Fire Calls Amplified
Amplifiers are being placed on the watch desk of all Baltimore, Md., fire stations. All types of department messages will be sent over the speakers and the telephone will not be much used hereafter, except for confidential messages.
The speakers are six inches in diameter and are mounted in a small box, separate from the controls. A two-way switch on the box allows the man at the speaker to either listen to the order or give a reply. The volune is high enough to permit the orders to be heard over most of the station.