What do the letters in a satellite’s mode designator specify? [E2A05] A. Power limits for uplink and downlink transmissions B. The location of the ground control station C. The polarization…
How should the winding axes of two solenoid inductors be oriented to minimize their mutual inductance? [G6A19] A. In line B. Parallel to each other C. At right angles to…
What are the two components of a radio wave? [T3B03] A. AC and DC B. Voltage and current C. Electric and magnetic fields D. Ionizing and non-ionizing radiation This is…
Digital modes are the topic of this week’s Amateur Extra exam question…. [E8C13] What is one advantage of using JT-65 coding? A. Uses only a 65 Hz bandwidth B. The…
What does it mean when a CW operator sends “KN” at the end of a transmission? A. Listening for novice stations B. Operating full break-in C. Listening only for a…
What is the correct way to connect a voltmeter to a circuit? A. In series with the circuit B. In parallel with the circuit C. In quadrature with the circuit…
Ew, this sounds kind of gross, but this aspect of sideband modulation is on the test! [E2B06] What is vestigial sideband modulation? A. Amplitude modulation in which one complete sideband…
What part of a data packet contains the routing and handling information? A. Directory B. Preamble C. Header D. Footer The answer is C. Header. When dealing with data “packets”,…
What is the maximum power level that an amateur radio station may use at VHF frequencies before an RF exposure evaluation is required? A. 1500 watts PEP transmitter output B….
Ah, another fine math problem from the Amateur Extra exam (don’t you just love these?) [E5D16] What is the power factor of an RL circuit having a 30 degree phase…