Test Data Part 27 Compliance

FCC ID: JF6-8702-8W

Test Report

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FCCID_589172

                                      EXHIBIT 3

2.983   Supporting Documentation
2.984   RF Power Output
2.985   Modulation Characteristics
2.986   Occupied Bandwidth
2.987   Emissions at Antenna Port
2.988   Field Strength Spurious Radiation
2.989   Frequency Stability


2.983. MDR-8000 FCC Type Acceptance


   A. Name of Manufacturer
     Alcatel USA
     3400 W. Plano Parkway
     Plano, TX 75075

   B. The equipment for which Type Acceptance is requested is referred to as the
      MDR-8X02. MDR is an abbreviation for Microwave Digital Radio. The 8 refers
      to an Alcatel product numbering scheme that implies the eighth generation of
      microwave products. The X can either be a 5 or a 7 referring to the modulation
      scheme implemented. The 5 implies a 32 Trellis Coded Modulation (TCM)
      scheme while the 7 implies 128 TCM. The last two digits imply the frequency
      band of the radio. In this case 2 GHz.

   C. The MDR-8X02 is planned to be a fully supported microwave product with sales
      exceeding the quantity of one.

   D. Technical Description
     1.
             FCC ID                Emission Designator
           JF6-8702-16               5M00D7W
           JF6-8702-12               3M75D7W
           JF6-8702-8                2M50D7W
           JF6-8702-4                1M25D7W
           JF6-8702-2                800KD7W
           JF6-8502-8                3M75D7W
           JF6-8502-4                2M50D7W
           JF6-8502-2                1M25D7W

      2. 2305 to 2360 MHz

      3. One transmit power option of +33 dBm is provided for the MDR-8X02 WCS
         radio. The power is measured at the top of the waveguide stack. For operation
         in the C and D blocks of the WCS band it was necessary to reduce the transmit
         power by 1 dB due to the increase insertion loss of the 6 MHz narrow band
         filter.

      4. The maximum rated RF power as submitted in FCC Form 731 is 2 Watts


MDR-8702-16 Private/Common Carrier Digital Radio

Radio Characteristics

FCC Identification                           JF6-8702-8
Frequency Range                              2.305-2317.6 GHz and 2347.5-2.360
GHz
RF Channel Bandwidth                         5.00 MHz
Occupied Bandwidth                           2.1768 MHz
Emission Designation                         2M50D7W
Modulation Type                              128 TCM
Data Range                                   12.62 Mb/s
Baud Rate                                    2.02 Mbaud/s
Data Efficiency                              6.25 bits/Hz
Transmit Power                               +33 dBm (2 Watts)
Transmit Frequency Stability                 0.005 % (-20 to +50 Degrees C.)
Primary Voltage Range                        24 – 48 Vdc (positive or negative)
Operating Temperature Range                  0 to 50 Degrees C


Attached Support Documents

Equipment Photograph
FCCID Label
Drawing Defining location of FCCID label
2.984 RF Power Output
2.985 Modulation Characteristics
2.986 Occupied Bandwidth
2.987 Emissions at Antenna Port
2.988 Field Strength of Spurious Radiation
2.989 Frequency Stability


2.990 RF POWER OUTPUT

       Power output is measured and set at the RF antenna port of the transmitter using
       an HP 436A Power Meter with an HP 8481 B High Power sensor.

       The transmit power is set at the desired level by adjusting the Power Amplifier
       GAIN ADJ at the front of this module. The Power Amplifier has the following
       characteristics:

       Alcatel Part Number:                  3EM 09037 ADAA

       Type Design:                          Solid State

       DC Power Requirement:                 +10.5 VDC @ 7.3A
                                             -12 VDC @ 100 mA
                                             -5 VDC @ 100 mA

       Gain:                                 25 dB typical

       Output Power:                         +33 dBm transmit power at the RF antenna




2.991 MODULATION CHARACTERISTICS

The modulation employed in this equipment is 128 and 32 TCM (Trellis Coded
Modulation). This modulation was selected to achieve good BER (bit error rate)
performance while maintaining a high spectral efficiency.

The TCM signal is similar to a QAM signal, but has been digitally encoded to allow the
receiver to correct small noise perturbations. It is generated by direct modulation of the
RF carrier and its quadrature frequency component using the I and Q baseband signals.
The I and Q baseband signals are fed a modulator IC on the RF Board. The output of the
transmit local oscillator is also fed to the modulator IC through a transformer splitter.
Each baseband signal (I and Q) is applied to a mixer inside the Modulator IC where it is
translated to RF using the In-phase and quadrature components also within the IC. The
translated I and Q spectrums are then combined within the same IC to form the
suppressed carrier RF spectrum which is subsequently fed into the linear solid state
power amplifier.


Overhead data is added to the traffic data to carry framing and service channel
information. The service channels are used to carry alarm reporting and voice orderwire
data. They also provide a channel for microprocessor communication between radio
transmitters and receivers. The receiver processor must be able to communicate with the
transmit processor for ATPC (automatic transmit power control used to reduce transmit
power when not needed) and for indicating possible transmit failure due to total loss of
receive signal.

Figure 1 shows the typical transmit spectrum characteristics of the modulated signal.




                              FIGURE 1. Typical Spectrum


2.992 OCCUPIED BANDWIDTH

    Occupied bandwidth was measured at the RF antenna port of the transmitter using
    an Agilent 4407B spectrum analyzer. This analyzer is equipped to directly
    measure the 99% power bandwidth of signal.

    8 DS1 128 TCM



Document Created: 2005-10-06 13:05:41
Document Modified: 2005-10-06 13:05:41

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