SSB (single sideband) is a mode where the carrier and one sideband of the AM mode has been suppressed. Whether using USB (upper sideband) or LSB (lower sideband) more of the transmitter's signal is focused in the sideband used as compared to AM.
According to About.com, denier is not a type of nylon but a measure of the fineness of the fiber. One denier is equal to 1 gram per 9,000 meters of yarn. Manufacturers use the term denier with both natural and man-made fibers. Continue Reading.
The only catch that s holding back a full scale use of Kevlar is its price; 1,500 denier is commonly used for tire cord, hoses and belts costs $12.00 per pound, while the other common grades of Kevlar range in the $13.00 to $15.00 range. Outside of the U.S., the same 1,500 denier fiber costs $23.00-27.00 per pound.