ATM TELEPHONE T.1122 & T.1123

T.1122
Polished wood case with hinged front, making for maximum accessibility.  Front secured by two captive screws.  High resistance; screened ringer with special gong adjustment; detachable switch-hook.  Hand micro-telephone with convenient curved grip, supporting capsule-type microphone and hygienic mouthpiece.  Two-pole receiver, 65 ohms resistance.

The generator has a double cut-out, and is wound to 500ohms.  An induction coil and internal terminals for connecting the lines and battery complete the equipment.

Height, 9.5ins. width, 6.75ins. depth, 5.75ins.
Weight, 11lbs.

This telephone can also be found in the ATEA catalogue (1925) as their model LD 220.  The handset shown in the picture to the right was also an ATEA model.

MAGNETO TELEPHONE

T.1123
Similar specification to T.1122 above, but fitted with capsule microphone, mounted on front of case, and separate two-pole receiver of 65ohms resistance.

Dimensions and weight as T.1122.

This telephone can also be found in the ATEA catalogue (1925) as their model LD 210.

Taken from the ATM Mine Telephones and Signalling Apparatus Catalogue 1928

Last revised: January 25, 2026