Description : What are some disadvantages of operating a transmitter at or near the muf?
Last Answer : Frequent signal fading and dropouts.
Description : What do the letters muf, luf, and fot stand for?
Last Answer : Muf is maximum usable frequency. Luf is lowest usable frequency. Fot is commonly known as optimum working frequency.
Description : What is the highest frequency that can be sent straight upward and be returned to earth? A. MUF B. Gyro frequency C. Skip frequency D. Critical frequency
Last Answer : D. Critical frequency
Description : To obtain the most reliable sky wave propagation the ____ should be used. A. Lowest useable frequency (LUF). B. Maximum useable frequency (MUF). C. Optimum useable frequency (OUF). D. Critical frequency
Last Answer : C. Optimum useable frequency (OUF).
Description : At a certain time, the MUF for transmission at an angle of incidence of 75° is 17 MHz. What is the critical frequency? A. 4.4 MHz B. 3.5 MHz C. 6.5 MHz D. 1.5 MHz
Last Answer : A. 4.4 MHz
Description : Which transistor configuration has the highest input resistance?
Last Answer : Common collector.
Description : While measuring frequency response, as the signal generator approaches the lowest and highest frequency the recorder can effectively record, the VTVM reading drops to less than - 3 dB. What does this indicate?
Last Answer : The upper and lower limits of the frequency response specification for that tape recorder.
Description : Why should you always use the highest range when connecting a voltmeter to a circuit?
Last Answer : To prevent excess current through the meter movement.
Description : Why should you use the highest range of an ammeter for the initial measurement?
Last Answer : To prevent damage to the meter movement from excessive current.
Description : What class of operation has the highest fidelity?
Last Answer : Class A operation.