Rupp Four-Way Oval Antenna Base Assembly

This Rupp Four-Way Oval Antenna Base Assembly is the foundation piece of Rupp's antenna mounting system, the component that everything else in the line bolts onto. It ships complete with a black anodized clevis, part number 09-1088-23, along with the forged aluminum fittings needed to connect an upper support. Starting with a matched base like this one is the surest way to end up with hardware that actually fits together correctly.

The oval shape of the base spreads mounting stress across a wider footprint than a round base of similar size, which matters on a fiberglass cabin side or tower panel that flexes more than solid metal. Forged aluminum construction gives the base the strength to handle the constant vibration and load an antenna mount sees underway, year after year. The black anodized clevis adds corrosion resistance at the pivot point, a spot that sees repeated movement every time the antenna gets raised or lowered.

As a base-only assembly, it's meant to pair with one of Rupp's upper antenna supports rather than serve as a complete mount on its own. Ordering this base alongside a compatible support gives a full mounting system built from matched Rupp hardware throughout. That consistency matters more than it might seem, since mixing brands on a single mount can introduce fitment issues that a matched set avoids entirely. Shop more marine antennas.

• Foundation piece of Rupp's mounting system
• Includes black anodized clevis and forged fittings
• Oval shape spreads stress across a wider footprint
• Base only, pairs with a Rupp upper support