General Class
Intermediate license providing expanded HF privileges. Covers more advanced operating procedures, radio wave propagation, and circuit theory. 35 questions, 26 needed to pass.
What is meant by the term “critical frequency” at a given incidence angle?
Why is skip propagation via the F2 region longer than that via the other ionospheric regions?
What does the term “critical angle” mean, as applied to radio wave propagation?
Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?
What is a characteristic of HF scatter?
What makes HF scatter signals often sound distorted?
Why are HF scatter signals in the skip zone usually weak?
What type of propagation allows signals to be heard in the transmitting station’s skip zone?
What is near vertical incidence skywave (NVIS) propagation?
Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?
What is the purpose of the notch filter found on many HF transceivers?
What is the benefit of using the opposite or “reverse” sideband when receiving CW?
How does a noise blanker work?
What is the effect on plate current of the correct setting of a vacuum-tube RF power amplifier’s TUNE control?
Why is automatic level control (ALC) used with an RF power amplifier?
What is the purpose of an antenna tuner?
What happens as a receiver’s noise reduction control level is increased?
What is the correct adjustment for the LOAD or COUPLING control of a vacuum tube RF power amplifier?
What is the purpose of delaying RF output after activating a transmitter’s keying line to an external amplifier?
What is the function of an electronic keyer?
HAM Test Bank Editorial Team
Licensed Amateur Radio Operators & Volunteer Examiners
Content for General Class exam questions is based on official FCC Part 97 regulations and the NCVEC question pool.