I am going to show you a step-by-step process to building a spybug from common electrical componenets.

Step 1: Components

Components list


  1. C1  1n disk capacitor (102) 1 pc.
  2. C2  5.6pF disk capacitor(562) 1 pc.
  3. C3, C4 10 uF Elec. Capacitor(25-50v) 2 pcs.
  4. C5 3-18 Trimmer Capacitor 1 pc.
  5. R1 330 ohm 1/8 w  Resistor 1 pc.
  6. R2, R5, R6 4.7k 1/8 w Resistor 3 pc.
  7. R3 10k 1/8 w Resistor 1 pc.
  8. R4 100k 1/8w Resistor 1 pc.
  9. Q1, Q2 2N2222 NPN Transistor 2 pcs.
  10. L1, L2 5-6 turns copper coil 2 pcs.
  11. 10mm Electret microphone 1 pc.
  12. 9v battery and clip

     All Resistors can be substituted with 1/4 watt. The transistor can be substituted with a 2n3904-06 transistor. 

Cliffyd I maid ot the photo I post but it could not work why? Reply me soon.
<p>i made it but it coudn't work why tell me why?</p>
I made one but could not work. Why? Tell me. I made as U told in the diagram
how far is ? (the range)
100 meters
<p>Is 100mt a long range?</p>
it says &quot;5-6 turns of .5 dia wire&quot; what measurement is .5?
i meant is it in milimeters, or other type of measurement
i think im on the wrong page/thread http://www.instructables.com/id/Making-a-simple-spybug/
i have no idea what frequency this broadcasts at. is this just supposed to be obvious? i'm going to assume 100 MHz until you say something else. Hmm, that doesn't work. there are a lot of frequencies out there...
No sorry try around 88-94mhz <br>
wow, now I can do surveillance on beehard44 (lol, pun intended)
this is supposed to be our communications in sierra charlie hotel *CENSORED CENSORED* lima, riiight?
uuh, roger that hotel-bravo-four-four. you forgot to mention we needed 2 coils, or did you make another version?over. (all pun intended)
uhhhh # 10 says 2 coils, is that what you mean? <br>
Oh, I didn't see that there.... Now, all I have to do is get that other ceramic capacitor that messed up my circuit and put it where it belongs... then solder.... I should have breadboarded it before I began soldering. Thanks for the correction.
what's mit
what number is the PCB
could you post a pdf of the pcb artwork
one more thing, for the 5.6 cap, 5.6 what? pf,uf,...? can you give me a link to the one you bought? thanks
is this help ? http://electronics-diy.com/calculators.php
not really, thanks anyway

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Bio: I am a 35 yr. old licensed Iron worker/ Fabricator/ Welder/ Millwright but now in college currently in 2nd of 3rd year for Civil Engineering ... More »
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