************ 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¤ø >>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 /////////////////////////////////////////////////////// // The PIRATES' HOLLOW // // 415-236-2371 // // over 12 Megs of Elite Text Files // // ROR-ALUCARD // // Sysop: Doctor Murdock // // C0-Sysops: That One, Sir Death, Sid Gnarly & Finn // // // // "The Gates of Hell are open night and day; // // Smooth is the Descent, and Easy is the way.." // ///////////////////////////////////////////////////////