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FOR USE ON MAGNETO CALL AND CLEAR SYSTEMS
GIVING THE HIGHEST GRADE
SERVICE UP TO THE MOST EXTREME CONDITIONS
AB 535 (See also Telephone 345)
CASE WORK
Polished walnut, constructed to hold the speaking battery of 2 cells, either
Leclanche or
dry cells.
MICRO-TELEPHONE
L.B. hand-set, with suspension loop for hanging on hook switch. Fitted with with 3ft. 4
way cord.
GENERATOR
4-magnet or 5-magnet type. These generators will operate the ringer satisfactorily through
a line resistance of 30,000ohms.
RINGER
For resistance see table below.
DIMENSIONS
Height 28.5 inches, Width 13.4 inches, depth 9.75 inches.
BATTERY COMPARTMENT
To take two cells up to maximum dimensions of 3.75 inches x 3.75 x 8 inches in height, for
each cell.
| Type |
No. of magnets |
Ringer Resistance |
Circuit Type |
Weight |
| AB 530 |
4 |
300 |
Series |
19.2 |
| AB 535 |
4 |
1000 |
Bridging |
19.2 |
| AB 535G |
4 |
1000 |
Bridging |
19.2 |
| AB 590 |
5 |
2000 |
Bridging |
20.25 |
| AB 590G |
5 |
2000 |
Bridging |
20.25 |
Telephones AB 590 and AB 590G are for use on very heavy bridging circuits.
Telephones AB 530, AB 535 and AB 590 are supplied with push button to cut out the
ringer coils and short circuit the induction coil, so as to cut out the home bell when
ringing out, and also to give increased reception efficiency during conversation.
This was the Telephone 345 except it is fitted with a 1000ohm ringer.
Click here for ATCS Article on the Commonwealth Ericsson
Known as the APO Telephone No. 1.
In both the 1905 and 1912 Ericsson Telephone Catalogue
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