The Resonance-11: Portable Field Vertical for HF-VHF
Adjustable to Resonate Your Signal.
The Resonance-11 isn't just a whip—it’s a precision-engineered 11.5' vertical tuning system. Built from premium 6061-T6 Aircraft-Grade Aluminum, it brings Greyline Performance’s legendary efficiency to the POTA trailhead, the SOTA summit, to tower mounting, portable operation, and the mobile DX station - from the higher HF bands to VHF!
Start radiating with 100% efficiency by physically resonating your antenna to the exact frequency you need.
Why the Resonance-11 Dominates the Field:
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The Aluminum Advantage: While other portable whips use thin, high-resistance stainless steel, we use 6061-T6 Aluminum. It is more conductive than steel, ensuring your QRP or high-power signal efficiently propagates to the ionosphere.
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True 1/4 Wave Performance: Reach full 1/4 wave resonance on the 10M, 12M, and 15M bands with a simple slide. Need the 20M band? Simply add a short wire extension to the tip or use your rig's internal tuner with the whip at full 11.5' extension.
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High-Gain VHF Mode: Retract the whip to 48" for a 5/8 Wave 2-Meter powerhouse, or extend to 135" (11.25') for a massive 5/8 Wave 6-Meter gain vertical.
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Rugged Portability: Collapses to just 3 feet for easy backpack transport, but stands a towering 11.5 feet when deployed.