ERICSSON
TELEPHONE No. N1831
 

This instrument is specially designed for telephone linesmen's use, or may be used as a temporary station which can readily be moved from one place to another.

For automatic exchange use it is fitted with a standard dial, but so that it may also be useful on magneto and central battery manual systems, it is equipped with a 3-magnet generator, 500 ohm ringer, induction coil, condenser and small battery.

The apparatus is contained in a polished hardwood case having a compartment to take the telescopic micro-telephone and waterproof cord. The dial and line terminals are mounted on the top and the whole is protected by the leather carrying case which is provided with a shoulder strap.

Micro-telephone - N5806T
Cord - N4004T
Earpiece - N4444A
Mouthpiece - N8626A
Dry Battery - N3757 standard and N3759 tropical.

NOTE - A similar instrument without dial for magneto or central battery manual systems is available - N1830.

Could be supplied with a Dial No. 8FA or a Dial No. 10FA.

Overall dimensions 9 x 8.75 x 4.3 inches
Weight 9lb 14oz

N1831 was supplied to the GPO as their Telephone No. 44B and was fitted with a dial.

Circuit diagram N13886 is dated 1940.

Schematic No. 25919.

Taken from the Ericsson catalogue

Last revised: November 22, 2022