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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 American 1980s documentation. The transistors admit equivalents and the...
We find this circuit in a 1980s documentation. The circuit can be applied to modern operators with...
This circuit is from Mullard documentation from 1969. Transistors support current equivalents. Output...