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This variable frequency oscillator was found in an old American documentation. Transistors allow more modern equivalents and coil data are found next to the diagram for several frequency bands.
This circuit was found in an English publication from 1967. The circuit is for listening on a...
November 2016 - TBC8x7 Series Bipolar Transistors with 60 V Vcbo and 150 mA Collector Currents can now...
This circuit was obtained from an English magazine from 1979, but can be easily assembled today...