FCC Part 90 Test Report

FCC ID: 2ADAKSFFR6V2

Test Report

Download: PDF

                                                   Test Report
                                              Prepared for: Etherstack

                                                   Model: SFFR6V2

                                      Description: Small Form Factor Repeater

                                              Serial Number: 17050006

                                              FCC ID: 2ADAKSFFR6V2
                                                IC: 9487A-SFFR6V2

                                                          To

                                               FCC Part 22, 74, 80, 90

                                                          and

                                                IC RSS-119 (Issue 12)

                                          Date of Issue: February 12, 2019


On the behalf of the applicant:            Etherstack Inc.
                                           1115 Broadway
                                           Suite 1276
                                           New York, NY 10010

Attention of:                              Doug Chapman, V.P. Business Development N.A.
                                           Ph: (917)661-4110
                                           E-Mail: doug.chapman@etherstack.com


                                                   Prepared By
                                             Compliance Testing, LLC
                                                1724 S. Nevada Way
                                                  Mesa, AZ 85204
                                     (480) 926-3100 phone / (480) 926-3598 fax
                                            www.compliancetesting.com
                                               Project No: p1780009




                                                                         Greg Corbin
                                                                         Project Test Engineer


         This report may not be reproduced, except in full, without written permission from Compliance Testing.
                              All results contained herein relate only to the sample tested.




                                                                                       p1780009_FCC_Part 90_Rev 9.0
                                                                                                       Page 1 of 26


                                     Test Report Revision History

Revision   Date                Revised By    Reason for Revision

  1.0      October 16, 2017    Greg Corbin   Original Document
                                             Corrected attenuator value on page 13.
                                             Added Table 2 on page 7 listing FCC test frequencies used.
  2.0      November 28, 2017   Greg Corbin   Added power limits to page 9.
                                             Added ppm specification to page 21.
                                             Added ANSI C63.26 reference to page 6.
                                             Updated Model and Description, manufacturer address.
                                             Added emission designators 8K10F7D, 8K10F7E, 8K10F1W,
                                             8K10F7W.
                                             Removed emission designator 20k0F3E.
                                             Updated test modulation description on pages
  3.0      December 17, 2017   Greg Corbin
                                             11,13,14,16,18,20.
                                             Updated the following test data, emission masks, occupied
                                             bandwidth, audio low pass filter, audio frequency response,
                                             modulation limiting, updated frequency stability limit and
                                             added frequency stability for DC voltage
                                             Updated FCC and IC IDs, Removed all references to internal
  4.0         June 8, 2018     Greg Corbin
                                             duplexer and associated losses, Updated Output power tables
                                             Added 8K10F1E to page 6,
                                             Updated notes on pages 11, 12.
                                             Corrected label for graph on page 8 in Annex B,
                                             Updated channel bandwidth for C4FM in table on page 13
                                             Updated FM narrowband and FM wideband plots in Annex D
  5.0        June 21, 2018     Greg Corbin   Removed 8K10F1E from necessary BW calculation page 24
                                             Added 8K10F1E,8K10F1W, 8K10F7D, 8K10F7E, 8K10F7W to
                                             necessary BW calculations
                                             Added audio source to test setup on page 11 and 14.
                                             Replaced repeater with basestation
                                             Replaced channel spacing with channel bandwidth
                                             Changed description back to Small Form Factor Repeater
  6.0       October 2, 2018    Greg Corbin
                                             Added Part 74 frequencies to Table 1 page 6.
  7.0       October 25, 2018   Greg Corbin   Added emission designators to table 1 on page 7.

  8.0       January 18, 2019   Greg Corbin   Updated extended frequencies in Table 1.
                                             Removed the extended frequency range for the 16K0F3E
  9.0      February 11, 2019   Greg Corbin
                                             emission from Table 1 on page 7.




                                                                             p1780009_FCC_Part 90_Rev 9.0
                                                                                             Page 2 of 26


                                                            Table of Contents

Description                                                                                                                                  Page

 Standard Test Conditions and Engineering Practices ........................................................................ 6
 Test Result Summary .......................................................................................................................... 9
 Conducted Output Power .................................................................................................................. 10
 Conducted Spurious Emissions ........................................................................................................ 12
 Radiated Spurious Emissions ........................................................................................................... 13
 Emission Masks ................................................................................................................................ 14
 Occupied Bandwidth ......................................................................................................................... 15
 Transient Frequency Behavior .......................................................................................................... 16
 Audio Low Pass Filter (Voice Input) .................................................................................................. 17
 Audio Frequency Response .............................................................................................................. 18
 Modulation Limiting ........................................................................................................................... 19
 Frequency Stability (Temperature Variation) .................................................................................... 21
 Frequency Stability (Voltage Variation) ............................................................................................. 23
 Necessary Bandwidth Calculations ................................................................................................... 25
 Test Equipment Utilized .................................................................................................................... 26




                                                                                                                  p1780009_FCC_Part 90_Rev 9.0
                                                                                                                                  Page 3 of 26


                                                         ILAC / A2LA

Compliance Testing, LLC, has been accredited in accordance with the recognized International Standard ISO/IEC
17025:2005. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory
quality management system (refer to the joint ISO-ILAC-IAF Communiqué dated January 2009).

The tests results contained within this test report all fall within our scope of accreditation, unless noted below.

Please refer to http://www.compliancetesting.com/labscope.html for current scope of accreditation.

Testing Certificate Number: 2152.01




FCC Site Reg. #349717

IC Site Reg. #2044A-2


       Non-accredited tests contained in this report:

       N/A




                                                                                             p1780009_FCC_Part 90_Rev 9.0
                                                                                                             Page 4 of 26


                                 The Applicant has been cautioned as to the following:

15.21: Information to the User

The user’s manual or instruction manual for an intentional radiator shall caution the user that changes or modifications not
expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.


15.27(a): Special Accessories

Equipment marketed to a consumer must be capable of complying with the necessary regulations in the configuration in
which the equipment is marketed. Where special accessories, such as shielded cables and/or special connectors are
required to enable an unintentional or intentional radiator to comply with the emission limits in this part, the equipment
must be marketed with, i.e. shipped and sold with, those special accessories. However, in lieu of shipping or packaging
the special accessories with the unintentional or intentional radiator, the responsible party may employ other methods of
ensuring that the special accessories are provided to the consumer, without an additional charge.

Information detailing any alternative method used to supply the special accessories for a grant of equipment authorization
or retained in the verification records, as appropriate. The party responsible for the equipment, as detailed in § 2.909 of
this chapter, shall ensure that these special accessories are provided with the equipment. The instruction manual for such
devices shall include appropriate instructions on the first page of text concerned with the installation of the device that
these special accessories must be used with the device. It is the responsibility of the user to use the needed special
accessories supplied with the equipment.




                                                                                          p1780009_FCC_Part 90_Rev 9.0
                                                                                                          Page 5 of 26


Test and Measurement Data

All tests and measurement data shown were performed in accordance with FCC Rules and Regulations, Volume II, Part
2, Subpart J, Sections 2.947, 2.1033(c), 2.1041, 2.1046, 2.1047, 2.1049, 2.1051, 2.1053, 2.1055, 2.1057, and the
following individual Parts: FCC Part 22, 80, 90, and ANSI C63.26.


Standard Test Conditions and Engineering Practices

Except as noted herein, the following conditions and procedures were observed during the testing.

In accordance with ANSI/TIA 603E, and unless otherwise indicated in the specific measurement results, the ambient
temperature of the actual EUT was maintained within the range of 10° to 40°C (50° to 104°F) unless the particular
equipment requirements specified testing over a different temperature range. Also, unless otherwise indicated, the
humidity levels were in the range of 10% to 90% relative humidity.



                                               Environmental Conditions
                            Temp                       Humidity                      Pressure
                             (ºC)                        (%)                          (mbar)
                          26.3 – 30.0                 33.6 – 46.2                  963.8 – 965.3



Measurement results, unless otherwise noted, are worst-case measurements.


EUT Description
Model: SFFR6V2
Description: Small Form Factor Repeater
Firmware: 2.04.000
Software: N/A
Serial Number: 17060006
Additional Information:
The EUT is a VHF small form factor repeater operating from 136 – 174 MHz per Table 1 below.

The EUT is AC or DC powered, with 2 battery packs for battery power.


EUT Operation during Tests
Throughout the test report, there are references to narrowband, wideband, and digital signals.
Narrowband (NB) utilizes analog FM test signals with 12.5 kHz channel bandwidth.
Wideband (WB) utilizes analog FM test signals with 25 kHz channel bandwidth.
Digital utilizes C4FM test signals.




                                                                                        p1780009_FCC_Part 90_Rev 9.0
                                                                                                        Page 6 of 26


                                          Table 1 - Frequency Allocation

                                          Frequency Range (136 – 174 MHz)
          Frequency                                                       Extended
 Rule                                 Sub-Bands
            Range                                                         Frequency               Emission Designators
 Part                                   (MHz)
            (MHz)                                                           (MHz)
                                                                                               8K10F1D, 8K10F1E, 8K10F1W,
FCC        150.8 –     150.8 –   157.1875    161.775 –   162.0375       136 –     173.4 -
                                                                                               8K10F7D, 8K10F7E, 8K10F7W,
Part 90     173.4     156.2475   – 161.575   161.9625     – 173.4       150.8      174
                                                                                                        11K0F3E
                                                                                               8K10F1D, 8K10F1E, 8K10F1W,
FCC        150.8 –
                        150.8 – 152.885        157.45 – 161.775         N/A         N/A        8K10F7D, 8K10F7E, 8K10F7W,
Part 22    161.775
                                                                                                    11K0F3E, 16K0F3E

                                                                             Per the
                                                                       attestation letter,
                                                                         any frequency
                      152.8625                                                                 8K10F1D, 8K10F1E, 8K10F1W,
FCC       150.885 –              160.860 -   161.625 -    166.25 ,          within the
                          -                                                                    8K10F7D, 8K10F7E, 8K10F7W,
Part 74     173.2                 161.400     161.775      170.15      frequency range
                      153.3575                                                                      11K0F3E, 16K0F3E
                                                                       that is not listed
                                                                        in the sub-band
                                                                             section

                                                                                               8K10F1D, 8K10F1E, 8K10F1W,
FCC         154 –
                         154 – 161.625        161.775 – 162.0375        N/A         N/A        8K10F7D, 8K10F7E, 8K10F7W,
Part 80   162.02375
                                                                                                    11K0F3E, 16K0F3E
                                                                                               8K10F1D, 8K10F1E, 8K10F1W,
RSS                    138 –      148 –
          138 - 174                               150.05 - 174          N/A         N/A        8K10F7D, 8K10F7E, 8K10F7W,
119                     144       148.9
                                                                                                    11K0F3E, 16K0F3E




                                     Table 2 - FCC and IC Test Frequencies
                                  Test Frequency
                                                            FCC and IC Rule Part
                                       (MHz)
                                     138.0125                           RSS-119

                                     150.8125                        22, 90, RSS-119

                                     161.5625                     22, 80, 90, RSS-119

                                     173.3875                         90, RSS-119




                                                                                             p1780009_FCC_Part 90_Rev 9.0
                                                                                                             Page 7 of 26


          Accessories:

    Qty   Description           Manufacturer                   Model                  S/N

1         Audio breakout box    Etherstack                      N/A                   N/A



          Cables:
                                    Length     Shielding   Shielded Hood
Qty       Description                                                            Termination
                                      (M)         Y/N           Y/N
1         AC Power cord                1          N             N                    N/A

1         DC Power cord                1          N             N                    N/A



          Modifications: None




                                                                           p1780009_FCC_Part 90_Rev 9.0
                                                                                           Page 8 of 26


Test Result Summary

                                                                     Pass,
    Specification     Test Name                                                 Comments
                                                                    Fail, N/A
    2.1046
    RSS-119 (5.4)
                      Conducted Output Power                         Pass
    22.565 (a)
    80.215 (f)(g)
    2.1051
    RSS-119 (5.8)
                      Conducted Spurious Emissions                   Pass
    22.359 (a)
    80.211 (f)
    2.1053
    Rss-119 (5.8)
                      Radiated Spurious Emissions                    Pass
    22.359 (a)
    80.211 (f)
    90.210
    2.1049
                      Emission Masks                                 Pass
    RSS-119 (5.5)
    80.211 (f)
    2.1049            Occupied Bandwidth                             Pass
    2.1047            Audio Low Pass Filter (Voice Input)            Pass
    2.1047            Audio Frequency Response                       Pass
    2.1047(a)         Modulation Limiting                            Pass
    90.213
    RSS-119 (5.3)
                      Frequency Stability (Temperature Variation)    Pass
    22.355
    80.209 (a)(5)
    90.213
    RSS-119 (5.3)
                      Frequency Stability (Voltage Variation)        Pass
    22.355
    80.209 (a)(5)
    90.214
                      Transient Frequency Behavior                   Pass
    RSS-119 (5.9)
    2.202 (g)         Necessary Bandwidth Calculation                Pass




                                                                            p1780009_FCC_Part 90_Rev 9.0
                                                                                            Page 9 of 26


Conducted Output Power
Engineer: Greg Corbin
Test Date: 8/28/17


                                                Measurement Procedure

The Equipment Under Test (EUT) was connected to a spectrum analyzer through a 30 dB Power attenuator. All cable and
attenuator losses were input into the spectrum analyzer as a reference level offset to ensure accurate readings were
obtained.
For narrowband and wideband signals a CW signal and peak detector was used for performing output power
measurements.
For digital signals a C4FM signal and average detector was used for performing output power measurements
Output power was recorded for both the lowest and highest power setting

The output power limits are as follows for each FCC rule part.

Part 22: 22.565(a)_150 watts

Part 80: 80.215(a)_50 watts

Part 90: 90.205 (d) 150-174 MHz. (1) The maximum allowable station ERP is dependent upon the station's antenna HAAT
and required service area and will be authorized in accordance with table 1 in part 90.205(a).

                                                       Test Setup


                              EUT                          30 dB                   Spectrum
                                                         Attenuator                Analyzer

                                Peak Output Power – Narrowband - Low Power setting
                    Tuned Frequency                  Measured Output Power
                                                                                         Result
                         (MHz)                       (dBm)               (watts)
                        138.0125                      32.4                1.738           Pass
                        150.8125                      32.4                1.738           Pass
                        161.5625                      32.4                1.738           Pass
                        173.3875                      32.5                1.778           Pass

                                Peak Output Power – Narrowband - High power setting
                    Tuned Frequency                  Measured Output Power
                                                                                         Result
                         (MHz)                       (dBm)               (watts)
                        138.0125                      44.2                26.303          Pass
                        150.8125                      44.2                26.303          Pass
                        161.5625                      44.2                26.303          Pass
                        173.3875                      44.3                26.915          Pass




                                                                                    p1780009_FCC_Part 90_Rev 9.0
                                                                                                   Page 10 of 26


          Peak Output Power – Wideband - Low Power setting
Tuned Frequency               Measured Output Power
                                                                     Result
     (MHz)                    (dBm)                  (watts)
   138.0125                    32.4                  1.738            Pass
   150.8125                    32.4                  1.738            Pass
   161.5625                    32.4                  1.738            Pass
   173.3875                    32.5                  1.778            Pass

          Peak Output Power – Wideband - High power setting
Tuned Frequency               Measured Output Power
                                                                     Result
     (MHz)                    (dBm)                  (watts)
   138.0125                    44.2                  26.303           Pass
   150.8125                    44.2                  26.303           Pass
   161.5625                    44.2                  26.303           Pass
   173.3875                    44.3                  26.915           Pass


              Peak Output Power – Digital - Low Power setting
Tuned Frequency               Measured Output Power
                                                                     Result
     (MHz)                    (dBm)                  (watts)
   138.0125                    32.4                  1.738            Pass
   150.8125                    32.4                  1.738            Pass
   161.5625                    32.4                  1.738            Pass
   173.3875                    32.5                  1.778            Pass

              Peak Output Power – Digital - High power setting
Tuned Frequency               Measured Output Power
                                                                     Result
     (MHz)                    (dBm)                  (watts)
   138.0125                    44.2                  26.303           Pass
   150.8125                    44.2                  26.303           Pass
   161.5625                    44.2                  26.303           Pass
   173.3875                    44.3                  26.915           Pass




                                                                 p1780009_FCC_Part 90_Rev 9.0
                                                                                Page 11 of 26


Conducted Spurious Emissions
Engineer: Greg Corbin
Test Date: 9/5/17

                                                     Test Procedure

The EUT was connected directly to a spectrum analyzer to verify that the UUT met the requirements for spurious
emissions. A tunable notch filter was utilized to ensure the fundamental did not put the spectrum analyzer into
compression. The resolution bandwidth set for 100 kHz and the reference level was adjusted to ensure the system had
sufficient dynamic range to measure spurious emissions. The frequency range from 30 MHz to the 10th harmonic of the
fundamental transmitter was observed and plotted

The EUT was tested in 3 modes of operation, Wideband (WB), Narrowband (NB), and Digital.
The high power output was used for all conducted spurious tests.
For analog modulation, a 2.5 kHz tone was used, set to 50% modulation (NB 50% of 2.5 kHz = 1.125 kHz, WB 50% of 5
kHz is 2.5 kHz).
The input level was then set to 16 dB above the level used for 50 % modulation.

For digital modulation, the EUT internal C4FM modulation was used.


                                                       Test Setup


                                                           Tunable Notch               Spectrum
     Signal Generator                  EUT                     Filter                  Analyzer




Refer to Annex A for Conducted Spurious Emission test data.


Notes:
The limit line on the graphs is set to -13dBm.
The test limit for 25 kHz channels is -13dBm.
The test limit is for 12.5 kHz channels is -20dBm.
All spurious measurements were below -20 dBm.




                                                                                     p1780009_FCC_Part 90_Rev 9.0
                                                                                                    Page 12 of 26


Radiated Spurious Emissions
Engineer: Greg Corbin
Test Date: 9/6/2017

                                                      Test Procedure

The EUT was tested in a semi-anechoic chamber with the turntable set 3m from the receiving antenna. A spectrum
analyzer was used to verify that the EUT met the requirements for Radiated Emissions. The EUT was tested by rotating it
360 degrees with the antenna in both the vertical and horizontal orientation while raised from 1 to 4 meters to ensure that
the signal levels were maximized. All cable and antenna correction factors were input into the spectrum analyzer ensuring
an accurate measurement in ERP/EIRP with the resultant power in dBm. A signal generator was used to provide a
modulated signal as required. The EUT output was terminated into a 50 Ohm non-radiating load.

The RBW was set to 100 kHz for measurements below 1 GHz and 1 MHz for measurements above 1 GHz.
The VBW was set to 3 times the RBW.

The following formula was used for calculating the limits:

Radiated Spurious Emissions Limit
Wideband = P1 – (43+ 10Log(P2)) = -13dBm
Narrowband = P1 – (50+ 10Log(P2)) = -20dBm
P1 = power in dBm
P2 = power in Watts

                                                           Test Setup


                    Signal                                                                       Spectrum
                                                EUT                     Antenna
                   Generator                                                                     Analyzer




                                          50-Ohm non-
                                          radiating load




Refer to Annex B for the Radiated Spurious Emissions test data.

Notes:
The limit line on the graphs is set to -13dBm.
The test limit for 25 kHz channels is -13dBm.
The test limit is for 12.5 kHz channels is -20dBm.
All spurious measurements were below -20 dBm.
No other emissions were detected.




                                                                                         p1780009_FCC_Part 90_Rev 9.0
                                                                                                        Page 13 of 26


Emission Masks
Engineer: Greg Corbin
Test Date: 8/29/2017


                                                 Test Procedure

The EUT was connected directly to a spectrum analyzer to verify that the EUT meets the required emissions mask.
A reference level plot is provided to verify that the peak power was established prior to testing the mask.
The modulation settings are listed in the table below.
For analog modulation, a 2.5 kHz tone was used, set to 50% modulation (NB 50% of 2.5 kHz = 1.125 kHz, WB 50% of 5
kHz is 2.5 kHz).
The input level was then set to 16 dB above the level used for 50 % modulation.
For digital modulation, the EUT internal C4FM modulation was used.


      Channel                       Emission
                        Emission                     Type of       Audio Frequency       Deviation       RBW
     Bandwidth                      Bandwidth
                         Mask                       Modulation          (kHz)              (kHz)         (Hz)
       (kHz)
          25                B          16k0             FM                    2.5           50%           300

         12.5               D          11k0             FM                    2.5           50%           100

         12.5               D          8k10            C4FM               N/A               N/A           100




                                                    Test Setup




                 Signal                                                                     Spectrum
                                          EUT                    Attenuator
                Generator                                                                   Analyzer




Refer to Annex C for Emission Mask test data.




                                                                                    p1780009_FCC_Part 90_Rev 9.0
                                                                                                   Page 14 of 26


Occupied Bandwidth
Engineer: Greg Corbin
Test Date: 8/28/17


                                                   Test Procedure

The EUT was connected directly to a spectrum analyzer. The Span was set wide enough to capture the entire transmit
spectrum and the resolution bandwidth was set to at least 1% of the span. The Occupied Bandwidth tool on the spectrum
analyzer was used to measure the -26 dB (99%) occupied bandwidth.
For analog modulation, a 2.5 kHz tone was used, set to 50% modulation.
The input level was then set to 16 dB above the level used for 50 % modulation.
For digital modulation, the EUT internal C4FM modulation was used.




                                                     Test Setup




                Signal                      EUT                     Spectrum
               Generator                                            Analyzer




Refer to Annex D for Occupied Bandwidth test data.




                                                                                     p1780009_FCC_Part 90_Rev 9.0
                                                                                                    Page 15 of 26


Transient Frequency Behavior
Engineer: Greg Corbin
Test Date: 8/29/2017


                                              Measurement Procedure

The EUT was connected directly to a modulation analyzer through a 30 dB attenuator to verify that the EUT meets the
required Transient Frequency Behavior response per the specification. The modulation analyzer is a real time spectrum
analyzer with integrated demodulation, audio measurement capabilities, and timing analysis.
The turn on and turn off transient timing was measured and recorded.



                                                      Test Setup


                                                          30 dB                        Modulation
                           EUT
                                                                                        Analyzer
                                                        Attenuator




Refer to Annex E for Transient Frequency Behaviour test data.




                                                                                      p1780009_FCC_Part 90_Rev 9.0
                                                                                                     Page 16 of 26


Audio Low Pass Filter (Voice Input)
Engineer: Greg Corbin
Test Date: 12/11/2017

                                                             Measurement Procedure

The EUT was connected directly to a modulation analyzer through an attenuator.
Set the audio frequency generator to 1 kHz and adjust the level per manufacturer's specifications.
The audio source was tuned from 100 Hz to 20 kHz and the audio frequency response was measured and plotted.
The modulation analyzer is a real time spectrum analyzer with integrated demodulation, audio measurement capabilities,
and timing analysis.
The Audio Low Pass Filter test data was recorded for 12.5 kHz and 25 kHz channel bandwidth.

                                                                          Test Setup


                                                                                                                              Modulation
      Audio Source                                      EUT                              40 dB Attenuator
                                                                                                                               Analyzer


                                                                          Test Results

                                                          12.5 kHz Channel Bandwidth
                                                      Audio Low Pass Filter Response


                                     20.00
             Filter Response (dB)




                                     10.00
                                      0.00
                                    -10.00
                                    -20.00
                                    -30.00
                                    -40.00
                                    -50.00
                                    -60.00
                                    -70.00
                                    -80.00
                                                                                                10000.00
                                                                1000.00




                                                                                                                         100000.00
                                             100.00




                                                              Audio Input Frequency (Hz)



                                                           25 kHz Channel Bandwidth
                                                      Audio Low Pass Filter Response


                                     20.00
             Filter Response (dB)




                                     10.00
                                      0.00
                                    -10.00
                                    -20.00
                                    -30.00
                                    -40.00
                                    -50.00
                                    -60.00
                                    -70.00
                                    -80.00
                                                                                                10000.00
                                                                1000.00




                                                                                                                         100000.00
                                             100.00




                                                              Audio Input Frequency (Hz)




                                                                                                            p1780009_FCC_Part 90_Rev 9.0
                                                                                                                           Page 17 of 26


Audio Frequency Response
Engineer: Greg Corbin
Test Date: 12/11/2017
                                                             Measurement Procedure

The EUT was connected directly to a modulation analyzer through an attenuator.
The audio frequency was set to 1 kHz and the level was adjusted for 20% deviation according to the manufacturer's
instructions.
The audio source was tuned from 100 Hz to 5000 Hz and the audio frequency response was measured and plotted.
The modulation analyzer is a real time spectrum analyzer with integrated demodulation, audio measurement capabilities,
and timing analysis.
The Audio Frequency Response test data was recorded for 12.5 kHz and 25 kHz channel bandwidth.

                                                                   Test Setup


                                                                                                                          Modulation
      Audio Source                                     EUT                         40 dB Attenuator
                                                                                                                           Analyzer


                                                                  Test Results

                                                        12.5 kHz Channel Bandwidth
                                                       Audio Frequency Response
              Frequency Response (dB)




                                         15.00
                                         10.00
                                          5.00
                                          0.00
                                         -5.00
                                        -10.00
                                        -15.00
                                        -20.00
                                        -25.00
                                        -30.00
                                        -35.00



                                                                                                                  10000
                                                                            1000
                                                 100




                                                              Audio Input Frequency (Hz)



                                                         25 kHz Channel Bandwidth
                                                       Audio Frequency Response


                                         15.00
              Frequency Response (dB)




                                         10.00
                                          5.00
                                          0.00
                                         -5.00
                                        -10.00
                                        -15.00
                                        -20.00
                                        -25.00
                                        -30.00
                                        -35.00
                                        -40.00
                                                                                                                  10000
                                                                            1000
                                                 100




                                                              Audio Input Frequency (Hz)




                                                                                                      p1780009_FCC_Part 90_Rev 9.0
                                                                                                                     Page 18 of 26


Modulation Limiting
Engineer: Greg Corbin
Test Date: 12/11/2017

                                                               Measurement Procedure

The EUT was connected directly to a modulation analyzer through an attenuator.
The audio frequency was set to 1 kHz and the level was adjusted for 60% deviation according to the manufacturer's
instructions. The input level was then set to 16 dB above the level used for 50 % modulation.
The audio source was tuned from 100 Hz to 5000 Hz and the audio frequency response was measured and plotted.
The modulation analyzer is a real time spectrum analyzer with integrated demodulation, audio measurement capabilities,
and timing analysis.
The Modulation Limiting test data was recorded for 12.5 kHz and 25 kHz channel bandwidth.

                                                                       Test Setup


                                                                                                                    Modulation
     Audio Source                                        EUT                              Attenuator
                                                                                                                     Analyzer


                                                           Narrowband Positive Peaks
                                                               Positive Peak Deviation (kHz)


                                            2.50
                          Deviation (KHz)




                                            2.00
                                            1.50
                                            1.00
                                            0.50
                                            0.00
                                                                                 1000
                                                   100




                                                                                                           10000


                                                                    Audio Input Frequency (Hz)



                                                           Narrowband Negative Peaks
                                                               Negative Peak Deviation (kHz)


                                            2.50
                                            2.00
                         Deviation (KHz)




                                            1.50
                                            1.00
                                            0.50
                                            0.00
                                                                                 1000
                                                   100




                                                                                                           10000




                                                                    Audio Input Frequency (Hz)




                                                                                                       p1780009_FCC_Part 90_Rev 9.0
                                                                                                                      Page 19 of 26


                               Wideband Positive Peaks
                               Positive Peak Deviation (kHz)


                  4.50
Deviation (KHz)   4.00
                  3.50
                  3.00
                  2.50
                  2.00
                  1.50
                  1.00
                  0.50
                  0.00




                                                 1000
                         100




                                                                     10000
                                    Audio Input Frequency (Hz)




                               Wideband Negative Peaks
                               Negative Peak Deviation (kHz)


                  4.50
                  4.00
Deviation (KHz)




                  3.50
                  3.00
                  2.50
                  2.00
                  1.50
                  1.00
                  0.50
                  0.00
                                                 1000
                         100




                                                                     10000



                                    Audio Input Frequency (Hz)




                                                                 p1780009_FCC_Part 90_Rev 9.0
                                                                                Page 20 of 26


Frequency Stability (Temperature Variation)
Engineer: Greg Corbin
Test Date: 12/17/2017

                                                               Measurement Procedure

The EUT was placed in an environmental test chamber and the RF output was connected directly to a spectrum analyzer.
The temperature was varied from -30°C to 50°C in 10°C increments. After a sufficient time for temperature stabilization
the RF output frequency was measured. At 20°C the power supply voltage to the EUT was varied from 85% to 115% of
the nominal value and the RF output was measured.
Tests were performed for both 120 VAC and +12 VDC supply voltages.

                                                                Measurement Setup


                                                                                                         Frequency
                                      EUT                            Attenuation
                                                                                                          Counter



                                                                Measurement Results

                                                  Frequency Stability vs. Temperature _120 VAC

   Tuned                    Frequency                            Measured                                              Upper       Lower
                                            Temperature                            Upper Limit    Lower Limit
 Frequency                  Tolerance                           Frequency                                             Margin       Margin
                                            (centigrade)                             (MHz)          (MHz)
   (MHz)                      (PPM)                               (MHz)                                                (MHz)        (MHz)
  150.8125                      1.0                -30          150.812517         150.812651         150.812349     -0.000134    0.000168
  150.8125                      1.0                -20          150.812523         150.812651         150.812349     -0.000128    0.000174
  150.8125                      1.0                -10          150.812495         150.812651         150.812349     -0.000156    0.000146
  150.8125                     1.0                  0           150.812457         150.812651         150.812349     -0.000194    0.000108
  150.8125                     1.0                 10           150.812465         150.812651         150.812349     -0.000186    0.000116
  150.8125                     1.0                 20           150.812468         150.812651         150.812349     -0.000183    0.000119
  150.8125                     1.0                 30           150.812448         150.812651         150.812349     -0.000203    0.000099
  150.8125                     1.0                 40           150.812439         150.812651         150.812349     -0.000212    0.000090
  150.8125                     1.0                 50           150.812438         150.812651         150.812349     -0.000213    0.000089



                                            Frequency Stability vs. Temperature _120 VAC
                         150.812700
                         150.812650
       Frequency (MHz)




                                                                                                                         Upper Limit
                         150.812600
                         150.812550
                         150.812500                                                                                      Measured
                         150.812450                                                                                      Frequency
                         150.812400
                         150.812350                                                                                      Lower Limit
                         150.812300
                                      -40   -30    -20   -10     0    10     20     30    40     50     60   70
                                                         Temperature (Centigrade)




                                                                                                          p1780009_FCC_Part 90_Rev 9.0
                                                                                                                         Page 21 of 26


                                               Frequency Stability vs. Temperature_+ 12 VDC

  Tuned                    Frequency                         Measured                                         Upper       Lower
                                           Temperature                        Upper Limit    Lower Limit
Frequency                  Tolerance                        Frequency                                        Margin       Margin
                                            centigrade                          (MHz)          (MHz)
  (MHz)                      (PPM)                            (MHz)                                           (MHz)        (MHz)
 150.8125                      1.0              -30         150.812507        150.812651     150.812349     -0.000144    0.000158
 150.8125                      1.0              -20         150.812497        150.812651     150.812349     -0.000154    0.000148
 150.8125                      1.0              -10         150.812490        150.812651     150.812349     -0.000161    0.000141
 150.8125                      1.0               0          150.812473        150.812651     150.812349     -0.000178    0.000124
150.8125                       1.0              10          150.812457        150.812651     150.812349     -0.000194    0.000108
150.8125                       1.0              20          150.812461        150.812651     150.812349     -0.000190    0.000112
150.8125                       1.0              30          150.812448        150.812651     150.812349     -0.000203    0.000099
150.8125                       1.0              40          150.812437        150.812651     150.812349     -0.000214    0.000088
150.8125                       1.0              50          150.812432        150.812651     150.812349     -0.000219    0.000083




                                          Frequency Stability vs. Temperature_+ 12 VDC
                      150.812700
    Frequency (MHz)




                      150.812650
                                                                                                                 Upper Limit
                      150.812600
                      150.812550
                      150.812500                                                                                 Measured
                      150.812450                                                                                 Frequency
                      150.812400
                      150.812350                                                                                 Lower Limit
                      150.812300
                                   -40   -30   -20    -10   0   10       20    30    40     50   60    70
                                                      Temperature (Centigrade)




                                                                                                 p1780009_FCC_Part 90_Rev 9.0
                                                                                                                Page 22 of 26


Frequency Stability (Voltage Variation)
Engineer: Greg Corbin
Test Date: 12/17/2017

The EUT was placed in an environmental test chamber and the RF output was connected directly to a spectrum analyzer.
At 20°C the power supply voltage to the EUT was varied from 85% to 115% of the nominal value and the RF output was
measured.
Tests were performed for both 120 VAC and +12 VDC supply voltages.




                                               Frequency Stability vs. Voltage_120 VAC

  Tuned                   Frequency                                                       Measured      Upper         Lower
                                       Upper Limit    Lower Limit   Nominal   Measured
Frequency                 Tolerance                                                      Frequency     Margin         Margin
                                         (MHz)          (MHz)       Voltage    Voltage
  (MHz)                     (PPM)                                                          (MHz)        (MHz)          (MHz)
 150.8125                     1.0      150.812651     150.812349    120.00     102.00    150.812460   -0.000191      0.000111
 150.8125                     1.0      150.812651     150.812349    120.00     120.00    150.812468   -0.000183      0.000119
 150.8125                     1.0      150.812651     150.812349    120.00     138.00    150.812456   -0.000195      0.000107




                                           Frequency Stability vs. Voltage_120 VAC
                     150.812700
                     150.812650                                                                        Upper Limit
                     150.812600
   Frequency (MHz)




                     150.812550
                     150.812500                                                                        Measured
                                                                                                       Frequency
                     150.812450
                     150.812400
                                                                                                       Lower Limit
                     150.812350
                     150.812300
                              100.00         110.00           120.00          130.00         140.00
                                                        Voltage




                                                                                           p1780009_FCC_Part 90_Rev 9.0
                                                                                                          Page 23 of 26


                                                  Frequency Stability vs. Voltage_+12 VDC

  Tuned                 Frequency                                                                Measured         Upper       Lower
                                    Upper Limit        Lower Limit   Nominal     Measured
Frequency               Tolerance                                                               Frequency        Margin       Margin
                                      (MHz)              (MHz)       Voltage      Voltage
  (MHz)                   (PPM)                                                                   (MHz)           (MHz)        (MHz)
 150.8125                   1.0         150.812651     150.812349     12.00           10.20     150.812461      -0.000190    0.000112
 150.8125                   1.0         150.812651     150.812349     12.00           12.00     150.812461      -0.000190    0.000112
 150.8125                   1.0         150.812651     150.812349     12.00           13.80     150.812461      -0.000190    0.000112




                                            Frequency Stability vs. Voltage_+12 VDC
                       150.812700
                       150.812650                                                                                    Upper Limit
     Frequency (MHz)




                       150.812600
                       150.812550
                       150.812500                                                                                    Measured
                                                                                                                     Frequency
                       150.812450
                       150.812400
                                                                                                                     Lower Limit
                       150.812350
                       150.812300
                                10.10     10.60     11.10   11.60 12.10       12.60     13.10   13.60   14.10
                                                             Voltage




                                                                                                  p1780009_FCC_Part 90_Rev 9.0
                                                                                                                 Page 24 of 26


Necessary Bandwidth Calculations
Engineer: Greg Corbin
Test Date: 10/10/2017




                        Modulation = 11K0F3E

                 Necessary Bandwidth Calculation:

          Maximum Modulation (M), kHz                        =         3

          Maximum Deviation (D), kHz                         =        2.5

          Constant Factor (K)                                =         1

          Necessary Bandwidth (BN), kHz                      =   (2xM)+(2xDxK)

                                                             =        11.0



                        Modulation = 16K0F3E

                 Necessary Bandwidth Calculation:

          Maximum Modulation (M) kHz                         =         3

          Maximum Deviation (D), kHz                         =         5

          Constant Factor (K)                                =         1

          Necessary Bandwidth (BN), kHz                      =   (2xM)+(2xDxK)

                                                             =        16.0



                          Modulation =
      8K10F1E, 8K10F1W, 8K10F7D, 8K10F7E, 8K10F7W, 8K10F1D

                  Necessary Bandwidth Calculation:

           Data Rate (R) Kbps                                =        9.6

           Maximum Deviation (D), kHz                        =       3.111

           Signaling States                                  =         4

           Constant Factor (K)                               =       0.531

           Necessary Bandwidth (BN), kHz                     =   (R/log2S)+2DK

                                                             =        8.1




                                                                 p1780009_FCC_Part 90_Rev 9.0
                                                                                Page 25 of 26


Test Equipment Utilized

                                                                                                   Last Cal      Cal Due
      Description               Manufacturer                 Model #              CT Asset #
                                                                                                    Date          Date
     Horn Antenna                    ARA                    DRG-118/A               i00271         6/16/16       6/16/18
 Humidity / Temp Meter             Newport                  IBTHX-W-5               i00282          6/9/17        6/9/18
    Bi-Log Antenna                Schaffner                 CBL 6111D               i00349          8/3/16        8/3/18
     EMI Analyzer                  Agilent                    E7405A                i00379         2/22/17       2/22/18
    Signal Generator          Rohde & Schwarz               SMU200A                 i00405          5/5/17        5/5/18
   Spectrum Analyzer              Textronix                 RSA5126A                i00424          5/3/17        5/3/18
3 Meter Semi-Anechoic                                 3 Meter Semi-Anechoic
                                 Panashield                                         i00428         8/15/16       8/15/19
      Chamber                                               Chamber
    Signal Generator               Agilent                   E4438C                 i00457         10/19/16      10/19/18
Preamplifier for 1-18GHz                              AFS44 00101 400 23-
                                    Miteq                                           i00509           N/A           N/A
     horn antenna                                           10P-44

In addition to the above listed equipment standard RF connectors and cables were utilized in the testing of the described
equipment. Prior to testing these components were tested to verify proper operation.




END OF TEST REPORT




                                                                                         p1780009_FCC_Part 90_Rev 9.0
                                                                                                        Page 26 of 26



Document Created: 2019-05-13 21:55:37
Document Modified: 2019-05-13 21:55:37

© 2019 FCC.report
This site is not affiliated with or endorsed by the FCC