Inspect before retuning: The CHA 34HD REDUCER KIT is the missing mechanical interface between the narrower CFM-34HD base and the 3-inch CHA PORTA-MOUNT family. It keeps the mast centered and supported instead of letting a high-leverage field system ride loosely in an oversized mount.
After every deployment
- Inspect sleeve halves, lower stabilizer, protective cap, flange, and hardware.
- Remove grit from every mating surface.
- Keep the complete kit together.
- Replace distorted or missing parts; do not improvise shims.
When something moves or the SWR changes
- Stop transmitting and make the structure safe.
- Inspect the base and work upward through every loaded interface.
- Correct mechanical movement, moisture, damage, and feed-line strain before changing antenna tuning.
- Rebuild the documented geometry and restart at low power.
Do not return to service
- Do not overtighten and deform the mast.
- Control the fall zone and use the required guying.
- Lower the mast before removing the reducer or mount restraint.
Use the current CHA 34HD REDUCER KIT instructions.
Open CFM34HD_3_Inch_Reducer_Sleeve_Quick_Start_260716.pdf · Open the product page
