was developed in FREMO to split the LocoNet-cabling

Original files can be found her:

• https://pischky.rose-intech.de/dcc/lnbox1/
• https://pischky.rose-intech.de/dcc/lnbox2/

and was published in

• Hp1 Modellbahn – 3. Quartal 1998 Seite 24: "Digital - selbstgemacht: LN-Boxen"
  

A similar kit is available here:

• https://www.h0fine.de
  

Similar hardware (PCB) are available here (exemplary listing):

• https://www.floodland.nl/aim/info_locohub_1.htm
• http://simandit.de/simwiki/doku.php?id=modellbahn:digital#rj12-verteiler
• http://www.mollehem.se/index.php/en/module-accessories/uttagsram-318-detail
• https://locohdl.synology.me/pageDE3.html
• https://locohdl.synology.me/pageDE21.html