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 UKW 65287
Page 1: ...FM Radio Construction Set UKW Radio Bausatz...
Page 15: ...15...
Page 16: ...Step 2 Sound Generator Required components 10 k resistor brown black orange 16...
Page 18: ...18...
Page 21: ...21...
Page 25: ...Step 5 Tuning Required components Hook up wire 25...
Page 30: ...30...
Page 36: ...Measured voltages 36...