A 30 and 40 Meter KX2 Adapter for the Grabil CF-2200 Carbon Fiber (or any other cheap) Whip
Executive Summary (don't ya feel important now?) I've been very pleased with the Grabil CF2200 carbon fiber whip for handheld use on the KX2. The whip is lighter and stiffer than the metal whips I'd been using, and the KX2 readily tuned the CF2200 alone from 10 through 20 meters. But that left me without 30 and 40 meters. As good as the KX2 tuner is, it refused to match the Grabil on either band. This post describes how I made a prototype 30 and 40 meter adapter that can be left on the CF2200 so that all bands 10 - 40 meters can be tuned by the KX2 tuner. No reason you can't use this with any cheap extendable whip to build a poor boy's AX-4, but I find that the CF2200 provides field advantages, so I focused on that. The Background I've operated /PM with simple 7 to 8 foot whips on the KX2 for several years now. Other blog posts here describe how I've built a simple bracket to mount most any kind of a whip on the KX2 without stressing its BNC, and I w...