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Classic Rotary Phones Forum

Telephone Identification, Repair & Restoration => Telephone Wiring Diagrams => Non North American Wiring Diagrams => Topic started by: dsk on April 30, 2016, 02:44:17 PM

Title: German WWii trunk for fieldechange
Post by: dsk on April 30, 2016, 02:44:17 PM
I have been looking for this for a while, and now I got it.   ;D

dsk
Title: Re: German WWii trunk for fieldechange
Post by: dsk on April 30, 2016, 02:49:12 PM
I have tried to translate the description of the unit.
dsk
Title: Re: German WWii trunk for fieldechange
Post by: dsk on April 30, 2016, 03:01:43 PM
The unit has so extremely high REN load, so I added a 1 uF capacitor and dropped the REN load from something over 3 to something close to 1.

dsk

PS ads pictures of the complete setup.

Impedance measured at 25Hz 2600 ohms before mod, and 6650 ohms after. 

DS

Title: Re: German WWii trunk for fieldechange
Post by: RB on October 16, 2017, 01:26:36 PM
Sweet find!
That whole setup is just cool
Title: Re: German WWii trunk for fieldechange
Post by: HarrySmith on October 16, 2017, 02:31:06 PM
Very cool!
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