 1 lb; include every suspended feedpoint, wire, carabiner, and vertical pull in that decision.
- Use a documented 3/8-24 base mount and stabilize the complete footprint before raising the antenna.
- Compare the 34-foot footprint with CFM-16 before assuming taller is always easier or better.
Before transmitting
- Confirm every mast section, clamp, mount, adapter, guy line, antenna attachment, coax route, and RF-return conductor.
- Begin RF checks at low power after the final geometry is stable.
- Record the exact configuration so a successful setup can be reproduced.
- Keep the full mast and antenna fall zone away from people, power lines, structures, and traffic.
- Reduce height or lower the system when wind or wire tension makes the mast unstable.
Use the current CHA CFM-34 instructions.
