Types M.B. 200, 210 & 220Portable Telephone Instruments
Types M.B. 200, 210 & 220
Portable Telephone Instruments
This instrument consists of:-
A polished Oak Case, with carrying handle, containing Generator, magneto bell of 300
ohms 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, and a screw driver.
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 |
MB 200 was previously the No. 391
Taken from the Ericsson Telephone Catalogue 1911
| Home page | BT/GPO Telephones | Ericsson Telephones | Ericsson Home Page | Ericsson PABX | All Telephone Systems |