Extra Class
The highest level of amateur radio license with full operating privileges on all amateur bands. Most technical exam. 50 questions, 37 needed to pass.
What is meant by the blocking dynamic range of a receiver?
Which of the following describes problems caused by poor dynamic range in a receiver?
What creates intermodulation interference between two repeaters in close proximity?
Which of the following is used to reduce or eliminate intermodulation interference in a repeater caused by a nearby transmitter?
What transmitter frequencies would create an intermodulation-product signal in a receiver tuned to 146.70 MHz when a nearby station transmits on 146.52 MHz?
What is the term for the reduction in receiver sensitivity caused by a strong signal near the received frequency?
Which of the following reduces the likelihood of receiver desensitization?
What causes intermodulation in an electronic circuit?
What is the purpose of the preselector in a communications receiver?
What does a third-order intercept level of 40 dBm mean with respect to receiver performance?
What is the link margin in a system with a transmit power level of 10 W (+40 dBm), a system antenna gain of 10 dBi, a cable loss of 3 dB, a path loss of 136 dB, a receiver minimum discernable signal of -103 dBm, and a required signal-to-noise ratio of 6 dB?
What is the received signal level with a transmit power of 10 W (+40 dBm), a transmit antenna gain of 6 dBi, a receive antenna gain of 3 dBi, and a path loss of 100 dB?
What power level does a receiver minimum discernible signal of -100 dBm represent?
What problem can occur when using an automatic notch filter (ANF) to remove interfering carriers while receiving CW signals?
Which of the following types of noise can often be reduced by a digital noise reduction?
Which of the following types of noise are removed by a noise blanker?
How can conducted noise from an automobile battery charging system be suppressed?
What is used to suppress radio frequency interference from a line-driven AC motor?
What type of electrical interference can be caused by computer network equipment?
Which of the following can cause shielded cables to radiate or receive interference?
HAM Test Bank Editorial Team
Licensed Amateur Radio Operators & Volunteer Examiners
Content for Extra Class exam questions is based on official FCC Part 97 regulations and the NCVEC question pool.