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  1.  
  2.                                       
  3.       !!   THE BUG DETECTOR  !!          
  4.            BY: FORD PREFECT              
  5.   UPLOADED BY: The Phoney Phoner         
  6.                 and The Skeleton Krew    
  7.                                          
  8.  What you will need:                     
  9.  (the number in brackets is a reference  
  10.  number which matches the schematic. The 
  11.  number in paranthesise is the amount of 
  12.  the part needed.)                       
  13.                                          
  14.    [1] (1) 1n34a crystal diode           
  15.    [2] (2) 2n107 audio transistors       
  16.            (ge-2 or equivalent)          
  17.    [3] (1) 3k ohm variable resistor      
  18.    [4] (2) 560 ohm 1/2 watt resistor     
  19.    [5] (1) 15k ohm variable resistor                         
  20.    [6] (1) 500 ohm variable resistor     
  21.    [7] (1) .002 Uf capacitor             
  22.    [8] (1) 1.5 Volt aa battery           
  23.    [9] (1) aa battery holder             
  24.   [10] (1) 0-300 microammeter            
  25.            (lafayette 99-g-5028 or       
  26.             equivalent)                  
  27.   [11] (1) 10 millihenry choke (ohmite   
  28.            z-50)                         
  29.   [12] (1) single-pole single-throw      
  30.            (spst) toggle switch          
  31.   [13] (1) project box (radio shack)     
  32.   [14] (1) antenna (either from an old   
  33.            transistor radio or a stiff   
  34.            piece of wire will also work) 
  35.   [15] (1) 2000 ohm headset (or a mini-  
  36.            ature earphone like most tv   
  37.            and radios use)               
  38.                                          
  39.    the parts can be purchased from radio 
  40.  shack for less than $20.  This is a     
  41.  very good high-gain meter-type bug 
  42.  detector.  It has a crystal diode with  
  43.  2 amplification stages to boost the     
  44.  power of the meter.  This produces a    
  45.  broad-band, battery-powered, receiver   
  46.  that can sense radio-frequency transm-  
  47.  itters up to a mile away.  Unfortun-    
  48.  ately, it will also pick up a commerc-  
  49.  ial am or fm station up to 3 miles      
  50.  away....                                
  51.                                          
  52.        Bug detector schematics:          
  53.                                          
  54.      [14]           [1]                  
  55.                                          
  56.       (*)-----+------\<---+------+----\  
  57.        \      \           \      \    \                                       
  58.       \      \           \      \    \  
  59.      \-/     (           /  [7] \    \  
  60.       v      )       [3] \     ---   \  
  61.         [11] (           /     ^^^   \  
  62.      [0]     )       --> \      \    \  
  63.              \       \   /      \    \  
  64.              \       \   \     \-/   \  
  65.             \-/      \   \      v    \  
  66.              v       ----+           \  
  67.                          \     [0]   \  
  68.             [0]          \           \  
  69.                         \-/          \  
  70.                          v           \  
  71.                                      \  
  72.                         [0]          \  
  73.                                      \  
  74.                                         
  75.                                       \ 
  76. --------------------------------------- 
  77. \        /----\                         
  78. \       (   /--)-----------\   --->>b<< 
  79. \      (  \/    )          \   \        
  80. ------(---\      )         \   \        
  81.        (  \\    )          ----+---\    
  82.         (   <--)-----\         \   \    
  83.     [2]  \----/      \         \   \    
  84.                      \         \   \    
  85.                      \         /   \    
  86.                 [0] \-/        \   \    
  87.                      v         /   \    
  88.                            [4] \   \    
  89.                                /   \    
  90.                                \   \    
  91.                                \   \    
  92.                              >>a<< \    
  93.                                         
  94.                                         
  95.                                    \    
  96.                                         
  97.                                       \ 
  98. --------------------------------------- 
  99. \                                       
  100. \          [12]      [8&9]              
  101. \          ____      <-><+>             
  102. \         /             \               
  103. ---------()    ()-----\ \---->>c<<      
  104.                         \               
  105.                                         
  106.                                         
  107.                [4]                      
  108.                                         
  109. >>a<<--------\/\/\/\/\----->>c<<        
  110.                                         
  111.                                         
  112.                                         
  113.                 ---------------->>d<<   
  114.                 \                       
  115.         [2] /---\-----\                 
  116.            (    \      )                
  117.           (      \-\    )               
  118. >>c<<----(---\     \-----)----\         
  119.           (   \-->-\    )     \         
  120.            (           )      \         
  121.             \---------/       \         
  122.                          [0] \-/        
  123.                               v         
  124.                                         
  125.                                         
  126.                  [5]                    
  127.                                         
  128. >>b<<-------\/\/\/\/\---                
  129.                                         
  130.                ^                        
  131.                \                        
  132.                \                        
  133.                ------------>>d<<        
  134.                                         
  135.                                         
  136.                [6]                      
  137.                                         
  138. >>d<<-------/\/\/\/\/--                 
  139.                ^                        
  140.                \                        
  141.                \                        
  142.                                         
  143.                                         
  144.           Uploaded to:  The  Party  Line
  145.                     (415) 447 - 0963    
  146.  
  147.  
  148.  
  149. ************ CAR TRACKER *************  
  150.  Uploaded By: The Phoney Phoner         
  151.                And The Skeleton Krew    
  152. **************************************  
  153.                                         
  154. By: Ford Prefect                        
  155.                                         
  156.     "my name is bond, james bond."      
  157.                                         
  158. My next gadget is what is called a      
  159. bumpbeeper.  It attaches to the under   
  160. side of a car with magnets and then     
  161. sends out a signal that can be heard on 
  162. a radio.                                
  163.                                         
  164.  Parts list: () = diagram #             
  165.                                         
  166.     (1) 2n635a transistor               
  167.     (2) 4.3K 1/2 watt resistor          
  168.     (3) 1 meg potentiometer             
  169.     (4) 10k 1/2 watt resistor           
  170.     (5) 50pf capacitor                  
  171.     (6) 365pf variable capacitor        
  172.     (7) .005Uf capacitor                
  173.     (8) .01Uf capacitor                 
  174.     (9) ferrite loopstick (from a crys- 
  175.    (10) coil [see text]    tal radio)   
  176.    (11) single-pole single-throw switch 
  177.    (12) 9 volt battery                   
  178.   (opt.) Battery clip & case            
  179.    (13) antenna                         
  180.                                         
  181.  this device is a constant tone signal- 
  182. ling source that can be tuned to any    
  183. clear spot below 1000 khz.  If magnets  
  184. are attached to the case, it can quick- 
  185. ly be installed under the persons car.  
  186. (9) Is a standard ferrite loopstick tha 
  187. t can be purchased at radio shack.      
  188. (10) Is simply 12 turns of plastic cov- 
  189. ered hookup wire wound over (9).        
  190.                                         
  191.   13                                    
  192.   (*)-------\(----+-----______--- >>a<< 
  193.    \              \     ^^^^^^          
  194.    \        5     \       \   9         
  195.   ---             -\(--   --\(--->>b<<  
  196.    -           6      \   7             
  197.    v                  \                 
  198.                       --->>a<<          
  199.                                         
  200.                                         
  201.  >>a<<------+------+------o/ o-----     
  202.             \      \       11     \     
  203.             /     ---             \     
  204.             \      -              \     
  205.             /      v              \     
  206.          4  \              --------     
  207.             \              \            
  208.             \              --[][]->>c<< 
  209.             --->>b<<          12        
  210.                                         
  211.                                         
  212.   >>c<<----/\/\/\/\----+-----+-------   
  213.                2       \     \      \   
  214.                        \     \      \   
  215.        >>d<<---)\-------     \      \   
  216.                              v    >>e<< 
  217.                                         
  218.               8      -----/\/\/\--      
  219.                      \       3          
  220.      >>f<<-----------+                  
  221.                    /---\                
  222.                 1 (  \  )               
  223.                  (   / /-)---->>d<<     
  224.                 (   \  >  )             
  225.                  ( ----- )              
  226.                   (  \  )               
  227.                    \---/                
  228.                      \                  
  229.                      \                  
  230.                    >>b<<                
  231.                                         
  232.                                         
  233.  >>e<<-------                           
  234.             \                           
  235.             (                           
  236.             )                           
  237.             (                           
  238.       10    )                           
  239.             \                           
  240.             ------>>f<<                 
  241.                                         
  242.                                         
  243.                                         
  244.                                         
  245. >>d<<---                                
  246.         \                               
  247.        ---                              
  248.         -                               
  249.         v  (ground)                     
  250.                                         
  251.  to tune the transmitter:               
  252.                                         
  253.  1)pick an empty spot on the am car     
  254.      radio below 1000 khz.              
  255.  2)Switch on the transmitter with the   
  256.      spst switch.                       
  257.  3)Tune the 365 variable capacitor      
  258.      slowly until a shrill note can be  
  259.      heard from the car radio.          
  260.  4)The pitch of the note is adjustable  
  261.      by turning the 1 meg potentiometer 
  262.                                         
  263.                         resistantly,                                            
  264.                         Ford Prefect    
  265.                                         
  266. DOWNLOADED FROM P-80 SYSTEMS......304-744-2253
  267.