TELEPHONE No. 741 & 8741
|General Information on 700 Type Telephones.
700 Type telephone circuit description.
700 Regulator operation.
How to wire your Telephone No. 741 to make it work on Plug and Socket.
Dismantling a Handset No. 3.
Restoring the plastic cover and handset.
Switches for the Telephone No. 741.
Click here for Additional Buttons - N849.
Click here for the Auxiliary Switches - N848.
Circuit diagram - N841.
Drawings - 93013/1, 93013/2, 93013/0/1, 93013/0/2 and 93013/1/1.
Specifications - S1009 and S1489.
Telephone No. 8741
Telephone No. 8741 was introduced in 1981 and fitted with high impedance bell coils and a new style Plug and Socket cord.
These phones can be found in D, F and G variants.
The F variant had a 1000 ohm bell ringer.
Both the F and G variants were made obsolescent in 1983.
The correct line cord is the Cord Connecting No. 4/502 250mm (This is an oval light grey cord with Plug 431 on one end a spade tags the other)
TELEPHONE No. 741
Many parts of the Telephone No. 741 are identical to those of the Telephones No. 711 and No. 746 which are described in B1004 and B1020 respectively. This Instruction describes only those parts which are particular to the Telephone No. 741. The Telephone No. 741 is for use in automatic areas only and is suitable for use on lines of up to 10 dB at 1600 Hz with a signalling limit of 1000 ohms loop resistance. It cannot be used on local battery circuits. The telephone can be modified for a variety of uses by the fitting of add-on units, adapters, etc. Early supplies were of the Mark 1 version, which had a metal base, but new supplies will be of the Mark 2 version which has a plastic base. This has been designed to provide an improved fit to the wall bracket (to stop rattling).
Plan views showing positions of auxiliary switches and buzzer
USE WITH PLAN SET N625 (WALL)
PRESS-BUTTONS, HANDSETS, ADDITIONAL WATCH RECEIVER, INSTALLATION
Part - Rate Book description
(Formerly EI Telephones, Stations, A1074)
The Telephone No. 741 case was the almost the same as the No. 711, except that the No. 741 version had a rebate about 1.5mm deep and the same wide on the inside edge. This was all round the face of the body that contacted the chassis. It allowed for the up-turned edge of the metal chassis (originally designed for the Telephone No. 746) to be snugly accommodated.
A No. 741 case will fit a Telephone No. 711. The other way round it depends on which variant of the base is being used. The metal base became rare as it rattled on the Bracket, Telephone, No. 16. The plastic bases were proprietary and different moulders had subtly different designs.
Last revised: February 18, 2023