Hacker's Field Telephone

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A Hacker's Field Telephone Release status: experimental [box doku]
Description	A DIY field telephone kit
Author(s)	Paul, Phil, Severin

The Chaosvermittlung is a group of people that builds up a field telephone network at hacker conferences and camps. One idea that came up during the GRODEN'18 was to build our own field telephone. Let's do it!

Ideas

• Use an old regular telephone as a base, build a PCB that replaces the old internals
• Build a telephone from scratch, laser cut case, etc.

Open Questions

• Do we need a transformer? Or can that be replaced?
  • If not, what kind? How to get it easily and cheaply?
• Do we need the ringing voltage generator? Or can we replace that?

Resources

• http://mysite.du.edu/~jcalvert/tech/phones.htm#Tele
• https://www.nonstopsystems.com/radio/pdf-hell/article-Feldfernsprecher33.pdf
• https://danmorgan76.wordpress.com/2013/11/09/the-humble-field-phone/
• http://tp6n.blogspot.com/
• https://www.klaus-paffenholz.de/bos-funk/index.html?https://www.klaus-paffenholz.de/bos-funk/feldtelefonie.html
• https://www.klaus-paffenholz.de/bos-funk/feldtelefonie/Feldfernsprecher-OB-ZB.pdf
• https://www.klaus-paffenholz.de/bos-funk/ddr/ddr-bilder/ff63.pdf
• https://do5fox.darc.de/download/Feldfernsprecher%20%20FF54%20OBZB,%2010er%20FSPV,%20Amtszusatz.pdf
• https://de.wikipedia.org/wiki/Feldtelefon
• https://de.wikipedia.org/wiki/EE-8
• https://olive-drab.com/od_electronics_ee8.php
• http://members.aon.at/pritemus/feldtelefone.htm