| PORTABLE - TELEPHONES MB 200, 210
and 220
 This instrument consists of:-
A polished Oak Case, with carrying handle, containing Generator, magneto bell of 300ohms resistance.
Buzzer.
Press Button for short circuiting the receiver.
Press Button for the Buzzer Signal.
Micro-telephone RE. 3062 with waterproof cord R.S. 8010 (Old Catalogue No. 2322),
India-rubber mouthpiece with metal mountings (can he supplied with a celluloid mouthpiece if desired).
2 dry cells R.K. 190 (Old Catalogue No. 600)
Lighting arresters.
Terminals for line and earth.
Screwdriver.
If specially ordered, this instrument can be supplied with a canvas cover.
| Type |
Type of Generator |
No. of gen Magnets |
Dimensions
in inches. |
Weight
in lbs. |
| MB 200 |
RH 3120 |
3 |
12 x 6.7 x 8.25 |
17.6 |
| MB 210 |
RH 4100 |
4 |
12 x 6.7 x 8.25 |
18.3 |
| MB 220 |
RH 5100 |
5 |
12.5 x 8.25 x 9.45 |
24.25 |
The MB 200 was previously the No. 391.
Taken from the Ericsson Telephone Catalogue 1911
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