TELEPHONE No. 39
Originally called the "Telephone, House, Wall, Intercommunication, Secret, 5 way" it was later renamed as the Telephone No. 39.

Up to five telephones can be connected together.

Each telephone on the system required a Battery, Leclanche No. 1 CZ, 3 cell.

Could be used in conjunction with the single way Telephone No. 37.

Telephone includes (1928):-
1 x Hook for Micro telephone.
1 x Switch Selector.
1 x Bell, Trembler.
1 x Press button.
1 x Vibrator.
1 x Coil induction.
1 x Relay, Cut-in.
1 x Telephone No. 32.

Handset is a Telephone No. 32.

Circuit Diagrams - TL232 and N139.

Made obsolete in 1947.

Information on all House telephone systems


  
 
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Last revised: October 07, 2025

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