TELEPHONE No. 3
CBS No. 1
telephone with no magneto generator.
Wooden Local Battery telephone with sloping writing shelf.
The set shown to the right was made by Ericsson.
A later version was made, the Mark 238, which was oblong in shape (see pictures below).
This telephone was in the 1928 Rate book but not available in the 1946 Rate Book.
Fitted with a Transmitter No. 2 although earlier types had a Transmitter No. 6.
If a Transmitter No. 2 was fitted then a Label No. 78 was fitted between the speaking tube and the transmitter body. This label advised of the Exchange name and number.
This telephone could also work on CBS No. 2 & 3 exchanges by the addition of a capacitor.
Mark 238 Telephone includes (1928):-
Frames, Notice No. 2, and Labels No. 53B, was not maintained in the old type of these instruments.
Circuit diagram - N103.
Drawing No's 8830, 8831 & 8832.
Supplied by Ericsson, their Model N20141
GPO instructions state that this telephone should be fixed to
the wall with it's lower edge 36 inches from the floor.
Last revised: June 28, 2021