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ERICSSON
SWITCHBOARD No. OA 850
 
Type OA 850
Cordless Switchboards
Floor Pattern
Metallic Circuit
Local Battery System

768.jpg (11731 bytes)THE CONNECTIONS ARE MADE BY MEANS OF KEYS.

FRAMEWORK
Woodwork polished walnut and the legs enamelled cast iron.
The key and indicator field is covered with fibre.

EQUIPMENT
The CONNECTING KEYS are arranged in vertical or horizontal rows (see note),
with as many keys in each row as the number of lines for which the board is built.

The number of connections which can be made at the same time is equal to the number of rows of connecting keys.
1 x CALLING KEY for each line.
1 x OPERATOR's KEY for each row of connecting keys.
1 x CALLING INDICATOR for each line.
1 x CLEARING INDICATOR for each row of connecting keys.
NIGHT BELL.
NIGHT BELL SWITCH.
GENERATOR. RH 5000, 5 magnet.
MICROTELEPHONE. RH 5052, with cord RS 7021.
TESTING KEY.

In types OA 850/10, OA 850/16, the keys are arranged in vertical rows in all the other types they are arranged horizontally.

This type of board is not usually kept in stock.
TYPE No. of Metallic ccts No. of Connecting rows Height ins Width ins Depth ins Weight in lbs.
OA 850/10 10 4 52.65 23.81 21.25 121.27
OA 850/16 16 5 58.65 25.75 21.25 141.12
OA 850/20 20 6 54.12 27.75 22.04 154.35
OA 850/25 25 6 54.12 31.69 22.04 167.58
OA 850/30 30 6 54.12 35.62 22.04 174.19
OA 850/35 35 6 54.12 39.56 22.04 176.40
OA 850/40 40 7 57.87 43.70 22.04 180.81


Taken from the Ericsson Telephone Catalogue 1914

 
 
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Last revised: October 08, 2019

FM2