GEC GECOPHONECIRCUIT DIAGRAM
GEC GECOPHONEHere are three diagrams - you have to make up your mind which is the correct one for your telephone. Under each diagram are instructions on how to wire the telephone up for Plug and Socket. The top diagram has two capacitors whilst the lower one only has one.
Using a standard BT line cord connect:
White of line cord to terminal 4.
3.3k resistor fitted between 4 & 5.
Red of line cord to terminal 6.
Green of line cord - spare - insulate.
Disconnect green wire on 2uf capacitor and connect this to the Blue wire of the line cord (insulate with tape).
Check transmission and replace transmitter if bad and always fit a Rectifier element across the receiver on terminals 1 & 2. Click here for more information.
Using a standard BT line cord connect:
Remove and discard the old line cord.
White of line cord to L1.
3.3k resistor fitted between L1 and E.
Red of line cord to L2.
Blue of line cord to C.
Green of line cord - spare - insulate.
Disconnect one of the wires on the 2uf capacitor.
Check transmission and replace transmitter if bad and always fit a Rectifier element across the receiver on terminals 6 & 5. Click here for more information.
Using a standard BT line cord connect:
Remove and discard the old line cord.
Remove wire strap between Bellset terminals 5 and 6
White of line cord to Bellset terminal 6.
3.3k resistor fitted between Bellset terminals 5 and 6.
Red of line cord to terminal Bellset 4.
Blue of line cord to terminal Bellset 3.
Green of line cord - spare - insulate.
Disconnect one of the wires on the 2uf capacitor - the green wire and insulate.
Check transmission and replace transmitter if bad and always fit a Rectifier element across the receiver on terminals 1 & 2. Click here for more information.
This is a 1936 Gecophone made for Telephone Rentals
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Last revised: 30 November, 2007