The Acme Silent Whistle 535 was pioneered by the Acme Whistle Company of Birmingham, England in 1935, where it is still manufactured to this day. This whistle has an adjustable pitch that is loud to dogs but is barely audible to humans. Effective up to 2 miles with ultrasonic frequencies...
The Acme Silent Whistle 535 was pioneered by the Acme Whistle Company of Birmingham, England in 1935, where it is still manufactured to this day. This whistle has an adjustable pitch that is loud to dogs but is barely audible to humans. Effective up to 2 miles with ultrasonic frequencies ranging from 5400-12800 Hertz. Constructed of stainless steel, it has a 4 in. chain with a cover at the end to protect the mouthpiece. Perfect for wild bird hunting in big countries or to have a distinctive whistle at a field trial or hunt test.
We’re excited to introduce a new way to shop smarter at Lion Country Supply, our Build Your Own Bundle feature is now live on select products, with more on the way!
Garmin has just released Software Version v7.21 for the Alpha 300, delivering a mix of new features, performance enhancements, and important system safeguards for hunters and dog handlers who depend on precision and reliability.