1 The inductor consists of 2 turns of no. 26 copper wire with an inside diameter of 0.125 inch and spread to 0.250 inch.
The 20-pF capacitor is placed physically adjacent to the cold end of the tank circuit with the single turn output link placed between that capacitor and the tank.
The capacitor represented by the dotted line is used only when a particular crystal exhibits high activity with attendant instability. This capacitor acts as part of an RF voltage divider and reduces the feedback drive to the MRF901. Values of 40 pF, preferably less, are appropriate.
*Spraque-Goodman, GKU series.
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