| |||||||
|
Presented here are numerous wiring diagrams and pictures of GEC Gecophones. As many of these GEC telephones have no part number on the base and no diagram pasted inside, you have to make up your mind which one relates to your telephone. Under each diagram are instructions on how to wire the telephone up for the UK Plug and Socket system. Click here for other companies that produced phones similar to the Gecophone and a description of the variants. The phones can sometimes be dated by reference to the information stamped on the capacitor - which is the oblong component on the base plate. The capacitors found on many Gecophones will most probably be marked similarly to some of the pictures below. Most of these telephones come in standard, but there are also tropicalised models. The main difference being the mesh over the ringer holes in the base plate and the chunky hook switch neck on the tropicalised models. The wiring diagram would the same for both types.
A capacitor stamped, for example, with 102 C38/1 2uf will equate as the following:- GEC Gecophone models K8167 (CB) or K8387 (Automatic)
This telephone has a single capacitor, a bell and a 4 way terminal block mounted sideways on the base plate. The body of the phone has a 7 way terminal block and induction coil. The terminals are labelled with letters and numbers. The CB variant was supplied without a dial and terminals T and 1 would be linked. To convert to UK plug and socket use a BT line cord and wire as follows:-
Single opening on rear for cord entry
Probably an early Gecophone as it has an aluminium alloy terminal strip.
This model was one of the original Gecophones
On the base there are only two opening to let out the sound of the ringer
A view of the end of the capacitor GEC Gecophone models K8389 (DC Ringer)
Similar in construction to the K8387, but this telephone has a DC bell. It also has an electromagnetic-receiver. This telephone has no induction coil or capacitor. The handset cord has two wires only. This telephone cannot be converted and was probably used on internal intercom systems. The same diagram is probably used with the Telephone No. 90.
The telephone has a DC bell and was used on the PX1110 or PX1210 PAX system. It also has an electromagnetic-receiver. This telephone has no induction coil or capacitor. The handset cord has two wires only. This telephone cannot be converted.
GEC Gecophone model 75 (Automatic) and 175 (CB)
This telephone has a single capacitor, a bell and a 4 way terminal block mounted on the base plate. The body of the phone has a 8 way terminal block and a 6 tag induction coil. Note there are now two cord entry points: the entry hole in the case is for the handset cord and line cord enters via the ferrule that is fixed to the base plate. This construction probably ran until 1955, with just the model number changing as GEC renumbered the ranges at certain points. The CB telephone, Model No. 175,would have the dial missing and terminals 3 and 4 linked together. To convert to UK plug and socket use a BT line cord and wire as follows:-
Made in 1939 the telephone in the following pictures is
a model 175 (CB)
Rear of phone showing the two entry points
Internal view showing the newly designed 7 terminal
Induction Coil.
Base plate changes from the original design include the
terminal block placed above the bell, a ringer
Capacitor showing the telephone was produced in 1938 by GEC
Base plate with cord ferrule and four ringer sound exit
holes in place of the original single sound exit holes.
This is a model 175 and was supplied to the Gleneagles Hotel in Scotland. The telephones were originally installed in 1933/1934 and dumped during a 1974 refurbishment.
The picture below is the model 75
This telephone has a single capacitor, a bell or buzzer and a 4 way terminal block mounted above the bell ringer. The body of the phone has a 6 way terminal block and 6 tag induction coil (DRG 52381). It could be supplied with a bell ringer or buzzer. To convert to UK plug and socket use a BT line cord and wire as follows:-
GEC Gecophone model ST1301 and ST1401 & ST1406 (sound holes
covered with mesh)
Rear view showing two entry points
Telephone model ST1301 (base plate holes have no mesh) and ST1401
(base plate holes covered with mesh)
Internal view of the body exposing the angled contact
switch set fitted to Tropicalised variants.
Internal view of the base plate showing the AC buzzer.
Capacitor is dated 1948 and made by GEC A CB variant is pictured above which always comes without a dial and therefore terminals 3 and 4 will be linked together. The pictures show that it was supplied with an AC buzzer, but a bell could also be specified. This telephone would have been supplied for hotel or ships cabin use. The is fitted with a 6 way terminal block and a 7 tag Induction Coil.
Diagram KS8548 To convert to UK plug and socket use a BT line cord and wire as follows:-
GEC Gecophone model ST1503, ST1510, ST1603 and ST1610
Telephone model ST1503 & ST1510 (open base plate holes) and
Internal picture showing the angled contact set fitted to Tropicalised variants
The pictures show a telephone made in 1951, but the
base plate is like most models made from 1934 to 1955.
Base plate showing mesh covered sound holes, which are only on Tropicalised models
This telephone has a single capacitor, a bell or buzzer and a 4 way terminal block mounted on the base plate. The body of the phone has a 8 way terminal block and induction coil with seven tags. The Tropicalised models have an contact set which is mounted at an angle to the terminals and mesh covers on the sound exit holes (in the base plate). To convert to UK plug and socket use a BT line cord and wire as follows:-
GEC Gecophone model TEL/32G/ATT
Major changes to this Gecophone were the handset, a 4 way handset cord,
One capacitor is on the base plate whilst the other is
squeezed into the body
Diagram KS10915 To convert to UK plug and socket use a BT line cord and wire as follows:-
|
|||||||
Last revised: April 02, 2022FM2 |
GEC GECOPHONE
