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.
The Garmin Upland Beeper has been discontinued, but there are still plenty of high-quality alternatives available. Explore standalone beepers, integrated e-collar options, and learn about Lion Country Supply’s trade-in program to upgrade to newer systems.
Garmin has released software update V6.94 for the Alpha 300 and Alpha 300i handhelds, bringing key improvements and fixes. Enhancements include updates to Outdoor Maps+, inReach Weather, and scrolling in message threads. The update also resolves issues with vertical speed data, LTE connections, device crashes, and more, continuing Garmin’s commitment to enhancing user experience and device reliability.