Operational Description

FCC ID: NTA2WREP2

Operational Description

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FCCID_2952491

                                         Telematics Wireless Proprietary




 ALLEGRO REPEATER
            (2W Repeater)
          RF Specification
                          FCC ID: NTA2WREP2
                          IC: 4732A‐2WREP2


                           January 24, 2016


                               Rev 1.0




Commercial Confidential                                 Page 1 of 4


                                                                Telematics Wireless Proprietary




  1.   Introduction

       This document describes the RF specifications of a 2‐Way Repeater. The unit operates
       in the 450‐470 MHz band and is powered by 12V DC.
       The Repeater contains a microcontroller that provides the timing, control and data
       processing.
       The Repeater is installed on the wall or on the pillar. The unit is connected to an
       external antenna.




  2.   Block Diagram
                                                                                                   T/R
                                                                                                   switch
            32.7                                                            PA
            68k
             Hz

LED         MSP             Trans                  IF             IF        Mixer            LNA              RF
                            ceiver         amplifier          filter                                        filter


           EEPR
                             TCXO
            OM
                            40MHz                                          Synthes
                                                                           izer




  Commercial Confidential                                                         Page 2 of 4


                                                           Telematics Wireless Proprietary




3.   Electrical Performance

     The Repeater is a narrow band radio that complies with FCC Part 90
     There are 2 modes of operation

         Transmit narrow channel complies Part 90
         Receive narrow channel




3.1. Transmit Narrow Channel, complies with Part 90

                                         Narrow Channel

                 Parameter                                           Value

Transmit frequency band                        450‐470MHz*
Channel Separation                             6.25kHz
Modulation                                     4GFSK
Max Frequency deviation                        ±1.2kHz
Max Data rate                                  4.8kbps
Frequency stability (including initial         <1.0 ppm
stability, temperature)
Peak output power                              35.2dBm
Harmonics                                      < ‐62dBc

Note:*Operation limited to channels defined in 47 CFR §90.261.




Commercial Confidential                                                      Page 3 of 4


                                                          Telematics Wireless Proprietary




3.2. Receiver

                                     Receive Parameters

                  Parameter                                    Value
     Receive frequency                       Programmable in the range 450‐470MHz

     Sensitivity (BER 1E‐3)                  ‐120 dBm

     Modulation                              4GFSK

     Frequency deviation                     1.2 kHz




3.3. Antenna

    The Repeater is connected to an external antenna. The max antenna gain is 7 dBi


3.4. Power

    The unit is powered by 12VDC from charged battery or from AC‐DC power supply.




Commercial Confidential                                                    Page 4 of 4



Document Created: 2016-04-06 15:52:32
Document Modified: 2016-04-06 15:52:32

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