c. has a tunable input and output.
20. The two stages of RF amplification shown
a. common-base configurations.
b. coupling circuits to suppress the undesired feedback.
c. thermistors in the base circuits to compensate for the feedback.
d. step-down transformers to prevent the transfer of unwanted frequencies.
CHECK YOUR ANSWERS WITH LESSON 1 SOLUTION SHEET PAGES 55 AND 56.