TELEPHONE No. 251


Wooden wall telephone used in Automatic, Magneto and CBS No's 1, 2 & 3 areas on long lines.  It was supplied as a Local Battery telephone and modified as required.  It has a Telephone No. 164 as a handset.

Generally a BPO factory refurbished Telephone No. 151 with the fixed transmitter removed.  

Introduced in 1944 this set was specifically for long lines and it is thought that it was for use in areas that had sustained war damage to the local exchange.

Telephone includes (1946 and 1956):-
1 x Bell No. 1A, Unmounted.
1 x Dial, Automatic, Dummy No. 4.
1 x Bell-gong No.2, Oxidized.
1 x Bell-gong No.2A, Oxidized.
1 x Hook, Receiver, AB.
1 x Mounting, Dial, Auto., No. 7.
1 x Capacitor, M.C., No. 97.
1 x Switch, Receiver, No. 4.
1 x Coil, Induction, No. 21.
1 x Telephone, No. 164, Black.

To be requisitioned separately as required:
1 x Cord, Inst., No. 5/28E, 5" (Auto systems).
1 x Dial, Automatic, S.S. No. 10 (Auto systems).
1 x Generator, No. 26AN (Magneto systems).
1 x Label No. 160 ...

Circuit Diagram - N351.

Drawing No. 63038.

Adjustment of Magneto bells

Collectors Information - what to look for


 
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Last revised: February 05, 2020

FM