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Chameleon Knowledge Base · The Complete Online HF Antenna Handbook

CHA LINK-D Engineering Guide: Operating the Link System

LINK-D band links change the electrical length of both dipole legs so the same wire set can operate on 40, 30, or 20 meters. The useful habit is simple: choose the band on the ground, make both sides match, then raise the antenna.

Product Installation Guides CHA LINK-D Reviewed 2026-07-14
Start with the operating choice: LINK-D band links change the electrical length of both dipole legs so the same wire set can operate on 40, 30, or 20 meters. The useful habit is simple: choose the band on the ground, make both sides match, then raise the antenna.

How the documented system works

A closed or open link is part of the radiator, not a cosmetic connector. Both legs must use the same band state, and unused wire must remain arranged as the guide-built linked dipole rather than being improvised into a second radiator.

The boundary that prevents mistakes

The current LEFS 4010 guide identifies the three supported bands but does not publish permission to hot-switch links, mix states, or operate multiple bands simultaneously. Lower the antenna and remove RF before changing links.

Use this field sequence

Power down, disconnect the radio, lower the center or ends, set and inspect both matching link positions, restore the intended geometry, then sweep the selected band before transmitting.

Source boundary

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.

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