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* [[Media:1311-A Audio Oscillator Manual.pdf|General Radio 1311-A Audio Oscillator Manual 1311-0100-C 1965]] | * [[Media:1311-A Audio Oscillator Manual.pdf|General Radio 1311-A Audio Oscillator Manual 1311-0100-C 1965]] | ||
{{Catalog History}} | |||
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The '''General Radio 1311-A Audio Oscillator''' was introduced in {{Catalog | The '''General Radio 1311-A Audio Oscillator''' was introduced in {{Catalog R}} and remained available through {{Catalog 1978}}. | ||
The General Radio 1311-A Audio Oscillator is a transistorized Wien-bridge audio oscillator with transformer output. The switched output frequencies correspond to commonly used bridge generator frequencies. A delta frequency control is available on the front panel to fine-tune the frequency. Although designed as a bridge oscillator, the 1311-A is also well suited for audio testing, given its low hum and distortion levels. As a bridge oscillator, it is part of the [[1660-A]] Inductance and [[1620-A]] Capacitance Measurement Systems. | The General Radio 1311-A Audio Oscillator is a transistorized Wien-bridge audio oscillator with transformer output. The switched output frequencies correspond to commonly used bridge generator frequencies. A delta frequency control is available on the front panel to fine-tune the frequency. Although designed as a bridge oscillator, the 1311-A is also well suited for audio testing, given its low hum and distortion levels. As a bridge oscillator, it is part of the [[1660-A]] Inductance and [[1620-A]] Capacitance Measurement Systems. |