Monthly Archives: March 2011

1 Dave Johnson – “Time of Day” and electrical interference

FTP Head Engineer Dave Johnson

*Posted with permission of Metal Detector Engineer Dave Johnson*

First Texas Head Engineer Dave Johnson has always done an awesome job “educating” the metal detecting masses.  Thanks again for sharing your knowledge Mr. J.!

Time of day influences the amount and type of electrical interference, not just local sources but also longwave radio communications (mostly military) from thousands of miles away.

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