Home:  Relays: POST OFFICE RELAY TYPE G, 1920's

POST OFFICE RELAY TYPE G, 1920's

View all Relays

POST OFFICE RELAY TYPE G, 1920's

Used in telegraphy systems to amplify power and and enable equipment to be powered locally. Post Office Relay “G” on a pluggable base.

The “G” Relay is a later model of the Gulstad Relay see item A0238. It works best in Duplex Systems. “Duplex working consists in the simultaneous transmission of two messages in opposite directions over a single wire connecting two stations “(sic) P249 Telegraphy T.E. Herbert 1906 see item A0252 for types of telegraphy relays.
Suitable for use on a single needle telegraph or double plate sounder.It has double throw contacts and is polarised, (has a magnet).

Add a memory or information about this object

A0253



©2007 The Museum of Technology, The Great War and WWII
Company registered in England No. 7452160, Registered Charity No. 1140352, Accredited Museum No. 2221