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Re: HyperboLine ™ new Player in the Old Game



2.75" center to center was as close as they would go, a dozen barely fit in 32".


The Hyperspike HS 40 spec sheet shows the frequency ranges the low and high alert tones fall in.


The  HS 60 used a tone around 1600 Hz setting the Guinness World Record of 140.2 decibels at 128 meters.