The term balun (pronounced bal-un) is derived from the function of the passive device that converts between a BAL anced and UNbalanced electrical signal. Common types of baluns convert 100 Ohm twisted pair (balanced) to 75 Ohm coaxial (unbalanced).
Commercial Driver License (Class A, B or C) A commercial driver license (CDL) is required for drivers of heavyweight vehicles, 26,001 lbs. or more gross vehicle weight rating (GVWR), vehicles hauling a trailer that is 10,001 lbs.
Class B Commercial Driverâs License (CDL) is required to drive a straight dump truck. Class B CDL allows you to drive heavy and tractor trailer trucks and buses. With a Class B license, youâre able to tow trailers less than 10,000 pounds of Gross Vehicle Weight Rating (GVWR).