Improve your CB radio's performance without breaking the bank. The high performance oil coil cooled CB antenna from TruckSpec provides excellent performance and longevity without the price. The oil coil cooled load coil ensures you don't lose any performance due to heat loss. Any power converted to heat is just lost power. By using an oil cooled coil, your performance is improved because the antenna will remain cool and your power will radiate out from the antenna in RF rather than heat, thus increasing your transmit distance.