Sunday 13 February 2011

simple solid-state low-power HF crystal controlled oscillator-transmitter

 

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A simple solid-state low-power HF crystal controlled oscillator-transmitter. The unspecified tuned circuit values are resonant at the crystal frequency.

A simple low power HF CW oscillator transmitter is shown schematically in Fig . By using a crystal-controlled oscillator, we gain frequency accuracy and stability, but lose frequency agility.

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