BELL No. 41A

Used on London F.B. systems - fire station house bell (indoor).

Two coils of 50 ohms each and a 3 inch gong (Bell-gong No. 5).

GPO Engineering Instructions on Fire Systems


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

Last revised: January 26, 2016