
Connect the volume potentiometer instead of the previously used voltage divider made of two resistors. Also integrate the
switch of the potentiometer with the negative battery connection, where previously a resistor or a wire had been attached. The
second potentiometer will be used for scanning the frequencies.
When the potentiometers are attached, you can close the housing and control the radio from the outside. Compared to the
two-button tuning method, the rotary knobs provide the additional advantage that you can search for another station in both
directions. Furthermore, when you turn on the radio, the previously chosen station will reappear.
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Summary of Contents for RETRO RADIO
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Page 15: ...Step 2 Sound Generator Required components 10 k resistor brown black orange 15...
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Page 24: ...Step 5 Tuning Required components Hook up wire 24...
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Page 35: ...Measured voltages 35...