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• 310 projects!

Telephone - all subcategories

Cellular Phone calling Detector

author: RED Free Circuit Designs
visits: 17586

The Link Telephone Intercom – Every Home Should Have One!

author: Austin Hellier, Wollongong City, Australia © 1997-2003
visits: 16013

FM Telephone Bug

Small telephone bug. Listen telephone line on your FM receiver. It is self powered. Small part count.

author:
visits: 7334

8 Line Intercommunication using 89c51

author: Ashad mustufa
visits: 5378

Telephone amplifier

author:
visits: 4282

The Link 4+0 – Internal Intercom

author: Austin Hellier, Wollongong City, Australia © 1997-2003 (26 Nov 2003)
visits: 4207

The Link "P" - Privacy Link! (Telephone Intercom)

author: Austin Hellier - Wollongong City, Australia © 1997 - 2004
visits: 4064

Telephone line monitor

author:
visits: 4060

Soft Musical Telephone Ringer

author:
visits: 4051

Intercommunication (Intercom)

author:
visits: 4050