Our air variable capacitors have a range of 1.7pf to 300pf. Each cap is constructed using precision CNC plasma cut vanes for both the stator and the rotor. Each cap includes our own contactor wheel and arm design. Our contactor arm tension is completely adjustable and does not rely on assembly pressure to hold contact pressure between the RF connector and the rotor. 

In this example, the capacitors have been installed on the bottom side of the mid-plate in our symmetric antenna tuner. Each cap has a shaft RF isolator and a 4.5:1 vernier reduction drive installed. Note the solid construction of these caps. No flimsy material being used here. Additionally, each cap is completely serviceable. These caps can be disassembled all the way down to the individual plates.