The "Shortphone," by which name this type of instrument is commonly known, is designed primarily to meet the demand for an inexpensive magneto wall telephone for use where the local battery may conveniently be installed as a separate unit. The solid-back transmitter, " Bell " receiver, ringer and other component parts are all of the highest quality and the instrument is suitable in particular for service under conditions demanding the use of robust equipment.
A comprehensive range of " Shortphones," offering the usual choice of generator, is listed in the table below. All instruments are of the bridging type with the exception of No. 331 which is wired for use on series circuits. The 5-magnet set, with its powerful generator and sensitive 1600 ohm ringer, is designed chiefly for use on long or heavily loaded party lines.
If in some instances telephones are required with battery accommodation, uniformity of equipment throughout a magneto system can be preserved by employing "Shortphones" for all subscribers and providing, where necessary, a backboard with writing slope and battery compartment. This accessory, which is made of polished walnut to match the woodwork of the telephone, is supplied only when specially ordered and is available in two sizes with capacity for two dry cells and two Leclanche cells respectively.
Taken from the GEC Telephones and Switchboards (Manual and Automatic) Catalogue No. 11 (Circa 1936)
Last revised: January 30, 2021