Julia Austin 107 Report post Posted April 13, 2011 Terrain slope restrictions for the 80m tower are +/- 3 degrees, compared to +/- 5 degrees on the 60m tower. The terrain slope limit on the 80m tower is geometric, not structural, and has to do with the length of the 80m gin pole and jumper struts. For more information, see the 80m Installation Manual. Quote Share this post Link to post Share on other sites