User's Manual

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To: Bruno Clavier

Rhein Tech Laboratories, Inc.

From: Anthony J. Coviello

Applied Technology Solutions, Inc

Subject: Response to FCC questions and revised Model 1225 Operating Manual

Date: September 5, 1999

A. The training is provided as a lecture with extensive question and answers.

Training also includes hands on demonstrations. The class normally takes

approximately 4 hours and the class size is limited. The training material

previously submitted is presented to the class in its entirety. As shown, this

material includes information pertaining to controlling exposure limits. This

material and the Operating Manual is provided to each attendee. The Operating

Manual is also provided with the equipment.

B. Manual has been revised. See section 1.0

C. The Model 1240 is not part of this filing. RF energy substituted for

electronic energy.

D. For covert surveillance applications, the microphone/earpiece assembly

allows the unit to be hidden from sight, i.e. clipped on a belt or placed inside

another object such as a backpack, and the earpiece used to monitor reception.

The earpiece disables the internal speaker so others can not overhear radio

traffic. Typically, when used in this mode of operation, the transmit

capability of the radio is not used. Section 2.3 has be modified.

Summary of content (20 pages)

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To: Bruno Clavier Rhein Tech Laboratories, Inc. From: Anthony J. Coviello Applied Technology Solutions, Inc Subject: Response to FCC questions and revised Model 1225 Operating Manual Date: September 5, 1999 A. The training is provided as a lecture with extensive question and answers. Training also includes hands on demonstrations. The class normally takes approximately 4 hours and the class size is limited. The training material previously submitted is presented to the class in its entirety.
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MODEL 1225 TRANSCEIVER TECHNICAL MANUAL produced by: APPLIED TECHNOLOGY SOLUTIONS, INC. 4200-F Technology Court Chantilly, VA 20151 This manual contains information proprietary to Applied Technology Solutions, Inc. and may not be re-produced without expressed permission.
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MODEL 1225 TRANSCEIVER TECHNICAL MANUAL produced by: APPLIED TECHNOLOGY SOLUTIONS, INC.
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TABLE OF CONTENTS SECTION TITLE PAGE ONE INTRODUCTION 1 1.0 GENERAL 1.1 SPECIFICATIONS 1.2 CONTROLS, INDICATORS, USER I/O TWO OPERATION 4 2.0 GENERAL 4 2.1 ATS 1200 SYSTEM COMPONENTS 4 2.2 MODEL 1225 OPERATION 4 2.2.1 Safety Considerations 4 2.3 EARPIECE/MICROPHONE ASSEMBLY 5 2.4 BATTERY 5 2.5 ANTENNA 5 2.6 PRIVACY CODES 1 1 3 5 THREE THEORY OF OPERATION 6 3.0 GENERAL 6 3.1 FUNCTIONAL DESCRIPTION 6 3.1.1 Audio/Digital Section 3.1.2 RF/IF Section 7 3.
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SECTION ONE INTRODUCTION 1.0 GENERAL This document is the Operating Manual for the Model 1225 Hand Held Transceiver produced by Applied Technology Solutions, Inc. The Model 1225 is one component of the Voice Privacy Low Probability of Detection (VPLPD) System 1200. Other System 1200 components include the Model 1245 Monitor System and the Series 1250 Transmitters. The System 1200 uses spread spectrum modulation to provide secure, low probability of detection and interception communications to the user.
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RF CHARACTERISTICS RF Channels: 2, Crystal Controlled Normal Mode: Transmit/Receive Channel A or B Repeater Mode: Transmit Channel A, Receive on Channel B Transmit Power Output: Emissions Spurious: Out Of Band: Freq.
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VOICE DATA SCRAMBLING Type: Synchronous Key Key Generation: External, Key Storage: Internal, Number of Keys: Two sets, Stream Hand Held, Model 1260 Key Loader non-volatile memory Private and Common USER CONTROLS On-Off/Volume Channel (Mode) Select Code Select PTT INDICATORS Power/Battery Low Transmit POWER REQUIREMENTS Battery Pack: 1200 mAh, Nickel Cadmium, rechargeable (1800 mAh available) TEMPERATURE Operating: -25oC to +68oC Storage: -40oC to +85oC PHYSICAL DIMENSIONS Less Battery: 6.25" x 2.75" x 1.
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1.2 CONTROLS, INDICATORS, USER I/O This section describes the user interfaces and indicators provided by the Model 1225 Hand Held Transceiver. USER CONTROLS VOLUME Dual function rotary switch. plus volume control CHAN It is the power on/off switch The channels are A, B and R where R refers to repeater operation. CODE A two position switch allowing selection of either the common (C) or private (P) code. PTT A momentary push button switch that places the Model 1225 in the transmit mode.
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SECTION TWO OPERATION 2.0 GENERAL The ATS Model 1225 Hand Held Transceiver is one of the System 1200 devices. The System 1200 devices were designed to provide secure communications to law enforcement agencies. This section describes the operation of the Model 1225 with the other units in the System 1200 family. 2.1 ATS 1200 SYSTEM COMPONENTS The ATS System 1200 includes the Model 1245 monitor Station and the Series 1250 Transmitters. 2.
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microphone and speaker are disabled with the Surveillance Microphone/Earpiece Assembly connected. In keeping with aforementioned safety considerations, transmissions should be kept to a minimum when operating with the Microphone/Earpiece Assembly. The device should not be carried next to the body when using the microphone assembly. Body worn operation: It must be used only for monitoring purposes and ONLY with the Earpiece option. 2.
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SECTION THREE THEORY OF OPERATION 3.0 GENERAL The Model 1225 Hand Held Transceiver is a push-to-talk, spread spectrum transceiver. It uses digitized audio. The digital data stream is scrambled before modulation for security. The combination of spread spectrum modulation and scrambled, digitized audio give the Model 1225 its low probability of detection and interception characteristics. 3.1 FUNCTIONAL DESCRIPTION The Model 1225 block diagram can be divided into two sections.
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baseband data signal to recover the CVSD RX data signal. This signal is output from the FPGA to the CVSD decoder. The decoder converts this data stream to an analog audio signal. The audio output from the CVSD decoder is lowpass filtered to remove high frequency switching components. The Model 1225 has two audio amplifiers. One drives the internal speaker, while the other is used with the external speaker/microphone. A common volume control sets the gain of both amplifiers.
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Channel switching is accomplished by changing the frequency of the local oscillator that drives the TX up-converter mixer and the RX down-converter mixer. The output from the local oscillator is shared between the two mixers. The state of the CHANNEL logic signal from the FPGA causes the local oscillator to output the appropriate frequency for either Channel A or Channel B operation. 3.
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SECTION FOUR MAINTENANCE 4.0 TROUBLESHOOTING When supplied with power, the top panel PWR LED should light. If the PWR LED blinks, the battery is low and must be replaced or recharged. If the PWR LED does not illuminate at all, verify LED operation by keying the transmitter and verifying the TX indicator lights. If the TX LED does not illuminate, attach different battery pack and retry. If the LED still does not illuminate return the unit for repair.
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