File: WIRETAPPING FILE
HERE IS SOME INFO ON PHONE TAPS. I HAVE ENCLOSED A SCHEMATIC FOR A SIMPLE
WIRETAP &
INSTRUCTIONS FOR HOOKING UP A TAPE RECORDER CONTROL RELAY TO THE
PHONE LINE.
FIRST I’LL DISCUSS TAPS A LITTLE. THERE ARE MANY DIFFERENT TYPES OF TAPS.
THERE ARE
TRANMITTERS, WIRED TAPS AND INDUCTION TAPS TO NAME A FEW. WIRED AND
WIRELESS TRANSMITTERS
MUST BE PHYSICALLY CONNECTED TO THE LINE BEFORE THEY’LL
DO ANY GOOD. ONCE A WIRELESS TAP IS
CONNECTED TO THE LINE, IT CAN TRANSMIT ALL
CONVERSATIONS OVER A LIMITED RANGE. THE PHONES IN
THE HOUSE CAN EVEN BE
MODIFIED TO PICK UP CONVERSATIONS IN THE ROOM & TRANSMIT THEM TOO!
THESE TAPS
ARE USUALLY POWERED OFF THE PHONE LINE, BUT CAN HAVE AN EXTERNAL POWER SOURCE.
WIRED TAPS, ON THE OTHER HAND, NEED NO POWER SOURCE, BUT A WIRE MUST BE RUN
FROM
THE LINE TO THE LISTENER OR TO A TRANSMITTER. THERE ARE OBVIOUS
ADVANTAGES OF WIRELESS TAPS
OVER WIRED ONES. THERE IS ONE TYPE OF WIRELESS
TAP THAT LOOKS LIKE A NORMAL TELEPHONE MIKE.
ALL YOU HAVE TO DO IS REPLACE THE
ORIGINAL MIKE WITH THIS & IT’LL TRANSMIT ALL
CONVERSATIONS!
THERE IS AN EXOTIC TYPE OF WIRED TAP KNOWN AS THE ‘INFINITY TRANSMITTER’
OR
‘HARMONICA BUG’. IN ORDER TO HOOK UP ONE OF THESE, YOU NEED ACCESS TO THE
TARGET
TELEPHONE. IT HAS A TONE DECODER & SWITCH INSIDE. WHEN IT IS
INSTALLED, SOMEONE CALLS THE
TAPPED PHONE & *BEFORE* IT RINGS, BLOWS A WHISTLE
OVER THE LINE. THE X-MITTER RECEIVES
THE TONE & PICKS UP THE PHONE VIA A
RELAY. THE MIKE ON THE PHONE IS ACTIVATED SO THE
CALLER CAN HEAR ALL
CONVERSATIONS IN THE ROOM.
THERE IS A SWEEP TONE TEST AT
415/BUG-1111 WHICH CAN BE USED TO DETECT ON OF
THESE TAPS. IF ONE OG THESE IS ON YOUR LINE
& THE TEST # SENDS THE CORRECT
TONE, YOU’LL HEAR A CLICK.
INDUCTION TAPS
HAVE ONE BIG ADVANTAGE OVER TAPS THAT MUST BE PHYSICALLY
WIRED TO THE PHONE. THEY DON’T HAVE
TO BE TOUCHING THE PHONE IN ORDER TO PICK
UP THE CONVERSATION. THEY WORK ON THE SAME
PRINCIPLE AS THE LITTLE SUCTION-CUP
TAPE RECORDER MIKES YOU CAN GET AT RADIO SHACK. INDUCTION
MIKES CAN BE HOOKED
UP TO A TRANSMITTER OR BE WIRED. HERE IS AN EXAMPLE OF INDUSTRIAL
ESPIONAGE
USING THE PHONE: A SALESMAN WALKS INTO AN OFFICE & MAKES A FONE CALL. HE
FAKES THE CONVERSATION, BUT WHEN HE HANGS UP HE SLIPS SOME FOAM-RUBBER CUBES
UNDER THE
HANDSET, SO THE FONE IS STILL OFF THE HOOK. THE CALLED PARTY CAN
STILL HEAR ALL CONVERSATIONS
IN THE ROOM. WHEN SOMEONE PICKS UP THE FONE, THE
CUBES FALL AWAY UNNOTICED. I USE A TAP ON MY
LINE TO MONITOR WHAT AE-PRO IS
DOING WHEN IT AUTO-DIALS, SINCE IT DOESN’T TAKE ADVANTAGE OF
THE HANDSET ON THE
APPLE CAT II. I CAN ALSO HOOK UP THE TAP TO A CASSETTE RECORDER OR
AMPLIFIER.
HERE IS THE SCHEMATIC:
——-)!—-)!(————->
)!(
)!(
)!(
)!(
^^^^^—)!(————->
^ 100K
!
!<INPUT
THE 100K POT IS USED FOR VOLUME. IT SHOULD BE ON ITS HIGHEST (LEAST
RESISTANCE)
SETTING IF YOU HOOK A SPEAKER ACROSS THE OUTPUT, BUT IT SHOULD BE SET ON ITS
TO ADD
ANOTHER 10-40K. THE CAPACITOR SHOULD BE AROUND .47 MFD. IT’S ONLY
PURPOSE IS TO PREVENT THE
RELAY IN THE CO FROM TRIPPING & THINKING YOU HAVE THE
FONE OFF THE HOOK. THE AUDIO OUTPUT
TRANSFORMER AVAILABLE AT RADIO SHACK
(273-1380) IS FINE FOR THE X-FORMER. THE BLACK &
GREEN ARE FINE FOR INPUT & THE
RED & WHITE GO TO THE OUTPUT DEVICE. YOU MAY WANT TO
EXPERIMENT WITH THE
X-FORMER FOR THE BEST OUTPUT. HOOKING UP A TAPE RECORDER CONTROL RELAY IS
EAST.
JUST ONE OF THE FONE WIRES (USU. RED) BEFORE THE TELEPHONES & HOOK ONE END TO
ONE WIRE OF THE RELAY & THE OTHER END TO THE OTHER RELAY WIRE. LIKE THIS:
——^^^^^^^^^————
———
RELAY^^
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