Discussion
Which component corrects tracking error at the low-frequency end of the band?
Answer: B
The padder, a capacitor in series with the oscillator coil, has most effect where the tuning capacitance is large, which is the low-frequency end. The trimmer, in parallel, dominates at the high-frequency end where the tuning capacitance is small. The antenna coil affects coupling and sensitivity. And the intermediate frequency transformer is aligned separately at a fixed frequency. Knowing which adjustment bites at which end of the band is what makes an alignment procedure follow a sensible order rather than a random one.
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