Label No. 78
Aluminium instruction label used on the front of Transmitter No. 2.  Included a paper dummy disc that fitted underneath the label.  The number is stamped or written on this paper disc.

No. 78 - Used in LB (C.B.S.) areas.
No. 78C - Used in Magneto exchange areas and extension lines.
No. 78D - Used on Private wires.
No. 78E - Used in Automatic exchange areas.
No. 78F - Used in Magneto exchange areas.


 

Label No. 78C Label No. 78D
   
Label No. 78E Label No. 78F

 

 
 
BACK Home page BT/GPO Telephones Search the Site Glossary of Telecom Terminology Quick Find All Telephone Systems

Last revised: July 23, 2025

FM