SWEDISH ERICSSON |
TELEPHONE No. DAT 1001
TELEPHONE - WALL
Watertight wall instrument for LB Systems
This instrument is of watertight construction and enclosed in a black enamelled cast-iron box with door, opened by a handle. It is further provided with generator, but has no bell. The different parts of the instrument are mounted on a removable inset.
The transformer has a closed iron core of sheet alloy and is anti-sidetone connected, which in combination with the good properties of the handset ensures considerably better transmission qualities than those of earlier instruments of similar kind.
The generator is of a new type having small dimensions but giving great output. It is mounted on the middle panel of the inset and may be taken out for inspection.
The batteries are located in a compartment at the left-hand side of the instrument, covered by a cast-iron panel with ventilation holes.
Taken from the L. M. Ericsson Telephones and Signalling Material Catalogue No. 188 Supplement 5 (1938)
Last revised: October 12, 2019