Smart tensioning guy ropes

This general guide will show you how to effectively set the required length of the guyrope, tension it, and secure it for long-term installation.

The procedure is suitable both for the installation of simple masts and for large antenna systems with lattice towers.

  1. Unscrew the turnbuckle to the maximum length.
  2. Install the turnbuckle to the ground anchor.
  3. Thread the rope through the upper eye/thimble.
  4. Install the Loop Cleat Tensioner to its free end. Use CL234 for ropes 6 to 11 mm (1/4" to 1/2") or CL223 for ropes 3 to 6 mm (1/8" to 1/4").
  5. Set the required length of the guyrope or adjust its length gradually. Advantageously, you can use a cleat tensioner, and its easy sliding on the rope. The procedure will differ depending on the method of installation of the mast/tower and guyropes (lifting the folded mast from the ground, gradual extension of the telescopic mast, installation of the mast in parts, ...).
  6. In the working position (before the final tensioning), the tensioning part should look something like this:
  7. After completing the adjustment, tension the rope with a cleat tensioner.
  8. Install the rope clamp and tighten it firmly:
  9. You can now release the cleat tensioner and tie at least 2 safety knots (Double Half-hitch):
  10. Tighten the knots firmly and secure the free end of the rope with cable tape (for ropes up to approx. 5 mm - 3/16 ") ropes or install a second securing clamp.
  11. Tighten the guy rope to the required tension using a turnbuckle:
  12. Tighten the rope clamps firmly. If you use tensioners with lock nuts (like the jaw-jaw version on the picture), tighten these nuts as well.
  13. Before you begin, please read our articles Basic Instructions to Guy with Synthetic Ropes and Recommended Installation Procedure.



  • US representatives 1. 9. 2023

    We are happy to announce that our team is expanding in North America with addition of Mark Pride, K1RX (Eastern Region) and Ken Bush, KB5YBI (Western Region), both of which will provide sales and technical support to our ever growing customer base plus our distribution/dealer channel consisting of R&L Electronics, GigaParts and DX Engineering. Feel free to contact them directly with any questions you might have regarding the entire Mastrant product line.  Mark:This email address is being protected from spambots. You need JavaScript enabled to view it.  Ken:This email address is being protected from spambots. You need JavaScript enabled to view it.

  • Rope tensioning carabiner CamJam (Aluminum) 20. 12. 2022

    Just before the end of the year we put this new product on sale - Rope tensioning carabiner CamJam (Aluminum), which combines a strong carabiner with a cam locking mechanism.

  • Mastrant-R 2 mm (1/16 in.) on sale 2. 12. 2022

    Have you noticed that we also sell this popular rope Mastrant-R, this time in 2mm diameters? Take a look here.

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