TELEPHONES - SUB STATION
for automatic telephone systems
for use with an intermediate telephone station
Micro telephone, Insulated capsule transmitter, high resistance, waterproof.
Condenser, 2 microfarads capacity.
Generator RH 2455, 2-magnet.
Ringer, 1000 ohms resistance.
The frame work of the telephone is of black enamelled steel.
The terminals are enclosed.
If the sub-station is speaking with the intermediate station or with the Exchange, their conversation cannot be overheard.
Weight: 5,42 kg.
Taken from the L. M. Ericsson Telephone Catalogue No. 1921
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