Radio Amateur Quiz Canadian License

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Question A-003-003-001

What is a dip meter?

Correct Answer

A variable frequency oscillator with metered feedback current

Explanation

A dip meter (or grid dip oscillator, GDO) is a calibrated tunable oscillator. When its coil is coupled to a resonant circuit, energy is absorbed by that circuit at its resonant frequency, causing a 'dip' in the meter reading (often oscillator grid current or a similar feedback indicator).

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