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How to Wiretap Phone Line with DIY Circuit



Had to reupload! see comments. I like to record my phone calls directly on camera… for research purposes… so I designed some circuit to wiretap the land line directly to my camera audio input.

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By: Mehdi Sadaghdar

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  1. I drew the winner of the Keysight Scope! The lucky guy is:
    – Luis Enrique G. S.
    Thanks everyone to enter the draw. FBI pays good money for your emails, HAHAHA! Just kidding, they already have all our emails…

  2. In this circuit / this country R1 will appear as a loop fault condition if tested from the exchange. The normal conditions looking to line in the UK are: Phone unplugged – 1.8uF in series with 470k, phone plugged in and old-style dial phones 1.8uF in series with the ringer/bell circuit (about 1000 Ohms). Don’t leave it permanently connected.

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