OHA1250-044502PAT1250 Series

A A T T S S SERIES 1250 TRANSMITTER TECHNICAL MANUAL produced by: APPLIED TECHNOLOGY SOLUTIONS, INC. 4200-F Technology Court Chantilly, VA 22021 This manual contains information proprietary to Applied Technology Solutions, Inc. and may not be re-produced without expressed permission. A A T T S S DOCUMENT: fcc1250MAN.wpdISSUED:jan99REVISED: (ORIGINAL)PAGE: i SERIES 1250 TRANSMITTER TECHNICAL MANUAL produced by: APPLIED TECHNOLOGY SOLUTIONS, INC. 4200-F Technology Court Chantilly, VA 22021 APPLIED TECHNOLOGY SOLUTIONS, INC. DOCUMENT: fcc1250MAN.wpdISSUED:jan99REVISED: (ORIGINAL)PAGE: ii TABLE OF CONTENTS SECTIONTITLEPAGE ONEINTRODUCTION...................................................................................................................................1 1.0INTRODUCTION...................................................................................................................................1 1.1SPECIFICATIONS..................................................................................................................................1 TWOINSTALLATION.........................................................................................................................................................3 2.0GENERAL...............................................................................................................................................3 2.1CHANNEL SELECTION........................................................................................................................3 2.2POWER....................................................................................................................................................3 2.2.1Model 1250-04..........................................................................................................................3 2.2.2Model 1250-45..........................................................................................................................3 2.2.3Activation..................................................................................................................................3 2.3ANTENNA..............................................................................................................................................4 2.4MICROPHONE.......................................................................................................................................4 2.5CODE SELECT.......................................................................................................................................4 THREEOPERATION............................................................................................................................................................5 3.0GENERAL...............................................................................................................................................5 3.1SYSTEM 1200 COMPONENTS............................................................................................................5 3.1.1System Operation......................................................................................................................5 3.2PRIVACY CODES..................................................................................................................................5 FOURTHEORY OF OPERATION...................................................................................................................7 4.0GENERAL...............................................................................................................................................7 4.1FUNCTIONAL DESCRIPTION.............................................................................................................7 APPLIED TECHNOLOGY SOLUTIONS, INC. DOCUMENT: fcc1250MAN.wpdISSUED:jan99REVISED: (ORIGINAL)PAGE: iii 4.1.1Audio/Digital Section................................................................................................................7 4.1.2IF/RF Section............................................................................................................................8 4.2RF CHARACTERISTICS.......................................................................................................................8 FIVEMAINTENANCE..................................................................................................................................12 5.0TROUBLESHOOTING........................................................................................................................12 5.1MAINTENANCE..................................................................................................................................12 5.2REPAIRS...............................................................................................................................................12 APPLIED TECHNOLOGY SOLUTIONS, INC. DOCUMENT: fcc1250MAN.wpdISSUED:jan99REVISED: (ORIGINAL)PAGE: 1 SECTION ONE INTRODUCTION 1.0INTRODUCTION This document is the Operating Manual for the Series 1250 Transmitters, produced by Applied Technology Solutions, Inc. The Series 1250 includes the Models 1252 and 1253. Functionally and mechanically, both are identical with the exception being their transmit frequency assignment. As such, the use in this document of the terminology Series 1250, refers to both models in the series. The Series 1250 is part of the Voice Privacy Low Probability of Detection (VPLPD) System 1200. The System 1200 includes the Model 1245 Monitor Station and the Model 1225 Hand Held Transceiver. The System 1200 uses spread spectrum modulation to provide secure, low probability of detection and interception communications to the user. The transmitted voice data is scrambled with a user selected key, to provide voice privacy and an additional level of security. The System 1200 design incorporates an ATS proprietary self synchronizing design. This design provides nearly instantaneous receive…

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4.0 MEASUREMENT PLOTS FIGURE 3: 6dB Modulated Bandwidth FIGURE 4: Power Output Plot Peak Power Output-Modulated FIGURE 5: Antenna conducted spurious emission-modulated carrier (850 MHz – 950 MHz) FIGURE 6: Antenna conducted spurious emission-right modulated carrier (950 MHz – 2 GHz) FIGURE 7: Conducted spurious emission-left modulated carrier (500 MHz – 850 MHz) FIGURE 8: Conducted spurious emission 9 kHz to 1MHz FIGURE 9: Conducted spurious emission 1MHz to 10 MHz FIGURE 10: Conducted spurious emission 10 MHz to 100 MHz FIGURE 11: Conducted spurious emission 100 MHz to 500 MHz FIGURE 12: Conducted spurious emission 2 to 5 GHz FIGURE 13: Conducted spurious emission 5 to 9.07 GHz FIGURE 14: Power spectral density-modulated FIGURE 15: Power spectral density-modulated (Spectrum line resolved) FIGURE 16: Processing Gain at 906 MHz (22 dB)

5.0BLOCK DIAGRAM OF TRANSMITTER 1250 UNIT

2.0PRODUCT LABELING FIGURE 1: FCC ID LABEL FIGURE 2: LOCATION OF LABEL ON EUT This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. Label Location

2.0PRODUCT LABELING FIGURE 1: FCC ID LABEL FIGURE 2: LOCATION OF LABEL ON EUT This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. FCC ID: OHA1250-044502PAT Label Location

2.0PRODUCT LABELING FIGURE 1: FCC ID LABEL FIGURE 2: LOCATION OF LABEL ON EUT This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. FCC ID: OHA1250-044502PAT Label Location

10.0PHOTOS OF TESTED EUT Figure 14: Channel B M/N 1253 bottom view Figure 15: Channel A M/N 1252 top view Figure 16: Channel A M/N 1252 bottom view Figure 17: Channel B M/N 1253 top view Figure 18: Extended Service Case M/N 1250-45 top view Figure 19: Extended Service Case M/N 1250-45 bottom view Patch Antenna Patch Antenna Cover Patch Antenna Patch Antenna Cover Figure 20: Power Converter M/N 1250-09 top view Figure 21: Power Converter M/N 1250-09 bottom view Figure 22: Extended Service Case M/N 1250-45 inside view Figure 23: Battery Holder (J-Battery 7K6V) 1250-04 top view with microphone switch Antenna M/N 1250-02 Figure 24: Battery Holder (J-Battery 7K6V) 1250-04 bottom view with microphone switch Figure 25: Y-microphone/switch adapter view Figure 26: Microphone view

1.1PRODUCT DESCRIPTION The Series 1250 Transmitters are designed for body worn or concealment applications. The Series 1250 Transmitters include an internal microphone and have connectors for antenna and power as well an external microphone. In its basic, or naked, configuration, the user must connect antenna and power to the unit using the connectors. RF CHARACTERISTICS Channels:One (1), Factory set Channel Options Compatibility Channel ADirect and rgepeater Channel BDirect RF Power Output25mW Frequency Stability+100 ppm @ -25°C to +68°C Spurious and Harmonic Attenuation25dBc ModulationDirect sequence spread spectrum PN Sequence Length33,554,401 bits ANTENNA Naked Flatpack:External, 50 Ω Stand Alone:Integral AUDIO CHARACTERISTICS Frequency Response:±6 dB, 300-5800 Hz Mic Audio Processing:Dual Time Constant AGC Dynamic Range:55 dB, minimum Audio Encoding:CVSD Sampling Rate:62.9 KHz Data Scrambling:13 bit linear auto key MICROPHONE Internal:Knowles EK series External:input compatible with Knowles electret, such as EA or EK series CONNECTIONS Ext. Mic/Power:Microtech DR-4S-4-PC Shorting Plug:Tibbets SP-1 Antenna:MMCX Jack POWER Naked Flatpack Power Source:External, 5.0 to 7.5 VDC @ 115 mA Stand Alone Power Source:One Mallory 7K-6V alkaline battery Operating Time:1.5 hours, typical Power Source:4 AAA alkaline battery Operating Time:6.5 hours, typical With Model 1250-09 Power Converter Power Source:External, 6 to 15 VDC, 65 mA @ 12 VDC, typical SIZE Naked Flatpack:2.4" X 1.4" X 0.35" Model 1250-05:4.5" X 1.75" X 0.4" Model 1250-45:4" X 2.6" X 0.65" ENVIRONMENTAL Operating Temp.:-25° C to +68° C Storage Temp.:-40° C to +85° C

APPLICATION FOR FCC CERTIFICATION LOW POWER TRANSMITTER Applied Technology Solutions, Inc. Direct Sequence Spread Spectrum Transmitter MODEL: 1250 SERIES (25 mW) FCC ID: OHA1250-044502PAT February, 1999 REPORT PREPARED BY: EMI Technician: Administrative Writer: Rhein Tech Laboratories, Inc. Document Number: 990032 No part of this report may be reproduced without the full written approval of Rhein Tech Laboratories, Inc. This report concerns (check one):Original Grant: X Class II Change: Equipment Type: Transmitter Deferred grant requested per 47 CFR 0.457 (d) (1) (ii)?Yes:No: X If yes, defer until: Date Company name agrees to notify the Commission by: (date) of the intended date of announcement of the product so that the grant can be issued on that date. Transition Rules Request per 15.37?Yes:No: X If no, assumed Part 15, subpart B for unintentional radiators - the new 47 CFR [10-1-90 Edition] provision.. FCC ID: OHA1250-044502PAT i TABLE OF CONTENTS 1.0GENERAL INFORMATION...................................................................................................................1 1.1PRODUCT DESCRIPTION....................................................................ERROR! BOOKMARK NOT DEFINED. 1.2RELATED SUBMITTAL(S)/GRANT(S)..........................................................................................................2 1.3TEST SYSTEM DETAILS............................................................................................................................2 1.4CONFIGURATION OF TESTED SYSTEM.......................................................................................................3 1.5TEST METHODOLOGY..............................................................................................................................4 1.6TEST FACILITY........................................................................................................................................4 2.0PRODUCT LABELING.............................................................ERROR! BOOKMARK NOT DEFINED. 3.0SYSTEM TEST CONFIGURATION......................................................................................................5 3.1JUSTIFICATION.........................................................................................................................................5 3.2EUT EXERCISE SOFTWARE......................................................................................................................5 3.3SPECIAL ACCESSORIES.............................................................................................................................5 3.4MODULATED BANDWIDTH.......................................................................................................................6 3.5POWER OUTPUT.......................................................................................................................................6 3.6CONDUCTED SPURIOUS EMISSIONS...............................................................................................6 3.7RADIATED SPURIOUS EMISSIONS...................................................................................................6 3.8POWER SPECTRAL DENSITY.............................................................................................................6 3.8PROCESSING GAIN.............................................................................................................................7 3.8.1TEST CONFIGURATION: PROCESSING GAIN............................................................................8 3.9CONFORMANCE STATEMENT....................................................................................................................9 4.0 MEASUREMENT PLOTS...............................................................ERROR! BOOKMARK NOT DEFINED. 5.0BLOCK DIAGRAM OF TRANSMITTER 1250 UNIT.............ERROR! BOOKMARK NOT DEFINED. 6.0RADIATED MEASUREMENT PHOTOS................................ERROR! BOOKMARK NOT DEFINED. 7.0 CONDUCTED, FIELD STRENGTH CALCULATION, AND RADIATED TEST METHODOLOGY..10 7.1FIELD STRENGTH CALCULATION............................................................................................................10 7.2RADIATED MEASUREMENT.....................................................................................................................11 8.0CONDUCTED EMISSION DATA.........................................................................................................12 9.0RADIATED EMISSION DATA.............................................................................................................13 MODEL: CHANNEL A M/N1252 WITH CASE M/N 1250-45 AND PATCH ANTENNA...............................................13 10.0PHOTOS OF TESTED EUT......................................................ERROR! BOOKMARK NOT DEFINED. APPENDIX LISTING APPENDIX A: EMISSIONS EQUIPMENT LIST.......................................................................................................14 APPENDIX B: USER’S MANUAL...................................................................................................................15 FCC ID: OHA1250-044502PAT ii FIGURE INDEX FIGURE 1: FCC ID LABEL...............................................................................ERROR! BOOKMARK NOT DEFINED. FIGURE 2: LOCATION OF LABEL ON EUT.........................................................ERROR! BOOKMARK NOT DEFINED. FIGURE 3: 6DB MODULATED BANDWIDTH.......................................................ERROR! BOOKMARK NOT DEFINED. FIGURE 4: POWER OUTPUT PLOTS PEAK POWER OUTPUT-MODULATED............ERROR! BOOKMARK NOT DEFINED. FIGURE 5: CONDUCTED SPURIOUS EMISSION-MODULATED CARRIER..................ERROR! BOOKMARK NOT DEFINED. FIGURE 6: CONDUCTED SPURIOUS EMISSION-RIGHT MODULATED CARRIER........ERROR! BOOKMARK NOT DEFINED. FIGURE 7: CONDUCTED SPURIOUS EMISSION-LEFT MODULATED CARRIER..........ERROR! BOOKMARK NOT DEFINED. FIGURE 8: CONDUCTED …

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6.0RADIATED MEASUREMENT PHOTOS