Intercom System

Electronics Infoline Web

A Camp Intercom

Did you ever try to make a telephone call on a campsite by using the tent pegs of your tent? Well, here's how you can do it.

http://www.radio-scouting.org.uk/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=33

http://www.epanorama.net/documents/telecom/telephone_intercom.html

using electronics from an old audio cassette player

http://www.hanssummers.com/electronics/equipment/intercom/

http://www.electronic-circuits-diagrams.com/telephonesimages/telephonesckt2.shtml

http://www.opamplabs.com/intercom.htm

http://www.opamplabs.com/hdsetint.htm

http://www.web-ee.com/Electronic-Projects/projects/intercom/index.shtml

with 3 wires connection

http://jap.hu/electronic/doorphone.html