9
1-73. A cathode modulator is used in which of
the following situations?
1. When rf power is unlimited and
distortion can be tolerated
2. When rf power is limited and
distortion cannot be tolerated
3. When af power is unlimited and
distortion can be tolerated
4. When af power is limited and
distortion cannot be tolerated
1-74. In a cathode modulator, the modulating
voltage is in series with which of the
following voltages?
1. The grid voltage only
2. The plate voltage only
3. Both the grid and plate voltages
4. The cathode voltage only
Figure 1B.—Emitter-injection modulator.
IN ANSWERING QUESTION 1-75, REFER
TO FIGURE 1B.
1-75. In the circuit, what components develop
the modulation envelope?
1.
Q1
2. C2 and R1
3. C3 and R3
4. C4 and L1
