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Chameleon Knowledge Base · The Complete Online HF Antenna Handbook

CHA OCF40 Product DNA: Complete System Overview

CHA OCF40 is a portable off-center-fed dipole for operators who want 40, 20, 10, and 6 meters without a tuner and additional documented bands when a tuner is available.

Product Installation Guides CHA OCF40 Reviewed 2026-07-14
Read the complete product technical record
Start with the operator’s decision: CHA OCF40 is a portable off-center-fed dipole for operators who want 40, 20, 10, and 6 meters without a tuner and additional documented bands when a tuner is available.

How this exact system works

Its 44-foot and 22-foot legs, matching/feed assembly, 25-foot RG-316 with choke, suspension, and complete geometry form the antenna. It is not a random unequal wire pair. Treat the product as a complete documented system: feed point, radiator, return or balanced second leg, feed line, support, geometry, power, and environment all matter.

The boundary that prevents mistakes

The guide lists 60, 30, 17, 15, and 12 meters with a tuner. Published power is 50 W SSB and 25 W CW or other modes. Do not add radial systems to this balanced dipole.

Use this field sequence

Install horizontally with three supports or as the guide-defined inverted-V, keep the feed point and ends clear, strain-relieve the feed system, and measure after the final geometry is established.

Source boundary

CHA OCF40 User Guide 250513. The exact current product, components, band, feed, support, geometry, and operating limits control; physical fit does not establish compatibility.

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