GEC K8070 & K8075

K8070 & K8075

MAGNETO CALL TELEPHONES
STANDARD MAGNETO CALL WALL TELEPHONE
FOR 'BRIDGING' AND LONG DISTANCE LINE WORKING
G.P.O. PATTERN
Arranged for either Magneto or Central Battery Signalling

K8070
For Magneto Signalling
Fitted with Four-magnet Generator, Armature wound to a resistance of 500ohms, Automatic Cut-out for Short-circuiting the Armature when in normal position. Polarized Bell wound to a resistance of 1,000ohms, with 3 inch Gongs, and adjusted to ring through a resistance of 25,000ohms. Induction Coil - primary 1ohm, secondary 25ohms.

Long Automatic Switch Hook with Gold-Silver Alloy Contacts, 'Deckert' Granular Carbon Transmitter mounted on Adjustable Arm. P.O. Pattern, Double-pole Bell Receiver and Cord, Line Terminals enclosed at top with Enamelled Metal Cover and Spring Catch, extra Receiver Terminals and Hook, and Battery Box to hold two No. 2 Leclanche Cells.

Woodwork of thoroughly-seasoned American Walnut, well finished and French Polished, with Enamelled Metal Cover to Battery Box. All exterior metal parts Nickel plated.

Overall dimensions, 29.5 ion. x 15 in. x l0.5 in.

Weight, 22 lbs.

Price in 1908 was £8.10.0

K8075
For Central Battery Signalling.
As supplied to the G.P.O.

Same as above, but without Magneto Generator. The action of lifting the Receiver from the Hook operates the Calling Signal, and replacing it gives the Clearing Signal.

Weight, 17 lbs.

Price in 1908 was £5.10.0


Taken from the GEC Telephone Catalogue, K Section, 10th Edition, 1908

Last revised: July 31, 2025