129 lines
4.7 KiB
Plaintext
129 lines
4.7 KiB
Plaintext
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USEAGE: To eaves drop on fone conversations
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Materials you will need
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======================
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(1) 9 volt battery with battery clip
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(1) 25-mfd, 15 volt electrolytic capacitor
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(2) .0047 mfd capacitors
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(1) .022 mfd capacitor
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(1) 51 pf capacitor
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(1) 365 pf variable capacitor
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(1) Transistor antenna coil
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(1) 2N366 transistor
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(1) 2N464 transistor
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(1) 100k resistor
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(1) 5.6k resistor
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(1) 10k resistor
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(1) 2meg potentiometer with SPST switch
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Some good wire, solder, soldering iron, board to put it on, box (optional)
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Schematic for The Lunch Box
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===========================
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This may get a tad confusing but just print it out and pay attention.
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[!]
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!
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51 pf
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!
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---+---- ------------base collector
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! )( 2N366 +----+------/\/\/----GND
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365 pf () emitter !
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! )( ! !
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+-------- ---+---- ! !
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! ! ! ! !
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GND / .022mfd ! !
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10k\ ! ! !
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/ GND +------------------------emitter
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! ! ! 2N464
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/ .0047 ! base collector
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2meg \----+ ! ! +--------+ !
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/ ! GND ! ! !
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GND ! ! !
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+-------------+.0047+--------------------+ ! !
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! +--25mfd-----+
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-----------------------------------------+ ! !
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microphone +--/\/\/-----+
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---------------------------------------------+ 100k !
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!
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GND---->/<---------------------!+!+!+---------------+
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switch Battery
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from 2meg pot.
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Notes about the schematic
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=========================
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1. GND means ground
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2. The GND near the switch and the GND by the 2meg potentiometer should be
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connected.
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3. Where you see: )(
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()
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)( it is the transistor antenna coil with 15 turns of
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regular hook-up wire around it.
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4. The middle of the loop on the left side (the left of "()") you should run
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a wire down to the "+" which has nothing attached to it. There is a .0047
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capacitor on the correct piece of wire.
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5. For the microphone use a magnetic earphone (1k to 2k).
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6. Where you see "[!]" is the antenna. Use about 8 feet of wire to broadcast
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approx 300ft. Part 15 of the FCC rules and regulation says you can't
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broadcast over 300 feet without a license. (Hahaha). Use more wire for an
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antenna for longer distances. (Attach it to the black wire on the fone
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line for about a 250 foot antenna!)
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Operation of the Lunch Box
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==========================
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This transmitter will send the signals over the AM radio band. You use the
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variable capacitor to adjust what freq. you want to use. Find a good unused
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freq. down at the lower end of the scale and you're set. Use the 2 meg pot. to
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adjust gain. Just fuck with it until you get what sounds good. The switch on
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the 2meg is for turning the Lunch Box on and off. When everything is adjusted,
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turn on an AM radio adjust it to where you think the signal is. Have a friend
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lay some shit thru the Box and tune in to it. That's all there is to it. The
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plans for a simple receiver are shown below:
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The Lunch Box receiver
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======================
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(1) 9 volt battery with battery clip
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(1) 365 pf variable capacitor
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(1) 51 pf capacitor
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(1) 1N38B diode
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(1) Transistor antenna coil
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(1) 2N366 transistor
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(1) SPST toggle switch
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(1) 1k to 2k magnetic earphone
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Schematic for receiver
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======================
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[!]
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!
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51 pf
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!
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+----+----+
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! !
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) 365 pf
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(----+ !
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) ! !
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+---------+---GND
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!
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+---*>!----base collector-----
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diode 2N366 earphone
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emitter +-----
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! !
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GND !
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-
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+
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- battery
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+
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GND------>/<------------+
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switch
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HOOK to RED wire to send over air waves
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