Build from the base upward: CHA PORTA-MAST turns a home, RV, or vehicle site into a repeatable antenna position without a permanent tower. The 15, 20, and 25 ft aluminum masts telescope down below eight feet and accept documented ground-sleeve, wall, deck, wheel, or hitch installations.
Deployment sequence
- Confirm a clear area at least twice the mast-and-antenna height for the semi-permanent ground procedure.
- Keep a two-handed grip until each internal interlock has fully engaged.
- Attach HF wire through the swivel ring or carabiner as the guide shows.
- Never clamp brackets directly to the telescoping mast tubing.
Before raising the antenna
- Use 20 or 25 ft when the 3 in base and larger published wind-area capacity are required.
- Choose Wheel or Hitch Mount for temporary vehicle-supported deployment; choose Ground Sleeve, Top Mount, or Side Mount for the documented semi-permanent paths.
- Add the Mast Adapter only for antennas or rotators that require its 3/8-24 socket or 1 in by 6 in shaft.
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.
- Never raise or lower the mast near power lines or without control of the fall zone.
- Do not install during unsafe wind; get another person when the weight or site demands it.
Use the current CHA PORTA-MAST instructions.
Open Porta_Mast_User_Guide_221115.pdf · Open the product page
