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- %+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+
- %+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+
- %+% UNDER SURVEILLANCE +%+
- %+% - +%+
- %+% PHONE TAPPING +%+
- %+% - +%+
- %+% BY +%+
- %+% THE DARK KNIGHT +%+
- %+% - +%+
- %+% 11/3/90 +%+
- %+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+
- %+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+
-
- DISCLAIMER:
- The author takes no responsiblity for, nor does he assume any liability for,
- damages resulting from the use of information in this document. This
- document is for informational purposes only.
-
- WARNING:
- Connection of unauthorised equipment to a public (or indeed private system is
- illegal and could lead to prosecution.
-
- INTRODUCTION:
-
- Now with the warnings over here is the equipment. Because of the highly
- sophisticated nature of the modern telephone network, the installation of the
- tap is a very tricky business indeed. It will take a capacitor (100nf), a
- pair of high impedance headphones, anything up to two crocodile clips and at
- least twelve seconds of concentrated effort. (See fig. 1)
-
- FIG 1:
-
- X---------------*---------------------------Y
- phone lines |
- |
- X---------------|----------*----------------Y
- | |
- --- |
- capacitor --- |
- | |
- |HEADPHONES|
-
-
- One alternative to hanging around waiting for the telephone to answer is to
- connect up a tape recorder. Now we come to the really sophisticated
- electronics: since it is waste of tape to run the recorder continuosly, it is
- useful to switch it on only when the phone is being used. Voice activated
- switches? Why bother. A relay will do the trick, connected in series with
- one of the lines. See plans on how to build a TAN box. There are plenty
- around.
-
- RADIO BUGS:
-
- The next step up is some kind of radio bug. In the days not so long ago when
- the BT issue phone was a wedge of cheese shaped affair with a dial on the
- front, a favourite bugging device used to be the 'drop in' mike. The handset
- microphone was a carbon granule device, quite bulky but easy to remove;
- unscrew the mouthpiece, slip off a pair of wires from their terminals and its
- out. The crafty buggers found a much better use for all that space than
- filling it with carbon granuals. Buying microphones from the very same
- people who supplied BT, they would empty out of the granuals, put in a much
- smaller mike and would empty out the granuals, put in a much smaller mike and
- a small radio transmitter, then seal the whole thing back together again.
- Drop it into the handset and off you go. It is estimated that the numbers
- made around the world ran into millions, so they were not uncommon! Still
- used for bugging public telephones, but not much good for the wide varity of
- office and home phones now in use.
-
- SERIES AND PARALLEL BUGS:
-
- Also very common and readily available are a variety of bugs which connect
- either in series with one telephone wire or in parallel across the two.
- The series bug has the advantage of only transmitting when the telephone is
- used; the parallel one transmits continuosly in its crudest form (and most
- commercial bugs are pretty crude) but can be a little more difficult to
- detect by simple voltage measurements. Let's face it, it would be a trivial
- matter to design a bug that is both triggered by use of the phone and
- virtually impossible to detect by voltage measurements, but since almost
- nobody takes seriously the idea that they may be a suitable target (do you
- think you are, for instance?) and therefore won't be checking, why bother
- with anything complicated?
-
- See picture 1 and 2 for details. (End of file)
-
- INFINITY TRANSMITTER:
-
- The most exotic of the commonly used listerning devices is the 'infinity
- transmitter', so called because once the victim can be snooped on from
- anywhere in the world. Anywhere his phone can be reached by direct dialling,
- that is. This is what you do: dial up the victim's number and hold your
- little black mystery box close to the mouthpiece. In the simplest versions,
- the mystery box just sends a tone down the line which is picked up by a
- frequency selective circuit inside the bug. The mystery box activates the
- infinity transmitter, which you previously attached to the victim's phone.
- Once activated, the transmitter prevents the phone from ringing, and instead
- sends down the line any sounds picked up by the victim's telephone, or by the
- bug's own internal microphone.
-
- This is how it works. On recieving the activating tone, the transmitter
- passes enough current between the two lines to fool BT's equipment into
- thinking that the phone has been answered, so the ringing tone is cancelled
- and the line is opened. Once connection is made, all the bug has to do is to
- modulate the line voltage in just the way the telephone itself would. Not
- very difficult. The victim is entirly unaware of anything happening and,
- with a hookswitch defeat installed, it could be his own telephone acting as
- a microphone for the transmitter. The bug will automatically cut out if the
- handset of the victim's phone is lifted, allowing it to be used normally.
-
- See picture 2 for details. (End of file)
-
- HOOK SWITCH DEFEAT:
-
- Much simpler than the infinity transmitter, and used in much the same way, is
- the hookswitch defeat. When you hang up the telephone, a switch disconnects
- the handset... unless, that is, somebody has doctored the phone. The
- simplest method is just to wire a resistor across the switch. In use you
- phone the victim, apologise for having called up the wrong number, let him
- hang up but keep your phone off the hook to hold open the connection.
- Then you listen in. The sound level won't be very high, so you may need an
- amplifier.
-
- The difficulty with a plain hookswitch is that you need access to the
- telephone itself and enough time to dismantle it. There is also the
- possibility that an innocent caller may be slow to hang up and find himself
- accidently eavesdroping. A bit of a giveaway. Hookswitch defeats are easy
- to spot by anyone familiar with the insides of a telephone, but can often be
- overlooked in inspection by a suspicious buggee since, unlike infinity
- transmitters and the like, it could easily be part of the workings of the
- phone.
-
- Take the idea of 'looking as if it belongs' to its conclusion and you have
- the 'lost' tranmitter. What you do is to find a large-ish component in the
- telephone (or typewritter, calculator, or whatever) which itself uses any
- signal you need access to. You then rush home to your garden shed and knock
- up a device which not only does what this component does, but contains a
- transmitter too. You package it to look exactly like the component you're
- replacing. Then you pop back one night and swap the two around. Anyone
- inspecting the phone or whatever will find it contains exactly the components
- it should - no more and no less. The transmitter is really and truly lost.
-
- This really is big league stuff - the kind of trick employees of rival
- governments like to play on each other. Not the kind of thing you will
- personally come across unless you have access to very valuable information
- indeed. There's an American company called Fox which could be persuaded to
- come up with the goodies if you approach them in the right way and have the
- funds. They're in the phone book.
-
- Okay that is about it for this document, but do bear in mind that BT are very
- touchy about having alien equipment connected to their lines, even if it is
- just a capacitor and headphones. And stay away from my phone, if you don't
- mind!!
-
-
- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- + CIRCUIT DIAGRAMS: +
- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-
-
- CIRCUIT 1:
-
- SERIES PHONE BUG:
- -=-=-=-=-=-=-=-=-
-
-
- ! ! W
- ! ! *-------*-------------*------* !
- ! ! ! ! C1 % TC & C4 %
- ! ! L1 &) R2 $ *------*----*
- ! ! ! ! ! !! ! ------ !
- *------*-----(+)Q1 !
- ! *-*----! ~ + !-* ! ! ! !
- ! ! ! ! ! ! ! !
- ! R1 $ ! BR1 ! R3 $ C2 % R4 $ C3 %
- ! ! ! ! ! ! ! !
- ! *-*----! ~ - !---------*------*------*------*
- ! ! ------
- ! !
- ! !
- ! !
- ! !
- ! !
-
- % = CAPACITOR
- $ = RESISTOR
- (+) = TRANSISTOR
- & = TUNING COIL
- &) = INDUCER
- W = AERIAL
-
-
- PARTS NEEDED:
-
- R1 = 270K
- R2 = 10K
- R3 = 10K
- R4 = 1K0
-
- C1 = 15pF
- C2 = 1nF0
- C3 = 1nF0
- C4 = 5pF0
-
- Q1 = ZTX300
-
- L1 = INDUCER 33uH
-
- BR1= BRIDGE RECTIFIER
-
- TC = TUNING COIL 3mm (4 OR 5 TURNS)
-
-
-
- CIRCUIT 2:
-
- PARALLEL PHONE BUG:
- -=-=-=-=-=-=-=-=-=-
-
- L1 W
- ! ! *-------*----*------&)----* !
- ! ! + = ! ! *---*--* ! !
- ! ! B1| ! R3$C2% C4%T1&--* %C6
- ! ! - = ! ! ! ! ! !
- ! ! R1 ! ! ! ! *--*-----*
- *----+-$-*---+-%-*--(+)Q1 *--*--(+)Q2
- ! ! ! ! ! ! *--* *--*
- ! ! N1@ ! R2$ ! ! %C3 R4$ %C5
- ! ! ! ! ! ! ! ! ! !
- ! *---*---*---*---)&(--*------*--*
- ! ! A1
- ! !
- ! !
- ! !
-
-
- % = CAPACITOR
- $ = RESISTOR
- (+) = TRANSISTOR
- & = TUNING COIL
- &) = INDUCER
- )&( = AUDIO TRANSFORMER
- =
- | = BATTERY
- =
- @ = NEON
- W = AERIAL
-
-
- NOTE: A * indicates a join or a corner and a + indicates a wire cross over.
-
-
- PARTS NEEDED:
-
- R1 = 10K
- R2 = 220K
- R3 = 12K
- R4 = 220R
-
- C1 = 10nF
- C2 = 47pF
- C3 = 1nF5
- C4 = 25pF
- C5 = 1nF5
- C6 = 10pF
-
- Q1 = ZTX500
- Q2 = ZTX300
-
- N1 = NEON
-
- A1 = AUDIO TRANSFORMER 25K )&( 1K0
-
- B1 = 9V BATTB
-
- L1 = INDUCER 1.8uH
-
- TC = TUNING COIL 3mm (4 OR 5 TURNS)
-
-
-
- CIRCUIT 3:
-
- INFINITY TRANSMITTER:
- -=-=-=-=-=-=-=-=-=-=-
-
-
- *---------*-----------------------------------*----------*----*
- ! ! ! ! !
- IMP ! $R2 $R8 $R11 !
- A1 ! ! ! R9 ! !
- *--)&(-----+-----* *---* *---+----$-----+--* !
- ! ! -----+-* ! ! ! ! ! ! ! !
- ! ! ! ! %C2 $R3 ! ! *--* ! ! !
- ! %C1 ! ! ! ! ! !Q4 ! ! ! ! !
- ! ! ! ! *-$-*--(+)Q2 *--(+) ! ! ! !
- ! ! --- ! ! !R7 ! ! C5 R5 R7 ! ! ! ZD1 ! ! !
- *--+--*-|~ +|-* ! *--(+)Q1*---*-%-$-*---*->>-*---*-$-(+)Q3! *-<_<--(+) ! !
- ! | | ! ! ! ! ! ! ! ! ! ! ! ! Q5 ! !
- ! |BR1| ! %C3 ! $R4 %C4 &)L1%C6 %C7 $R6 ! ! $R10 ! !
- ! | | ! ! ! ! ! ! ! ! ! ! ! ! ! !
- *--*----|~ -|---*---*---*---*---*-----*---*----*---*----*---*--* ! !
- --- ! ! !
- ! ! !
- D2 R12 ! ! !
- *------------------------------<<----$-------------+----------* !
- ! R13 ! !
- *--------------------$---* ! !
- ! ! ! !
- ! *---*---*---*-------+-------------------------+------------*
- ! ! ! ! ! ! !
- ! $R15%C10! ! ! !
- ! *---*--(+)Q8! ! !
- *----*---(+)Q7! ! ! ! !
- ! ! ! ! *--(+)Q9 ! !
- $R14 ! ! ! ! R18! !
- C8 ! ! ! ! *---*-$-* !
- *-%--*---(+)Q6 ! $R16 ! ! ! !
- ! ! ! ! ! ! ! ! !
- ()MIC%C9 ! ! %C11 $R17%C12%C13 !
- ! ! ! ! ! ! ! ! !
- *----*----*----*---*-------*---*---*-------------------------*
-
-
-
-
- % = CAPACITOR
- $ = RESISTOR
- (+) = TRANSISTOR
- &) = INDUCER
- )&( = AUDIO TRANSFORMER
- () = MICROPHONE
- >> = DIODE
- << = DIODE (POLARITY REVERSED)
- <_< = ZENER DIODE
-
-
- NOTE: A * indicates a join or corner and a + indicates a wire cross over.
-
-
- PARTS NEEDED:
-
- R2 = 33K
- R3 = 33K
- R4 = 4K7R
- R5 = 4K7
- R6 = 1M0
- R7 = 100K
- R8 = 68K
- R9 = 82K
- R10= 270K
- R11= 68K
- R12= 1K0
- R13= 10K
- R14= 390K
- R15= 390K
- R16= 10K
- R17= 56R
- R18= 15K
-
- C1 = 4nF7 unpolarised
- C2 = 10nF unpolarised
- C3 = 10nF unpolarised
- C4 = 10uF polarised +'ve to top
- C5 = 10nF unpolarised
- C6 = CHOOSE TO TUNE
- C7 = 4uF7 polarised +'ve to top
- C8 = 4uF7 polarised +'ve to right
- C9 = 1nF0 unpolarised
- C10= 1nF0 unpolarised
- C11= 2uF2 polarised +'ve to top
- C12= 47uF polarised +'ve to top
- C13= 1uF0 polarised +'ve to top
-
- Q1-Q9 = BC108
-
- A1 = AUDIO TRANSFORMER 500R )&( 10K
-
- D1 = 1N4148
- D2 = 1N4148
-
- ZD1= 6V8 ZENER DIODE
-
- L1 = INDUCER 40mH
-
-
- %+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+
- % This document was written by The Dark Knight.+
- % Contact me on ANGEL BBS - 0772 795476 24hrs. +
- % or on EQUALISER BBS - 0923 662127 24hrs. +
- %+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+%+
-
-
- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- +Sysops: Feel free to place this on your download section, but please ensure+
- +that this document and credits remain intact and unchanged. Thank you. +
- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-
-
-
-