"3 chime Kockum Sonics MKT-75 series air horns mounted on a Goninan DMU "Sprinter" diesel passenger train in Victoria, Australia.
The sound these produce somewhat possesses similarities to the tone produced by a "healthy" Australian RVB 3 chime, but with a more pleasant, sharper, and less screechy tone.
I believe these horns have a thermoplastic bell construction."
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