RF isolators are simple devices that isolate the RF signal found on capacitor and roller inductor central shafts from the knobs on the front of your device. Believe it or not, some older manufactures didn't bother to place isolators between their devices and the knobs on the front panel, opting instead to use the plastic knobs on their tuners as the isolators. Our isolators are guaranteed to block RF from getting onto the knobs of your device..

Air Variable Capacitors can be found here: Air Variable Capacitors 

These new feed through insulators are made from Delrin for guaranteed complete isolation between the conductor and the chassis. We got pretty tired of spending big bucks for old, chipped, cracked, used ceramic feed through insulators, so we made our own.