Long Range Spybug.

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

Components list

Part

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. 

Here's the schematic, any questions leave them I will answer quickly as possible.

Here is a picture of the PCB that I made for this spybug, or you could just make it on perfboard if you want. 

First I soldered the resistors on just below where the mic will go. These are R5 & R6.

Next I add C4 (10 uF cap), Q1,Q2 (2n3904 transistor) & R4 (100k)

Next step I add the electret microphone, and the two coils. The coils should be wrapped around a 1/4 inch drill bit 6 times to get the coil needed for this project.

Now I add C1 (102) capacitor, R1 (330 ohm res.), R3 (10k res.) and C4 ( the other 10uF capacitor)

In this step I add the last resistor (R2), then I checked to se if every coponent is where it should be just to be sure.

Finally comes the trimmer cap, the battery connector and the antenna wire. I chose to use a braided copper wire for this antenna just to try it but you can use whatever you like.

Next week I will be adding a new Instructable, the FM phone bug. This will hook up to one of the 2 phone lines