So, it isn't really silent? I can hear it whether it is long or short. Am I missing something? I always thought people weren't supposed to be able to hear a dog whistle.
Many thanks; I hadn't thought to pull the shroud off. I was interested what the frequency might be, as advertised 'ultrasonic'. Max frequency I measured was about 8KHz. That's not ultrasonic. Anyhow, the whistle works well with the dog.
You should try using the whistle after the short vocal command , *blow*sit down, *toot-toot" retreat , etc. A different tone produced for each separate command. Do one at a time until your dog begins to react to the command without your voice, only the whistle.
