>         I've got a line-powered RF telephone bug which splices into a
 > telephone cable anywhere along the line you wish to monitor. This bug
[..]
 >         To complement this, I've got a converted radio/cassette recorder
 > which switches recording on and off automatically dependant on the presence
 > of a carrier signal from the above bug.
[..]
 >         (Please note: usage of the transmitter on public PSTN telephone
 > lines contravenes Austel regulations).

Austel may rap knuckles; I'd be more concerned to warn people about Federal
Crimes Act provisions prohibiting recording people's communications without
their consent, under which one'd unlikely avoid emprisonment on conviction.

Ian

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