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BUG.TXT
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1998-07-21
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8KB
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277 lines
!! THE BUG DETECTOR !!
BY: FORD PREFECT
UPLOADED BY: The Phoney Phoner
and The Skeleton Krew
What you will need:
(the number in brackets is a reference
number which matches the schematic. The
number in paranthesise is the amount of
the part needed.)
[1] (1) 1n34a crystal diode
[2] (2) 2n107 audio transistors
(ge-2 or equivalent)
[3] (1) 3k ohm variable resistor
[4] (2) 560 ohm 1/2 watt resistor
[5] (1) 15k ohm variable resistor
[6] (1) 500 ohm variable resistor
[7] (1) .002 Uf capacitor
[8] (1) 1.5 Volt aa battery
[9] (1) aa battery holder
[10] (1) 0-300 microammeter
(lafayette 99-g-5028 or
equivalent)
[11] (1) 10 millihenry choke (ohmite
z-50)
[12] (1) single-pole single-throw
(spst) toggle switch
[13] (1) project box (radio shack)
[14] (1) antenna (either from an old
transistor radio or a stiff
piece of wire will also work)
[15] (1) 2000 ohm headset (or a mini-
ature earphone like most tv
and radios use)
the parts can be purchased from radio
shack for less than $20. This is a
very good high-gain meter-type bug
detector. It has a crystal diode with
2 amplification stages to boost the
power of the meter. This produces a
broad-band, battery-powered, receiver
that can sense radio-frequency transm-
itters up to a mile away. Unfortun-
ately, it will also pick up a commerc-
ial am or fm station up to 3 miles
away....
Bug detector schematics:
[14] [1]
(*)-----+------\<---+------+----\
\ \ \ \ \
\ \ \ \ \
\-/ ( / [7] \ \
v ) [3] \ --- \
[11] ( / ^^^ \
[0] ) --> \ \ \
\ \ / \ \
\ \ \ \-/ \
\-/ \ \ v \
v ----+ \
\ [0] \
[0] \ \
\-/ \
v \
\
[0] \
\
\
---------------------------------------
\ /----\
\ ( /--)-----------\ --->>b<<
\ ( \/ ) \ \
------(---\ ) \ \
( \\ ) ----+---\
( <--)-----\ \ \
[2] \----/ \ \ \
\ \ \
\ / \
[0] \-/ \ \
v / \
[4] \ \
/ \
\ \
\ \
>>a<< \
\
\
---------------------------------------
\
\ [12] [8&9]
\ ____ <-><+>
\ / \
---------() ()-----\ \---->>c<<
\
[4]
>>a<<--------\/\/\/\/\----->>c<<
---------------->>d<<
\
[2] /---\-----\
( \ )
( \-\ )
>>c<<----(---\ \-----)----\
( \-->-\ ) \
( ) \
\---------/ \
[0] \-/
v
[5]
>>b<<-------\/\/\/\/\---
^
\
\
------------>>d<<
[6]
>>d<<-------/\/\/\/\/--
^
\
\
Uploaded to: The Party Line
(415) 447 - 0963
************ CAR TRACKER *************
Uploaded By: The Phoney Phoner
And The Skeleton Krew
**************************************
By: Ford Prefect
"my name is bond, james bond."
My next gadget is what is called a
bumpbeeper. It attaches to the under
side of a car with magnets and then
sends out a signal that can be heard on
a radio.
Parts list: () = diagram #
(1) 2n635a transistor
(2) 4.3K 1/2 watt resistor
(3) 1 meg potentiometer
(4) 10k 1/2 watt resistor
(5) 50pf capacitor
(6) 365pf variable capacitor
(7) .005Uf capacitor
(8) .01Uf capacitor
(9) ferrite loopstick (from a crys-
(10) coil [see text] tal radio)
(11) single-pole single-throw switch
(12) 9 volt battery
(opt.) Battery clip & case
(13) antenna
this device is a constant tone signal-
ling source that can be tuned to any
clear spot below 1000 khz. If magnets
are attached to the case, it can quick-
ly be installed under the persons car.
(9) Is a standard ferrite loopstick tha
t can be purchased at radio shack.
(10) Is simply 12 turns of plastic cov-
ered hookup wire wound over (9).
13
(*)-------\(----+-----______--- >>a<<
\ \ ^^^^^^
\ 5 \ \ 9
--- -\(-- --\(--->>b<<
- 6 \ 7
v \
--->>a<<
>>a<<------+------+------o/ o-----
\ \ 11 \
/ --- \
\ - \
/ v \
4 \ --------
\ \
\ --[][]->>c<<
--->>b<< 12
"@ j >>c<<----/\/\/\/\----+-----+-------
2 \ \ \
\ \ \
>>d<<---)\------- \ \
v >>e<<
8 -----/\/\/\--
\ 3
>>f<<-----------+
/---\
1 ( \ )
( / /-)---->>d<<
( \ > )
( ----- )
( \ )
\---/
\
\
>>b<<
>>e<<-------
\
(
)
(
10 )
\
------>>f<<
>>d<<---
\
---
-
v (ground)
to tune the transmitter:
1)pick an empty spot on the am car
radio below 1000 khz.
2)Switch on the transmitter with the
spst switch.
3)Tune the 365 variable capacitor
slowly until a shrill note can be
heard from the car radio.
4)The pitch of the note is adjustable
by turning the 1 meg potentiometer
resistantly,
Ford Prefect
Uploaded to: The Party Line
(415) 447-0963
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