Скачать или смотреть E32 - German WWII Amtsanschliesser 33, 1933

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The Amtsanschliesser 33 ("telephone office connector") is a very compact and sturdy telephone for military use. Assumed to have been introduced together with the FF33 and as replacement to the dial unit which was available for the FF33 predecessor FF26 (which contrary to the FF33 supported direct connection to CB networks). It seems to have been in use still in the Bundesgrenzschutz and/or early Bundeswehr in the 50ies.

The case is made of bakelite but with more wall thickness than civil instrument casings. The general shape is very similar to a normal desk telephone but more compact. It is in fact the smallest dial telephone of it's era. A leather sleeve was used for transport (see links under sources for pictures, I do not own one). As dial a standard german type N30 dial was used. As handset any FF33 handset can be connected using the standard FF33 handset plug. The internals and the electrical setup are basically identical to any dial telephone: capacitor and ringer, coil, hookswitch. To separate the CB DC current when connecting to a LB field telephone two additional capacitors are built in. The ringer has no bells, it is only a buzzer (for space saving reasons).

From "Der Amtsanschliesser 33. GDV 833, PDV 833, 1954":

"The Amtsanschliesser 33, together with the field handset 33, enables connection to postal telephone exchanges. In CB central offices (central battery operation) and dial central offices, the Amtsanschliesser equipped with the field handset is an independent telephone set. In the case of SB central offices (local battery operation with end of call supervision), a field telephone 33 is also required. The Amtsanschliesser 33 also has a switching jack which enables the switching of postal connections to the field network."

Use case:
Standalone telephone
"SB Zusatz" (for operating a field telephone on a LB network with end of call DC supervision)
Dial unit extension for a field telephone (e.g. the FF33) or a field switchboard (e.g. "Kleiner Klappenschrank zu 10 Leitungen")

Datasheet
Size: 185x110x90 mm (without handset)
Weight: 1.5kg (without handset)
Material: Bakelite body, Metal bottom lid
Type N30 rotary dial
Buzzer type ringer
Standard FF33 handset

Visit http://fieldphones.org/episode32/ for additional information.