Monday, May 11, 2026

Building the Ultimate Multiband OCF Dipole for 40m-6m

Finding a single antenna that handles multiple HF bands without a mountain of complicated traps is a challenge. While many hams reach for a standard dipole, the Off-Center Fed (OCF) design offers a much smarter way to stay active on several bands. This specific design Multiband OCF Dipole,  originally developed and tested by Rick Littlefield (W1BQT), serves as a reliable workhorse for the 40, 20, 10, and 6-meter bands.

By shifting the feed point, we tap into a “magic spot” where the antenna’s impedance stays relatively consistent across harmonically related frequencies. This makes it a perfect match for the standard 50-ohm coax found in most shacks today.

Multiband OCF Dipole Antenna 40-6M

Building the Ultimate Multiband OCF Dipole for 40m-6m

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