home *** CD-ROM | disk | FTP | other *** search
- Phone Taps by The Jolly Roger
-
- Here is some info on phone taps. In this file is a schematic for a
- simple wiretap & instructions for hooking up a small tape recorder
- control relay to the phone line.
-
- First, I will discuss taps a little. There are many different
- types of taps. there are transmitters, wired taps, and induction
- taps to name a few. Wired and wireless transmitters must be
- physically connected to the line before they will do any good.
- Once a wireless tap is connected to the line,it can transmit all
- conversations over a limited reception range. The phones in the
- house can even be modifies to pick up conversations in the room
- and transmit them too! These taps are usually powered off of the
- phone line, but can have an external power source. You can get more
- information on these taps by getting an issue of Popular
- Communications and reading through the ads. 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 thisand itwill transmit
- all conversations! There is also an exotic type of wired tap known
- as the 'Infinity Transmitter' or 'Harmonica Bug'. In order to hook
- one of these, it must be installed inside the phone. When someone
- calls the tapped phone & *before* it rings,blows a whistle over
- the line, the transmitter picks up the phone via a relay. The mike
- on the phone is activated so that the caller can hear all of the
- conversations in the room. There is a sweep tone test at
- 415/BUG-1111 which can be used to detect one of these taps. If one
- of these is on your line & the test # sends the correct tone, you
- will hear a click. Induction taps have one big advantage over taps
- that must be physically wired to the phone. They do not 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 that 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 phone call. He fakes
- the conversation, but when he hangs up he slips some foam rubber
- cubes into the cradle. The called party can still hear all
- conversations in the room. When someone picks up the phone, the
- cubes fall away unnoticed.
-
- A tap can also be used on a phone to overhear what your modem is
- doing when you are wardialing, hacking, or just plain calling a
- bbs (like the White Ruins! Denver, Colorado! 55 megs online!
- Atari! Macintosh! Amiga! Ibm! CALL IT! 303-972-8566! By the way, i
- did this ad without the sysops consent or knowledge!).
-
- Here is the schematic:
- -------)!----)!(------------->
- )!(
- Cap ^ )!(
- )!(
- )!(
- )!(
- ^^^^^---)!(------------->
- ^ 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 highest resistance for a tape
- recorder or amplifier. You may find it necessary to add another
- 10 - 40K. The capacitor should be around .47 MFD. It's only
- purpose is to prevent the relay in the phone from tripping &
- thinking that you have the phone off of the hook. the audio output
- transformer is available at Radio Shack. (part # 273-138E for
- input). The red & the white wires go to the output device. You may
- want to experiment with the transformer for the best output.
- Hooking up a tape recorder relay is easy. Just hook one of the phone
- wires (usually red) to the the end of one of the relay & the ther
- end just loop around. This bypasses it. It should look like this:
-
- ------^^^^^^^^^------------
- ---------
- RELAY^^
- (part #275-004 from Radio Shack works fine)
-
- If you think that you line is tapped, the first thing to do is to
- physically inspect the line yourself ESPECIALLY the phones. You
- can get mike replacements with bug detectors built in. However, I
- would not trust them too much. It is too easy to get a wrong
- reading.
-
- For more info:
-
- BUGS AND ELECTRONIC SURVEILANCE from Desert Publications
- HOW TO AVOID ELECTRONIC EAVESDROPPING & PRIVACY INVASION. I do not
- remember who this one is from... you might want to try Paladin
- Press.
-
- -Mondain-
-
-
-