旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � The International Information Retrieval Guild � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 Presents 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � The IIRG Technical Journal Volume III, Issue 4 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 � May 17, 2000 컴컴컴� / 컴컴컴� Editor: Mercenary � � � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � - In This Issue of the Journal - � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 � The Poor Man's Phone Tap � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 ////// ////// /////// //////// // // // // // // // /////// // //// // // // // // // ////// * ////// * // // * ///////// * �]� International Information Retrieval Guild �[- OFFICIAL DISCLAIMER... All information in the IIRG Technical Journals is from Member contributed material. The Members and Editors of the IIRG disclaim any liability from any damages of any type that the reader or user of such information contained within this journal may encounter from the use of said information. All files are brought to you for entertainment purposes only. We also assume all information infringes no copyrights and hereby disclaim any liability or responsibility. IIRG Technical Journal is (C) 1995-2000 by The IIRG IIRG and INTERNATIONAL INFORMATION RETRIEVAL GUILD is (C) 1982 Non-commercial reproduction encouraged. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � The Poor Man's Phone Tap � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 � Design and Implementation: Mercenary � � � � Technical Quality Assurance: The IIRG � � � � Caffeine Administration: Black_IC � � � � Shout Outs: All IIRG members, BoW, � � Pinguino, Snock, and the #iirg crew � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 旼커旼컴컴컴컴컴컴컴컴컴컴컴왯컴� � 척 Section 1: Background 척 � 읕컨좔컴컴컴컴컴컴컴컴컴컴컴좋컴� This circuit is for you to design a miniature FM telephone transmitter. The circuit attaches in series to your telephone line and will transmit the conversation 1/4 to 3/4 of a mile to a FM receiver. The circuit tunes from 88 to 108 MHz and beyond. Just tune the unit to a clear spot in the FM band of your radio. The circuit is completely parasitic; I.E. uses the power from the telephone line and needs no battery. The circuit might be used to share or record conversations, but is not intended for illegal use like a hidden parasitic phone tap. 旼커旼컴컴컴컴컴컴컴컴컴컴컴컴컴왯컴� � 척 Section 2: Implementation 척 � 읕컨좔컴컴컴컴컴컴컴컴컴컴컴컴컴좋컴� Our Poor Man's Phone Tap circuit is a VHF oscillator comparable to the circuits used in childrens wireless microphones. Unlike these microphones, our circuit has been designed to be powered by the phone line itself. Adding a battery to The circuit would have defeated the purpose of its small size. We have achieved this by using the phone line through the diode bridge circuit. By augmenting the antenna through household wiring or steel frame construction, you should be able to increase the operational range of the unit. In my test circuit I was able to achieve a 2-mile reception by connecting to the facilities roof mounted communications antenna,(Don't Ask). Variations of this type of circuit have been published in several books, but this is the smallest and most effective implementation I have built and experimented with. 旼커旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커敏컴� � 척 Section 3: Hardware Construction 냉� � 읕컨좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨좋컴� The first thing you should do is design a circuit board for your parts, I just used a Rat Shack PCB PN#276-148 , and cut it down to the smallest size Possible for the components used. Hardware construction is pretty straightforward, due to the minimum number of components involved. The following will be required: 2 4.7 or 5.0 pf disc capacitors (Radio Shack/Mouser/Digi-Key) 1 47 or 56 pf disc capacitor (Radio Shack/Mouser/Digi-Key) 1 .001 uf capacitor (Radio Shack/Mouser/Digi-Key) 1 2.2 or 3.3 uH minature inductor (Mouser/Digi-Key) 1 slug-tuned coil (Mouser/Digi-Key) 1 1K ohm resistor (brown-black-red) (Radio Shack/Mouser/Digi-Key) 1 10K ohm resistor (brown-black-orange) (Radio Shack/Mouser/Digi-Key) 1 NPN Transistor 2N3904 (Radio Shack/Mouser/Digi-Key) 4 Diodes 1N914 (Radio Shack/Mouser/Digi-Key) 1 PCB (Radio Shack) 2 4" wires 1 2' wire Soldering Iron Solder For assembly, just follow the supplied schematic, if you can't read a schematic, you should not be attempting to build this circuit. If you can't use a catalog and absolutely need part #'s, e-mail me at iirg@iirg.org and after we get through laughing, we'll send you the catalog part numbers. 旼커旼컴컴컴컴컴컴컴컴컴컴컴왯컴� � 척 Section 4: Operation 척 � 읕컨좔컴컴컴컴컴컴컴컴컴컴컴좋컴� Operation is extremely easy also. Just connect your two input wires in series with the telephone line of your target. Connect your antenna wire to either the buildings supporting steel frame or connect it to the ground of the wall socket if your hooking into a wall mounted outlet. If your hooking in through a outside junction box, consider looking for roof mounted antennas you can piggyback your intercepted communications off of. When setting up the tap for the first time, the line must be in use. Use the telephone or your linesman handset and dial a joke or party line. Use a non-metallic alignment tool to adjust the coil until you hear the phone on a open frequency on your FM radio. I use a walkman with earplug when installing one of these devices. In our area I prefer to use between the 88-90 MHz range as there are more open frequencies. I also try to stay away from any "popular" station frequencies, if the target uses a radio you don't want them discovering your tap when tuning into their favorite station. Please note that the unit can be tuned above 108 MHz and below 88 MHz unlike some commercial units. Just be aware that TV channel 5 resides at 76-82 MHz and Channel 6 is at 82-88 MHz. I only tune the device above or below its normal Operating range when I'm tapping a potential target that may have FM radio use on site. Nothing is worse than having a secretary tune in on her boss's phone and run in with her radio. Of course when tuning out of range, use a scanner to optimize your reception. I know an individual operating one of these units in Hartford, CT for over 2 years now. The unit still functions as well as the first day it was installed. He's heard every word his boss has said on the phone for that period of time. 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� Editor's Note: Please be aware that the Poor Man's Phone Tap is an "intentional radiator" and its use is covered by Part 15 of the FCC Rules. This means that the tap should not interfere with FM radio or TV reception. With it's limited range and power this should not present a problem. However, if you do have any anal retentive HAM operators in your area, they will complain if your "pirate" broadcasting is discovered. This tap is also technically illegal to use. Now I know none of you out there would ever consider using our device in an illegal manner so I will just finish up by saying... "When more than fifty percent of the people are breaking the law, there is something wrong with the law..." 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� Comments and suggestions about this and future issues of the IIRG Tech Journal are welcome. Contact Mercenary at iirg@iirg.org or via snail mail at: The IIRG 862 Farmington Avenue Suite 306 Bristol, CT 06010 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- The IIRG Technical Journals (C) IIRG 1995-2000 - May Odin Guide Your Way - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-