GERMAN TELEPHONE Model »SA28« / »PROTOS« SIEMENS & HALSKE (1928) ********************************************************************** Blind Print in Back Plate: V.Sa.tist.66cM 29199 This »SA28« is the "Office Version" of the "Standard Telephone" »W28«. It consist of three parts: The TOP with dialer, the BASE with all the electric elements & the BACK PLATE. All hold together with two screws. The HANDSET is made of Bakelite; the microphone has a special cap. WIRE DIAGRAM: << "Thanks!" to Jens Lange, www.altetelefone.de >> Like the W28, the dial is blocked when the handset is in place. This is a necessity, because pulses would go over the line when the dial would be activated. THE (West-)GERMAN "STANDARD TELEPHONES" OF THE » DEUTSCHE POST « ... ==================================================================== 1928 »W28« Metal 1948 »W48« Bakelite 1961 »W611« Thermoplast (ABS) R E M A R K : ==================================================================== These vintage ROTARY TELEPHONES use "PULSE-DIALING". To make it work in your application, YOU MAY NEED A "PULSE-TO-TONE-CONVERTER"... Have a look at the NEWER W48, W611 w. Wire Diagrams ... Historical Remarks ... impressum: ********************************************************************** © C.HAMANN http://public.BHT-Berlin.de/hamann 09/12/15 |