Simplest Telephone Landline Tap – Listening Device

If you are looking for a VERY simple, yet very effective telephone listening device, then look no further. When properly made, you will not hear any clicks w…

2 thoughts on “Simplest Telephone Landline Tap – Listening Device

  1. Very nice! The Soviets had something similar but much bigger.  One small correction, sometimes there’s another line on the yellow and black wires. The standard is first line on red and green as stated in the video.

  2. Yes, I know about the Y/BK pair. To make the video simple, I only showed what the great majority of people use(1 line) on R/G.


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