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=== Technician Class ===Q: What does the abbreviation FET stand for?:A: Field Effect TransistorQ: What electrical component stores energy in an electric field?:A: CapacitorQ: What is meant by the term 'check' in reference to a formal traffic message?:A: The check is a count of the number of words or word equivalents in the text portion of the message.Q: What is meant by the term 'knife edge' propagation?:A: Signals are partially refracted around solid objects exhibiting sharp edges.Q: What is the characteristic appearance of a cold solder joint?:A: A grainy or dull surface.Q: What causes 'spin fading' when referring to satellite signals?:A: Rotation of the satellite and its antennas.Q: What is the term used to describe the use of a aub-audible tone transmitted with normal voice audio to open the squelch of a receiver?:A: CTCSSQ: Why is coaxial cable used more often than any other feedline for amateur radio antenna systems?:A: It is easy to use and requires few special installation considerations.