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 (minimum age 18): A Class B license is issued to those persons 18 years of age or older who have demonstrated their qualifications to operate any single vehicle with a gross vehicle weight rating of 26,001 pounds or more or any such vehicle towing a vehicle having a gross vehicle weight rating of not more than 10,000 pounds.