The Cellar - View Single Post

Diaphone Jim · 10-30-2007, 11:39 AM

It comes from an interest in Diaphone Air Horns, big ones (Types F and G) for fog signals and smaller ones (Types B and C) for fire department and emergency alerting systems.

10-30-2007, 11:39 AM	#11
Diaphone Jim Junior Master Dwellar Join Date: Sep 2007 Location: Northern California Posts: 2,122	It comes from an interest in Diaphone Air Horns, big ones (Types F and G) for fog signals and smaller ones (Types B and C) for fire department and emergency alerting systems.