Skip to content

Chameleon Knowledge Base · The Complete Online HF Antenna Handbook

CHA V-DIPOLE Tuning and Optimization Guide

On 40 and 30 meters install both M-COILs and the hairpin; on 20–6 meters remove the coils or use the documented jumper and omit the hairpin. Start from the guide table, sweep broadly, and shorten or lengthen both SS17s equally until resonance is in the required band segment.

Product Installation Guides CHA V-DIPOLE Reviewed 2026-07-14
Start with the operating decision: On 40 and 30 meters install both M-COILs and the hairpin; on 20–6 meters remove the coils or use the documented jumper and omit the hairpin. Start from the guide table, sweep broadly, and shorten or lengthen both SS17s equally until resonance is in the required band segment.

How the system behaves

The Add-On Kit supplies two M-COILs, CHA SS INSULATOR, hairpin match, CHA BLANK, RF adapters, and SINGLE EXT. It does not include the two SS17 whips, HUB, or coax normally supplied by CHA TDL. Those exact parts complete the antenna.

The boundary that prevents mistakes

The V-DIPOLE is compact, balanced, resonant, and needs no tuner, but it requires physical whip changes for band changes, exact symmetry, safe support, and more assembly than a broadband vertical. Its low-mounted V raises the ends compared with a horizontal dipole at the same feed height.

Use this field sequence

Use the documented Spike Mount, UCM, or heavy surveyor-tripod/SURVEYOR-A path. Preserve the hub’s V geometry, install SS INSULATOR above a conductive support extension, hand-tighten the complete feed assembly, extend both SS17s equally, and keep the public clear.

Source boundary

CHA V-DIPOLE User Guide Rev. 4/30/2026. Use the exact current configuration, components, feed, support, geometry, power, and safety limits; mechanical fit does not establish compatibility.

Continue learning

Back to the Knowledge Base