TELEPHONE No. 250


The Telephone No. 250 is a portable linesman's telephone of the local battery variety.  It has an integral battery, ringing generator and a dial.  The telephone can be used on automatic lines.

The Telephone No. 250A has a socket that accepts a headset using a Plug No. 420.  This socket is located on the back corner.

The generator handle is stowed by means of the brass clip inside the lid.  The mouthpiece has a flattened spittoon.

The case was made of soft plastic, normally found in a red/brown colour, but some telephones were of a harder plastic and were a mottled brown colour.

Introduced in the late 1930's.

Telephone includes (1946 and 1956):-
1 x Buzzer No. 26A.
1 x Coil, Induction No. 21.
1 x Condenser, M.C. No. 97.
1 x Cord, Instrument No. 5/09E, 3".
1 x Dial, Automatic, S.S., No. 10LA (1946) or No 12LA (1956).
1 x Generator No. 26A.
1 x Handle, Generator No. 21.
1 x Telephone No. 184B, Black, with Cord 3/63KB, 33".

To be requisitioned separately:-
1 x Battery, Dry, No. 11.

Supersedes Telephone, Nos. 44 and 44B

Circuit diagram - N350.

Drawings - 63567 (250) and 92182/92163 (250A).

The battery used in the phone is the Battery Dry No. 11, which is 3 volt battery consisting of 2 cells.  Click here for more information

 

 


 
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Last revised: September 27, 2021

FM