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Build a Vintage Radio Sweep Alignment Instrument

Build a Vintage Radio Sweep Alignment Instrument

By Dick Whipple    View In Digital Edition  

The popularity of repairing and restoring tube radios has highlighted the need for a variety of test instruments. After repair or restoration of a radio, the final step is often alignment. For an AM radio, a signal generator and voltmeter will do a good job. But with an FM radio, using a signal generator and voltmeter does not always produce the best results. So, I came up with my own design using a digital signal generator module, Arduino processor, and digital display.


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