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128 lines
7.3 KiB
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128 lines
7.3 KiB
Plaintext
<conspiracyFile>The War On Privacy Hits You In The Pocket Book!
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COPYRIGHT (C) 1991 BY FULL DISCLOSURE. ALL RIGHTS RESERVED.
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Why does the FBI and other select government agencies pay over $4000 for a
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pocket tape recorder? One of the most important elements in an electronic
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surveillance operation is the tape recorder. Whether hidden in one's pocket
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or recording information from a wiretap or bug, the tape recorder can be the
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key to success or failure.
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The FBI had a need for a specialized recorder, so they contracted with the
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U.S. subsidiary of a Swiss company, Nagra Magnetics, Inc. to design a
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recorder that met their needs. The result being the Nagra JBR subminiature
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recorder and PS-1 playback system.
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When asked whether the unit was named after Jim B. Reames, an FBI employee
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who helped design the recorder, a Nagra spokeswomen refused to say, but
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pointed out that the initials were in fact the same.
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The design and manufacture of the recorder has been so secret and important
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to the FBI (and two other unnamed government agencies who are supposedly the
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sole users of the recorder) that any public availability of information on
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the recorder would ``make the machine extinct,'' according to an employee of
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Narga who refused to provide any details on the recorder in a telephone
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interview.
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It is also interesting to note that in the literature obtained by Full
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Disclosure from the NATIA show, several of the companies made mention of
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Narga tape recorders, but not the JBR model.
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A freelance reporter who contacted Nagra in August, 1990, was informed that
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someone from the Justice Department had just visited to express the
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government's desire to keep the public ignorant about the JBR recorder.
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Full Disclosure contacted Nagra on September 24, 1990 and was informed that
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they received a letter from the Government ``last week'' informing them that
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they couldn't give out any information on the JBR recorder. Nagra refused to
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disclose what agency sent the letter.
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The company spokeswomen, also stated that they are not allowed to advertise
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the unit anywhere, and if they did they would ``lose all government
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contracts.'' She further stated that they wanted to advertise it in
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<N>Law and Order and could not.
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Marketing is done by word of mouth and narcotics trade shows, she said. This
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seemed a little contrary to the first spokesman who said that there were only
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three customers for the JBR recorder.
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Full Disclosure's investigative reporting team, was able to obtain complete
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specifications on both the recorder and playback unit.
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Because of the secrecy around the recorder and its specifications, the unit
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is sole-sourced from Nagra. Inevitability when a product is available from a
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single source, there is no price competition.
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The following public disclosure of the JBR specifications should serve two
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purposes:
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1) to open a competitive market for this type of recorder, and
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2) to give the American public more information on the tools the government
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uses to spy upon. Thereby increasing the public's ability to participate in
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political process as it relates to oversight and domestic use of spy
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technology.
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@SUBHEAD = JBR RECORDER
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``The recorder is stereophonic, with two totally independent channels. A
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third central track records a reference signal of 5461 Hz. This signal is
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used later on in the playback system as a reference, in order to correct for
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speed variations.
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``The recording speed is 15/16 ips. This speed is stabilized by an optical
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encoder system. In order to save energy and to reduce radiation as much as
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possible, no erasing head is provided. For basically the same reasons, and to
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ensure that the tapes remain genuine, there is also no playback facility
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provided on the recorder.
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``Special Kudelski cassettes are used to provide two hours non stop recording
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autonomy. A set of three ``N'' size batteries are used allowing ten hours of
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operation.
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``Even though the detectablility is minimal, the bias frequency is of 32KHz
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and has thus the same radiation as a quartz watch. The recorder weight is
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less than 200 grams, includes its cassette and batteries, and is really
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pocket size with cover: 110.2 x 62.6 x 20.8 mm (4.34: x 2.46" x 0.82").
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Miniature microphone and remote controls are available with different length
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cables.
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So-called tape recorder detectors normally detect the presence of the ``bias
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oscillator'' in tape recorders. By using a non-standard and one that is also
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commonly used by other common devices makes detection by such a means more
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difficult.
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@SUBHEAD = JBR Specifications:
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SIZE (L x W x H): 110.2 x 62.6 x 20.8mm, with cover: 4.34" x 2.46" x 0.82"
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with cover & plugs: 110.2 x 64.3 x 20.8mm / 4.34" x 2.53" x 0.82"
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Weight: Recorder with cover: 143 g, Cassette with 2 hr tape: 22 g, Batteries,
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3 pcs: 29 g, Microphones including 4' cable, 2 pcs: 30 g, Remote control, 3'
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cable:18 g. Total weight: 242 g.
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Environment: Operating position: Any, Temperature: 0 C to 40 C (32 F to
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104F). Humidity: 20% to 95% non-condensing.
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Power Supply: Supply voltage: 2.7 to 5V DC, nominal 4.5 V. ``Batt OK''
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indicator threshold: 3.4V. Battery standard type: ASA ''N'', ANSI ``L20'',
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IEC ``LR1''. Current consumption - start of tape: 40mA typical, - end of
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tape: 50ma typical.
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TAPE: Tape transport: without capstan, constant speed. Tape type: chromium
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dioxide in special JBR cassette. Tape width: 3.81 mm (0.150"). Tape Thickness
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(total): 9u (0.35mil) 120 min. 12u (0.48mil) 90 min. Max recording time: 2
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hours. Audio tracks: 1.20mm x 2. Control tract (center): 0.40 mm. Track
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spacing: 0.50 mm. Nominal tape speed: 2.38 cm/s (15/16ips). Tape speed
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accuracy: better than +/- 2%. Wow and flutter: typ. 2.5% peak-to-peak, NAB (=
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DIN 45507) weighted. Start time: less than 4 seconds
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Inputs: 2 microphone inputs. Maximum input level: 60 mV RMS. Audio indicator
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threshold: 30 mV RMS input -3 dB on tape. Input impedance: 80 K. Microphone
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sensitivity: 10 mV/PA (1 Pa=10 ubar). Maximum SPL: 110 dB (0 dB SPL = 20
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uPa). Signal to noise ratio, unexpanded: better than 51 dB ASA A weighted.
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Frequency response: 170 Hz to 4.5 kHz +/- 3dB. Total harmonic distortion:
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less than 3%. Compression ratio: 2:1 in dB. Compressor operating range: 80 dB
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The above is reprinted from Full Disclosure Newspaper. Subscribe today and
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get interesting articles like the above, plus more... pictures, graphics,
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advertisement, and more articles. Full Disclosure is your source for
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information on the leading edge of surveillance technology. Print the
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following form, or supply the information on a plain piece of paper:
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<div>
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Please start my subscription to Full Disclosure for:
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[ ] Sample issue, $2.00
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[ ] 12 issue subscription, $18.00
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[ ] 24 issue subscription, $29.95
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With 24 issue susbcription include free one of the following:
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[ ] Directory of Electronic Surveillance Equipment Suppliers
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[ ] Citizen's Guide on How to Use the Freedom of Info/Privacy Acts
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[ ] Maximizing PC Performance
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Also available separately:
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[ ] Directory of Electronic Surveillance Equipment Suppliers, $6.00
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[ ] Citizen's Guide on How to Use the Freedom of Info/Privacy Acts, $5.00
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[ ] Maximizing PC Performance, $6.00
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Illinois residences, add 6.5% sales tax on above 3 items.
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Enclosed is payment in the form of:
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[ ] Check/Money order, [ ] Visa, [ ] Mastercard
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Card no:<div> Exp date:<div>
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Signature:<div>
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Phone:<div>
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(required for credit card orders)
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My name/address:
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Name:<div>
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Street:<div>
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City/State/Zip:<div>
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Return to: Full Disclosure, Box 903, Libertyville, Illinois 60048
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</conspiracyFile> |