The computer optimized 332-7HD features nearly flat gain and VSWR across the bandwidth. The 5/16" rod parasitic elements are welded to the 0.125 wall boom for mechanical strength and lightning protection. The Driven Element Module has superior weather resistance and power handling abilities: all connectors are O-ring sealed to the CNC machined block and internal connections are sealed in a silicone gel with excellent dielectric characteristics. The Balun connectors are triple sealed and other key mechanical and electrical parts are CNC machined from 6061-T6 aluminum. All hardware is stainless steel. A rear-mounted version is also available. Anodized finish or other coatings are optional.