CHA LEFS 4010 Sloper Installation and Operating Guide

The wire shape is an electrical decision as well as a mechanical one. Changing one endpoint can change both the match and where the signal goes.

The CHA LEFS 4010 puts a full 65 ft HF radiator into a compact 1.1 lb package for operators who would rather carry antenna wire than a heavy support system. Its integrated end assembly combines the suspension point, line winder, 49:1 matching network, and both EFHW and dipole feed connections.

What matters for this decision

• Use the documented single-support sloper and keep the wire under light mechanical tension with deliberate sag.
• Record the feed-point height, far-end height, wire bearing, coax route, and nearby conductors.
• Orienting the wire and raising the feed point can change pattern shape; they are not cosmetic details.

Why operators choose this system

For POTA, SOTA, hiking, biking, and temporary HOA operation, its strongest advantage is a complete resonant field workflow: raise the feed assembly, pull out the wire, connect the supplied choked RG-316 when that variant is selected, and operate four popular bands without stopping to adjust the antenna.

Published operating reference

• Published bands without a tuner: 40, 20, 15, and 10 meters.
• Published tuner-assisted bands: 30, 17, and 12 meters.
• Published power: 100 W SSB, 50 W CW, and 25 W digital or other modes.
• Published size: 65 ft wire, approximately 1.1 lb, one-operator setup around 10 minutes.

Make the next deployment repeatable

Record product revision, configuration, wire dimensions and bearings, endpoint heights, support hardware, return path, coax and choke condition, tuner state, analyzer reference plane, weather, and on-air reports.