I am specifically looking to purchase a "Vintage" Electrosonics International (Riverside New Jersey) Instalert Model ET-10, Ten Position Tone Encoder. The model is grey or wood grain in color and was used by many fire departments in the Northeast US for encoding their fire department and ambulance tones.
I am also looking for other vintage tone encoders of other manufacturers.
Also, I am looking for someone with a great deal of expertise in this area to assist with a few questions about tone formats and encoders, i.e. Bramco, GE, Ledex, Plectron, Reach, Zetron.
I can be reached at firstname.lastname@example.org
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