Radio Amateur Quiz Canadian License

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Question A-006-001-009

A single conversion receiver with a 9 MHz IF has a local oscillator operating at 16 MHz. The frequency it is tuned to is:

Correct Answer

7 MHz

Explanation

In a superheterodyne receiver, IF = |LO - RF|. If LO > RF, then RF = LO - IF = 16 MHz - 9 MHz = 7 MHz. (If RF > LO, RF = LO + IF = 16 + 9 = 25 MHz, usually LO is chosen above RF for tracking reasons in HF).

Warning: Generated by AI