E4D - Amateur Practices

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 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?

Why are odd-order intermodulation products, created within a receiver, of particular interest compared to other products?

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?