It's well known that many animals are particularly sensitive to high-frequency sounds that humans can't hear. Many commercial pest repellers based on this principle are .

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Greetings: I am interested in building an ultrasonic dog whistle that is . and Projects Forum; Electronic Projects ultrasonic dog whistle schematic Design/Ideas/Reviews; ULTRASONIC DOG WHISTLE SCHEMATIC

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www.diy-electronic-projects.com Updated: 2012-01-27 Ultrasonic Dog Whistle - circuit diagrams, schematics, electronic . .. to design a slightly different and .

Greetings: I am interested in building an ultrasonic dog whistle that is powerful enough to reach about 200 feet. I have a neighbor dog that will not

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