The antenna has an integrated amplifier, RF and DC are both diode-protected. The high quality makes this antenna perfect for both leisure and commercial vessels. The antenna is manufactured in premium quality materials in order to prevent galvanic corrosion. Radiating elements are made of copper. The antenna is manufactured using crimping technology giving the antenna a 4-5 times stronger build-up. Fits both 1" 14TPI and ISO 228/1-G1 threads. It has the same rugged design as all other AC Antennas products thus it withstands harsh environmental conditions, both on sea and land.