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If I grasp your question right, dogs might hear your detectors headphones or speaker, but they don't hear the electromagnetic radiation that is output by the coil.
Acoustic radiation and electromagnetic radiation can fall into the hearing range of dogs, but they are two completely different animals.
I have noticed that dogs started barking as soon as the detector is powered on and detecting started. They can here the detector half a mile away easily under the right conditions.I was reminded that electronic components as well as the coil windings do oscillate (vibrate) when in operation. That in turn could produce a low-level whine that a dog can hear but humans can't.
A good example of that is the old CRT TV's that often made an audible whine when in operation.
Heaven,..............I'm in Heaven...........I have no doubts they can hear the detectors just fine... But the sounds are not anything worthy of attention... Getting free patts... or a chance at your snacks... are a better pursuit for a puppy on the go... View attachment 42089
A dog can hear frequency's up to about 45 Khz. Most humans can't hear above 16 Khz some one with superb ears 20Khz would be the upper limit. A dogs hearing is extremely sensitive.Wonder if the coils are buzzing way above our hearing range ?
that would be the 'killer b's' knees would it not?!I just want to know what freq I can run to keep the mosquito's away .sube