How the documented system works
Use the greatest safe, practical center and end height the site can support, keep the wire away from terrain and conductive objects, and orient the broadside direction deliberately. Change bands by lowering and resetting both links.
The boundary that prevents mistakes
No portable height, compass bearing, or link state guarantees a contact. Propagation, terrain, polarization, losses, station power, and the other station remain outside the product guide’s promise.
Use this field sequence
Survey the site first, choose the desired broadside direction, build the selected band symmetrically, verify SWR at final height, log the geometry, and compare on-air results rather than changing several variables at once.
CHA LEFS 4010 User Guide 250609. The current guide for the exact LEFS 4010 End Assembly, dipole kit, band, and completed geometry controls. Similar connectors or wire lengths do not prove compatibility.