Comtelco Yagi antennas are used by customers all over the world. They are used in the oil industry for off shore drilling rigs and in locations where resistance to severe environments are a great cause of concern. They are used by telecom carriers that demand total reliability. Since 1978 we have shipped over 100,000 Yagis worldwide. By using a construction technique called cold weld, we can produce antennas that are every bit as rugged as a standard welded Yagi, but at a significant cost advantage. Using specially designed hydraulic machinery; we are able to press in tight tolerance solid elements into precision-machined booms. These elements are pressed in with over 1,000 lbs of hydraulic pressure insuring a permanent bond. After assembly, an epoxy powder coat is applied. This seals the antenna, providing environmental protection. Our basic Yagi design is common to both our standard duty and heavy-duty versions. The standard duty “22 series” Yagis are built using 1/2” U channel booms with 1/4” solid elements. the heavy-duty “33 series” Yagis use 1” U channel booms with 3/8” solid elements. Both series have a no-tune assembly and epoxy powder coated finish.