DER 3001 (replaces DB 30)
This device can only be connected to the telephone system OL 12.

The device has a has a cover made of black lacquered sheet metal.

Parts:
Microphone RLF 1014 made of black Bakelite with microphone capsule RLA 1004, 40ohms, and cord TRS 1302, 1250mm.
Dial RCA 1002.
Transformer RCL 10301.
Direct current ringer KLD 1051, 100ohms.
Line cord TRS 1302, 1250mm.

Dimensions:
Height 166mm, width 115mm for the bottom of the device plate.

Weight 1.9 kg.

Taken from the L. M. Ericsson Catalogue No. 610 (1939) - Swedish Translation
 

Last revised: March 25, 2024