Crystaloi Detector Type BB with Buzzer built in

The Type BB Crystaloi Detector with Buzzer is mounted in a highly finished mahogany case in which are mounted the Crystaloi Cylinder, a Cohering Inductance, a Fixed Condenser adjusted to the correct capacity for the Detector, a Specially Wound Buzzer, the High-Grade Batteries to operate the buzzer control button. The case is provided with four binding posts for tuner and telephone leads.

Together with a tuner it forms a complete Crystal receiver.

This Type BB was also sold- but not manufactured - by Clapp-Eastham.

In questo link sono elencati 18 modelli, di cui 18 con immagini e 0 con schemi.
Elenco delle radio e altri apparecchi della Turney, Eugene T., Co. Inc. New York City