STC TELEPHONE No. 4101AJ & AK

MAGNETO WALL MOUNTING

4101-AJ WALL TYPE
Local Battery Wall Set constructed of polished oak and designed for maximum efficiency and accessibility.

An anti-side tone circuit is used so that extraneous noises in the vicinity of the listener cause minimum interference with the reception of speech.

The set includes the 4016-A Microtelephone with the high quality receiver giving a gain of intelligibility equivalent to about 5db.

Two dry cells are needed and, if required, should be ordered separately.

The following components are fitted:-
Microtelephone 4016-A
Generator 4012-A
Induction Coil 4023-B
Ringer 4013-A

Dimensions - l7in x 10.25in x 7.25in (43.18 x 26.04 x 18.46cm)
Weight - 141b (6.4kg)

4101-AK WALL SET
This set is similar in appearance to the 4101-AJ Telephone Set, but is wired and fitted with components for a way station set (4308-C) with the addition of a magneto generator (for calling the controller).

It is used in conjunction with the 4001-A Selector Set.

Dimensions - 17in x 10.25in x 7.25in (43.18 x 26.04 x 18.46cm)
Weight - 131b 8oz (6.1 kg)

Taken from:-
STC Apparatus Catalogue for Telephone, Remote Control and Railway Signalling Catalogue, Edition 5 (1952)

Last revised: September 28, 2022