Hustler Base Spirit Series Extreme Vertical Antennas are designed to withstand the most severe environments. With a maximum wind speed rating of 150 mph, these antennas are able to take a punishment. They feature direct ground lightning protection, a bandwidth of 10 MHz, vertical aperature (3 dB from max) of 36 degrees, wind load (lateral thrust at 100 mph) of 41 lbs., and galvanized steel mounting clamps for permit mounting the antenna to a support pipe up to 3 1/4 in. (O.D.). Available in three different frequency ranges, Hustler Antenna base spirit series extreme vertical antennas are ready to face any severe weather conditions they come in contact with.