Circuit Diagram
Description
Source:http://www.spyreview.co.uk/2006/10/08/parallel-phone-tap-circuit-diagram/
Description
In a recent article, I discussed the difference between parallel and
series telephone taps. In this article, I present a very simple and
reliable parallel phone tap circuit useful for recording telephone
conversations onto a tape recorder.
When installing a telephone tap, its advisable not to cut the
telephone line in anyway. Cutting the telephone line for any time is
detectable, and therefore series devices can be detected in this way.
Parallel devices can be installed without cutting any telephone wires,
and is thus harder to detect.
The diagram shows a simple circuit using just 6 very cheap and common
components. To build the circuit, you will need some Veroboard or
prototype board (whatever you favourite is), some wire, and a 3.5mm plug
that will connect to your tape recorder’s microphone input socket. I
have left it to the reader to work this bit out, as its very simple to
do but quite awkward to explain!Source:http://www.spyreview.co.uk/2006/10/08/parallel-phone-tap-circuit-diagram/
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