Test report

FCC ID: 2AQQS-T1810

Test Report

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FCCID_4239609

                                                                                Shenzhen CTL Testing Technology Co., Ltd.
                                                                             Tel: +86-755-89486194 E-mail: ctl@ctl-lab.com


                                                TEST REPORT
                                                            FCC Part 95

Report Reference No. ................. : CTL1903118091-WF

           Compiled by:                                          Happy Guo
( position+printed name+signature)                          (File administrators)

             Tested by:                                         Nice Nong
( position+printed name+signature)                            (Test Engineer)

           Approved by:                                           Ivan Xie
( position+printed name+signature)                               (Manager)


Product Name.............................. : Wireless Intercom Doorbell
Model/Type reference ................. : T1810
List Model(s) ................................ : WL-W1T1, LD-T1810, T1810 In door
FCC ID .......................................... : 2AQQS-T1810
Trade Mark ................................... : N/A
Applicant’s name ........................ : Shenzhen Todakj Co., Ltd.
                                            No. 40 Huan Dong Road, Tie Gang, Industrial District, Baoan,
Address of applicant .................. :
                                            Shenzhen, China
Test Firm ...................................... : Shenzhen CTL Testing Technology Co., Ltd.

                                                 Floor 1-A, Baisha Technology Park, No.3011, Shahexi Road,
Address of Test Firm .................. :
                                                 Nanshan District, Shenzhen, China 518055
Test specification ........................ :
Standard ........................................ : FCC Part 95
TRF Originator .............................. : Shenzhen CTL Testing Technology Co., Ltd.
Master TRF ................................... : Dated 2011-01
Date of receipt of test item ......... : Mar. 11, 2019
Date of sampling ......................... : Mar. 11, 2019
Date of Test Date ......................... : Mar. 11, 2019–Mar. 27, 2019
Data of Issue ................................ : Mar. 27, 2019
Result ........................................... : Pass
Shenzhen CTL Testing Technology Co., Ltd. All rights reserved.
This publication may be reproduced in whole or in part for non-commercial purposes as long as the
Shenzhen CTL Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the
material. Shenzhen CTL Testing Technology Co., Ltd. takes no responsibility for and will not assume
liability for damages resulting from the reader's interpretation of the reproduced material due to its
placement and context.


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                                        TEST REPORT
                                                                                     Mar. 27, 2019
        Test Report No. :                  CTL1903118091-WF
                                                                                     Date of issue

       Equipment under Test         :    Wireless Intercom Doorbell


       Model /Type                  :    T1810


       Listed Models                :    WL-W1T1, LD-T1810, T1810 In door


       Applicant                    :    Shenzhen Todakj Co., Ltd.


                                    :    No. 40 Huan Dong Road, Tie Gang, Industrial District, Baoan,
       Address
                                         Shenzhen, China


       Manufacturer                 :    Shenzhen Todakj Co., Ltd.


                                    :    No. 40 Huan Dong Road, Tie Gang, Industrial District, Baoan,
       Address
                                         Shenzhen, China



                         Test result                                             Pass *
       * In the configuration tested, the EUT complied with the standards specified page 5.
   The test results presented in this report relate only to the object tested.
   This report shall not be reproduced, except in full, without the written approval of the issuing testing laboratory.


V1.0                                   Page 3 of 32           Report No.: CTL1903118091-WF

                                    ** Modified History **
  Revision              Description          Issued Data      Report No.         Remark
 Version 1.0   Initial Test Report Release    2019-03-27   CTL1903118091-WF      Tracy Qi


V1.0                                                                      Page 4 of 32                                        Report No.: CTL1903118091-WF


                                                                        Table of Contents                                                                                      Page
1.     SUMMARY ...............................................................................................................................................................
     1.1.     TEST STANDARDS ........................................................................................................................................................
     1.2.     TEST DESCRIPTION ...........................................................................................................................................................
     1.3.     TEST FACILITY ..................................................................................................................................................................
     1.4.     STATEMENT OF THE MEASUREMENT UNCERTAINTY ..................................................................................................................
2.     GENERAL INFORMATION ..........................................................................................................................................
     2.1.     ENVIRONMENTAL CONDITIONS ............................................................................................................................................
     2.2.     GENERAL DESCRIPTION OF EUT..........................................................................................................................................
     2.3.     DESCRIPTION OF TEST MODES AND TEST FREQUENCY .............................................................................................................
     2.4.     MEASUREMENT INSTRUMENTS LIST ....................................................................................................................................
     2.5.     RELATED SUBMITTAL(S) / GRANT(S) ...................................................................................................................................
     2.6.     MODIFICATIONS .............................................................................................................................................................
3.     TEST CONDITIONS AND RESULTS ..............................................................................................................................
     3.1.     MAXIMUM TRANSMITTER POWER .....................................................................................................................................
     3.2.     OCCUPIED BANDWIDTH AND EMISSION MASK ......................................................................................................................
     3.3.     MODULATION CHARACTERISTIC .........................................................................................................................................
     3.4.     FREQUENCY STABILITY ......................................................................................................................................................
     3.5.     TRANSMITTER RADIATED SPURIOUS EMISSION ......................................................................................................................
4.     TEST SETUP PHOTOS OF THE EUT..............................................................................................................................
5.     EXTERNAL AND INTERNAL PHOTOS OF THE EUT .......................................................................................................


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1. SUMMARY
1.1. TEST STANDARDS
The tests were performed according to following standards:

FCC Rules Part 95 : PERSONAL RADIO SERVICES
TIA/EIA 603 D:June 2010: Land Mobile FM or PM Communications Equipment Measurement and
Performance Standards.
FCC Part 2: FREQUENCY ALLOCA-TIONS AND RADIO TREATY MAT-TERS; GENERAL RULES AND
REG-ULATIONS

1.2. Test Description
        Description of Test Item                Standard clause                  Verdict
       Maximum Transmitter Power                FCC Part 95.567                   PASS
                                                FCC Part 2.1047
        Modulation Characteristic                                                PASS
                                                FCC Part 95.575
        Occupied Bandwidth and                  FCC Part 95.573
                                                                                 PASS
             Emission Mask                      FCC Part 95.579
       Radiated Spurious Emission               FCC Part 95.579                  PASS
                                                FCC Part 2.1055
           Frequency Stability                                                   PASS
                                                FCC Part 95.565


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1.3. Test Facility
1.3.1 Address of the test laboratory
Shenzhen CTL Testing Technology Co., Ltd.
Floor 1-A, Baisha Technology Park, No. 3011, Shahexi Road, Nanshan, Shenzhen 518055 China

There is one 3m semi-anechoic chamber and two line conducted labs for final test. The Test Sites meet
the requirements in documents ANSI C63.4 and CISPR 32/EN 55032 requirements.

1.3.2 Laboratory accreditation
The test facility is recognized, certified, or accredited by the following organizations:
CNAS-Lab Code: L7497
Shenzhen CTL Testing Technology Co., Ltd. has been assessed and proved to be in compliance with
CNAS-CL01 Accreditation Criteria for Testing and Calibration Laboratories (identical to ISO/IEC 17025:
2005 General Requirements) for the Competence of Testing and Calibration Laboratories.
A2LA-Lab Cert. No. 4343.01
Shenzhen CTL Testing Technology Co., Ltd, EMC Laboratory has been accredited by A2LA for technical
competence in the field of electrical testing, and proved to be in compliance with ISO/IEC 17025: 2005
General Requirements for the Competence of Testing and Calibration Laboratories and any additional
program requirements in the identified field of testing.
IC Registration No.: 9518B
CAB identifier: CN0041
The 3m alternate test site of Shenzhen CTL Testing Technology Co., Ltd. EMC Laboratory has been
registered by Innovation, Science and Economic Development Canada to test to Canadian radio
equipment requirements with Registration No.: 9518B on Jan. 22, 2019.
FCC-Registration No.: 399832
Designation No.: CN1216
Shenzhen CTL Testing Technology Co., Ltd. EMC Laboratory has been registered and fully described in a
report filed with the (FCC) Federal Communications Commission. The acceptance letter from the FCC is
maintained in our files. Registration 399832, December 08, 2017.

1.4. Statement of the measurement uncertainty
The data and results referenced in this document are true and accurate. The reader is cautioned that
there may be errors within the calibration limits of the equipment and facilities. The measurement
uncertainty was calculated for all measurements listed in this test report acc. to CISPR 16 - 4
„Specification for radio disturbance and immunity measuring apparatus and methods – Part 4:
Uncertainty in EMC Measurements“ and is documented in the Shenzhen CTL Testing Technology Co.,
Ltd. quality system acc. to DIN EN ISO/IEC 17025. Furthermore, component and process variability of
devices similar to that tested may result in additional deviation. The manufacturer has the sole
responsibility of continued compliance of the device.
Hereafter the best measurement capability for Shenzhen CTL Testing Technology Co., Ltd. is reported
                    Test Items                             Measurement Uncertainty            Notes
Frequency error                                                     25 Hz                      (1)
Transmitter power conducted                                        0.57 dB                     (1)
Transmitter power Radiated                                         2.20 dB                     (1)
Adjacent and alternate channel power Conducted                     1.20 dB                     (1)
Conducted spurious emission 9KHz-12.75 GHz                         1.60 dB                     (1)
Radiated spurious emission 9KHz-12.75 GHz                          2.20 dB                     (1)
Intermodulation attenuation                                        1.00 dB                     (1)


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Maximum useable receiver sensitivity                           2.80 dB                  (1)
Co-channel rejection                                           2.80 dB                  (1)
Adjacent channel selectivity                                   2.80 dB                  (1)
Spurious response rejection                                    2.80 dB                  (1)
Intermodulation response rejection                             2.80 dB                  (1)
Blocking or desensitization                                    2.80 dB                  (1)
   (1) This uncertainty represents an expanded uncertainty expressed at approximately the 95%
       confidence level using a coverage factor of k=2.


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2. GENERAL INFORMATION
2.1. Environmental conditions
During the measurement the environmental conditions were within the listed ranges:
               Normal Temperature:                                         25°C
                Relative Humidity:                                         55 %
                  Air Pressure:                                           101 kPa

2.2. General Description of EUT
Name of EUT                       Wireless Intercom Doorbell
Model Number                      T1810
Power Supply                      DC 3.70V from battery
                                  Model :JHD-AP006U-050100BB-2
Adapter information               Input : AC 100-240V 50/60Hz 0.2A
                                  Output :DC 5V 1000mA
                                  Model :T1810
Charger base information          Input : DC 5V 1000mA
                                  Output :DC 4.2V 1000mA
Frequency Range                   462.5875MHz-462.7250MHz
Rate Power                        0.5W
Modulation Type                   F3E
Channel Separation                12.5KHz
Antenna Type                      Integral antenna
Antennal Gain                     2.0dBi
Note 1: For more details, please refer to the user’s manual of the EUT.

2.3. Description of Test Modes and Test Frequency


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Frequency list
             Channel                        Frequency(MHz)                          Type
                 2                             462.5875                             FRS
                 3                             462.6125                             FRS
                22                             462.7250                             FRS
Note1: In section 15.31(m), regards to the operating frequency range less than 1MHz, only one point
centered in the frequency range of operation selected to measure.
Note2: The line display in grey was the channel selected for test.
Note3: This Product only use 3 FRS channels.


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2.4. Measurement Instruments List
                                                                                Calibration   Calibration
  Test Equipment        Manufacturer         Model No.         Serial No.
                                                                                  Date        Due Date
         LISN               R&S               ENV216          3560.6550.12      2018/05/25    2019/05/24
         LISN               R&S              ESH2-Z5          860014/010        2018/05/25    2019/05/24
                       Sunol Sciences
   Bilog Antenna                                JB1             A061713         2018/05/25    2019/05/24
                           Corp.
EMI Test Receiver           R&S                 ESCI          1166.5950.03      2018/05/25    2019/05/24
Spectrum Analyzer          Agilent            E4407B          MY41440676        2018/05/25    2019/05/24
Spectrum Analyzer          Agilent             N9020          US46220290        2018/05/25    2019/05/24
       Controller      EM Electronics         EM 1000            060859         2018/05/21    2019/05/20
                       Sunol Sciences
   Horn Antenna                               DRH-118           A062013         2018/05/25    2019/05/24
                           Corp.
    Active Loop
                            Da Ze            ZN30900A               /           2018/05/25    2019/05/24
     Antenna
       Amplifier           Agilent             8449B          3008A02306        2018/05/25    2019/05/24
       Amplifier           Agilent             8447D          2944A10176        2018/05/25    2019/05/24
Temperature/Humid
                          Gangxing            CTH-608              02           2018/05/25    2019/05/24
ity Meter
High-Pass Filter        micro-tranics       HPM50108              G174          2018/05/25    2019/05/24
High-Pass Filter        micro-tranics        HPM50111             G142          2018/05/25    2019/05/24
 Climate Chamber           ESPEC              EL-10KA          A20120523        2018/05/25    2019/05/24
    SIGNAL
                           Wiltron            68347B            657OO1          2018/05/25    2019/05/24
  GENERATOR
      Radio
  Communication              HP                8920A             116250         2018/05/25    2019/05/24
      Tester
     Storage
                          Tektronix          TDS3054B           B033027         2018/10/11    2019/10/10
   Oscilloscope
                       HUBER+SUHN           SUCOFLEX                            2018/05/17    2019/05/16
  Coaxial Cables                                                  10m
                           ER              104PEA-10M
                       HUBER+SUHN           SUCOFLEX                            2018/05/17    2019/05/16
  Coaxial Cables                                                   3m
                           ER               104PEA-3M
                       HUBER+SUHN           SUCOFLEX                            2018/05/17    2019/05/16
  Coaxial Cables                                                   3m
                           ER               104PEA-3M
    RF Cable               Megalon            RF-A303              N/A          2018/05/17    2019/05/16
The calibration interval was one year


2.5. Related Submittal(s) / Grant(s)
This submittal(s) (test report) is intended to comply with FCC Part 95 Rules.


2.6. Modifications
No modifications were implemented to meet testing criteria.


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3. TEST CONDITIONS AND RESULTS
3.1. Maximum Transmitter Power
LIMITS

According to FCC Part 95.567:

Each FRS transmitter type must be designed such that the effective radiated power (ERP) on channels 8
through 14 does not exceed 0.5 Watts and the ERP on channels 1 through 7 and 15 through 22 does not
exceed 2.0 Watts.


TEST CONFIGURATION




Measurement Procedure

1. EUT was placed on a 0.8 meter high non-conductive stand at a 3 meter test distance from the receive
   antenna. A receiving antenna was placed on the antenna mast 3 meters from the EUT for emission
   measurements. The height of receiving antenna is 1.0m. Detected emissions were maximized at
   each frequency by rotating the EUT through 360° and adjusting the receiving antenna polarization.


V1.0                                      Page 12 of 32                 Report No.: CTL1903118091-WF

   The radiated emission measurements of all test transmit frequencies were measured with peak
   detector.
2. A log-periodic antenna or double-ridged waveguide horn antenna shall be substituted in place of the
   EUT. The log-periodic antenna will be driven by a signal generator and the level will be adjusted till the
   same power value on the spectrum analyzer or receiver. The level of the spurious emissions can be
   calculated through the level of the signal generator, cable loss, the gain of the substitution antenna
   and the reading of the spectrum analyzer or receiver.
3. The EUT is then put into continuously transmitting mode at its maximum power level during the
   test.Set Test Receiver or Spectrum RBW=1MHz,VBW=3MHz, And the maximum value of the receiver
   should be recorded as (Pr).
4. The EUT shall be replaced by a substitution antenna. In the chamber, an substitution antenna for the
   frequency band of interest is placed at the reference point of the chamber. An RF Signal source for
   the frequency band of interest is connected to the substitution antenna with a cable that has been
   constructed to not interfere with the radiation pattern of the antenna. A power (PMea) is applied to the
   input of the substitution antenna, and adjust the level of the signal generator output until the value of
   the receiver reach the previously recorded (Pr). The power of signal source (PMea) is recorded. The
   test should be performed by rotating the test item and adjusting the receiving antenna polarization.
5. An amplifier may be connected to the Signal Source output port. And the cable should be connect
   between the Amplifier and the Substitution Antenna. The cable loss (Pcl) ,the Substitution Antenna
   Gain (Ga) and the Amplifier Gain (PAg) should be recorded after test.
   The measurement results are obtained as described below:
   Power(EIRP)=PMea+PAg - Pcl + Ga
6. This value is EIRP since the measurement is calibrated using an antenna of known gain (2.15 dBi)
   and known input power.
7. ERP can be calculated from EIRP by subtracting the gain of the dipole, ERP = EIRP-2.15dBi.


V1.0                                     Page 13 of 32                Report No.: CTL1903118091-WF

TEST RESULTS
Remark;
The field strength of radiation emission was measured in the following position: EUT stand-up position (Z
axis), lie-down position (X, Y axis). The data show in this report only with the worst case setup. After
exploratory measurement the worst case of Z axis was reported.

                                  Ga
    Test       PMea      Pcl             Correction       PAg     ERP     ERP      Limit
                               Antenna                                                     Polarization
 Frequency    (dBm)     (dB)               (dB)          (dB)    (dBm)    (W)      (W)
                               Gain(dBi)
   (MHz)
              -10.98   2.08      7.69         2.15       34.59   27.07     0.51                 V
  462.6125                                                                           2
              -11.26   2.08      7.69         2.15       34.59   26.79     0.48                 H
Remarks
1. EIRP=PMea(dBm) +PAg(dB) -Pcl(dB) +Ga(dBi)
2. ERP = EIRP – 2.15dBi as EIRP by subtracting the gain of the dipole.


V1.0                                     Page 14 of 32               Report No.: CTL1903118091-WF


3.2. Occupied Bandwidth and Emission Mask
LIMITS

According to FCC 95.573:
Each FRS transmitter type must be designed such that the occupied bandwidth does not exceed 12.5 kHz.

According to FCC 95.579:
Each FRS transmitter type must be designed to satisfy the applicable unwanted emissions limits in this
paragraph.
(a) Attenuation requirements. The power of unwanted emissions must be attenuated below the carrier
power output in Watts (P) by at least:
(1) 25 dB (decibels) in the frequency band 6.25 kHz to 12.5 kHz removed from the channel center
frequency.
(2) 35 dB in the frequency band 12.5 kHz to 31.25 kHz removed from the channel center frequency.
(3) 43 + 10 log (P) dB in any frequency band removed from the channel center frequency by more than
31.25 kHz.
(b) Measurement bandwidths. The power of unwanted emissions in the frequency bands specified in
paragraphs (a)(1) and (2) of this section is measured with a reference bandwidth of 300 Hz. The power of
unwanted emissions in the frequency range specified in paragraph (a)(3) is measured with a reference
bandwidth of at least 30 kHz.
(c) Measurement conditions. The requirements in this section apply to each FRS transmitter type both
with and without the connection of permitted attachments, such as an external speaker, microphone
and/or power cord.

TEST CONFIGURATION




TEST PROCEDURE

1   The EUT was modulated by 2.5 KHz Sine wave audio signal; the level of the audio signal employed is
    16 dB greater than that necessary to produce 50% of rated system deviation. Rated system deviation
    is 2.5 kHz (12.5 kHz channel spacing) and 5 kHz (25 kHz channel spacing).
2   Set SPA Center Frequency = fundamental frequency, RBW=300Hz, VBW= 3 KHz, span =50 KHz.
3   Set SPA Max hold. Mark peak, Set 99% Occupied Bandwidth and 26dB Occupied Bandwidth.


V1.0                         Page 15 of 32               Report No.: CTL1903118091-WF

TEST RESULTS

Occupied Bandwidth:

                           99% OBW             26dB             Limit
  Modulation     Channel     (kHz)           bandwidth         (KHz)          Result
                                               (kHz)
       F3E        CH3       7.510              7.883            12.5           Pass




Emission Mask:


V1.0                                    Page 16 of 32                Report No.: CTL1903118091-WF


3.3. Modulation Limit
LIMITS

FCC Part 95.575, FCC Part 2.1047(b) Each FRS transmitter type must be designed such that the peak
frequency deviation does not exceed 2.5 kHz, and the highest audio frequency contributing substantially
to modulation must not exceed 3.125 kHz.

TEST PROCEDURE

Modulation Limit
1) Connect the equipment as illustrated.
2) Adjust the transmitter per the manufacturer's procedure for full rated system deviation.
3) Set the test receiver to measure peak positive deviation. Set the audio bandwidth for ≤0.25 Hz to
≥15,000 Hz. Turn the de-emphasis function off.
4) Apply Input Modulation Signal to EUT according to Section 3.4 and vary the input level from –20 to
+20dB.
5) Measure both the instantaneous and steady-state deviation at and after the time of increasing the
audio input level
6) Repeat step 4-5 with input frequency changing to 300Hz, 1004Hz, 1500Hz and 2500Hz in sequence

TEST CONFIGURATION




TEST RESULTS

                       Peak Freq.         Peak Freq.           Peak Freq.          Peak Freq.
   Modulation
                     Deviation At 300   Deviation At 1004    Deviation At 1500   Deviation At 2500
   Level(dB)
                        Hz(KHz)             Hz(KHz)              Hz(KHz)             Hz(KHz)
       -20                0.09                 0.19                 0.27                0.42
       -15                0.10                 0.30                 0.45                0.67
       -10                0.19                 0.49                 0.75                1.20
        -5                0.30                 0.85                 1.34                1.78
        0                 0.49                 1.51                 1.86               1.91
       +5                 0.73                 1.84                 1.94                1.90
       +10                0.79                 1.83                 1.95                1.90
       +15                0.80                 1.85                 1.98                1.91
       +20                0.86                 1.85                 1.99                1.91


V1.0   Page 17 of 32   Report No.: CTL1903118091-WF


V1.0                                    Page 18 of 32                Report No.: CTL1903118091-WF


3.4. Audio Frequency Response
LIMIT

FCC Part 95.575),FCC Part 2.1047(a): Each FRS transmitter type must be designed such that the peak
frequency deviation does not exceed 2.5 kHz, and the highest audio frequency contributing substantially
to modulation must not exceed 3.125 kHz. Voice modulated communication equipment. A curve or
equivalent data showing the frequency response of the audio modulating circuit over a range of 100 to
5000 Hz shall be submitted.




An additional 6 dB per octave attenuation is allowed from 2500 Hz to 3000 Hz in equipment operating in
the 25 MHz to 869 MHz range.


V1.0                                      Page 19 of 32                Report No.: CTL1903118091-WF

TEST CONFIGURATION




TEST PROCEDURE

1) Connect the equipment as illustrated.
2) Set the test receiver to measure peak positive deviation. Set the audio bandwidth for 50 Hz to 15,000
Hz. Turn the de-emphasis function off.
3) Set the DMM to measure rms voltage.
4) Adjust the transmitter per the manufacturer's procedure for full rated system deviation.
5) Apply Input Modulation Signal to EUT according to Section 3.4
6) Set the test receiver to measure rms deviation and record the deviation reading.
7) Record the DMM reading as VREF .
8) Set the audio frequency generator to the desired test frequency between 300 Hz and 3000 Hz.
9) Vary the audio frequency generator output level until the deviation reading that was recorded in step 6)
is obtained.
10) Record the DMM reading as VFREQ
11) Calculate the audio frequency response at the present frequency as: audio frequency
response=20log10 (VFREQ/VREF).
12) Repeat steps 8) through 11) for all the desired test frequencies

       Frequency    Frequency Deviation          1KHz Reference               Audio Frequency
         (KHz )           (KHz)                     Deviation                    Response
                                                     (KHz)                           (dB)
          0.1               0.06                      0.52                         -18.70
          0.2               0.05                      0.52                         -20.94
          0.3               0.09                      0.52                         -15.11
          0.4               0.14                      0.52                         -11.25
          0.5               0.18                      0.52                          -9.19
          0.6               0.27                      0.52                          -5.40
          0.7               0.34                      0.52                          -3.49
          0.8               0.38                      0.52                          -2.53
          0.9               0.40                      0.52                          -2.14
          1.0               0.51                      0.52                           0.00
          1.2               0.59                      0.52                           1.29
          1.4               0.69                      0.52                           2.62
          1.6               0.76                      0.52                           3.44
          1.8               0.91                      0.52                           5.05
          2.0               0.95                      0.52                           5.41
          2.2               1.03                      0.52                           6.16
          2.4               1.16                      0.52                           7.15
          2.6               1.21                      0.52                           7.52
          2.7               1.23                      0.52                           7.64
          2.8               1.36                      0.52                           8.50
          3.0               1.29                      0.52                           8.09
          3.5               0.05                      0.52                         -20.13
          4.0               0.05                      0.52                         -20.13
          4.5               0.05                      0.52                         -20.13


V1.0                                Page 20 of 32           Report No.: CTL1903118091-WF

       5.0               0.05                   0.52                   -20.13


                            Audio Frequency Response for 12.5KHz

             15
             10
              5
              0
                                                                       Test Datum
             -5
        dB




                                                                       6dB/Oct+1
             -10                                                       6dB/Oct-3

             -15
             -20
             -25
                   0.1                  1                     10
                                       KHz


V1.0                                     Page 21 of 32               Report No.: CTL1903118091-WF


3.5. Frequency Stability
LIMITS

According to FCC 95.565
FCC Part 95.565: Each FRS transmitter type must be designed such that the carrier frequencies remain
within ±2.5 parts-per- million of the channel center frequencies specified in §95.563 during normal
operating conditions.

TEST CONFIGURATION




TEST PROCEDURE

The EUT was set in the climate chamber and connected to an external DC power supply. The RF output
was directly connected to Spectrum Analyzer. The coupling loss of the additional cables was recorded
and taken in account for all the measurements. After temperature stabilization (approx. 20 min for each
stage), the frequency for the lower, the middle and the highest frequency range was recorded. For
Frequency stability Vs. Voltage the EUT was connected to a DC power supply and the voltage was
adjusted in the required ranges. The result was recorded.


V1.0                                Page 22 of 32            Report No.: CTL1903118091-WF

TEST RESULTS

                              Reference Frequency: 462.6125MHz
                                  Frequency error      Frequency drift       Limit
Voltage ( V )   Temperature (℃)                                                       Result
                                       (Hz)                (ppm)            (ppm)

                      -30              1043                 2.25
                      -20              984                  2.13
                      -10              750                  1.62
                      0                694                  1.50
       3.70           10               449                  0.97
                      20               332                  0.72             ±2.5     Pass
                      30               420                  0.91
                      40               621                  1.34
                      50               1036                 2.24
       4.26           25               942                  2.04
       3.15           25               899                  1.94


V1.0                                     Page 23 of 32               Report No.: CTL1903118091-WF


3.6. Transmitter Radiated Spurious Emission
Limit

The unwanted emission should be attenuated below TP by at least 43+10log(Transmit Power) dB and
unwanted emissions falling within the restricted bands of RSS-Gen shall be attenuated to the limits
provided in this section or to the general field strength limits shown in RSS-Gen, whichever are less
stringent.


TEST CONFIGURATION


V1.0                                        Page 24 of 32                 Report No.: CTL1903118091-WF

TEST PROCEDURE

a. EUT was placed on a 0.8 meter high non-conductive stand at a 3 meter test distance from the receive
     antenna. A receiving antenna was placed on the antenna mast 3 meters from the EUT for emission
     measurements. The height of receiving antenna is 1.0m. Detected emissions were maximized at
     each frequency by rotating the EUT through 360° and adjusting the receiving antenna polarization.
     The radiated emission measurements of all test transmit frequencies were measured with peak
     detector.
b. A log-periodic antenna or double-ridged waveguide horn antenna shall be substituted in place of the
     EUT. The log-periodic antenna will be driven by a signal generator and the level will be adjusted till the
     same power value on the spectrum analyzer or receiver. The level of the spurious emissions can be
     calculated through the level of the signal generator, cable loss, the gain of the substitution antenna
     and the reading of the spectrum analyzer or receiver.
c. The EUT is then put into continuously transmitting mode at its maximum power level during the test.
     Set Test Receiver or Spectrum 100 kHz below 1GHz and 1MHz above 1GHz, Sweep from 30MHz to
     the 10th harmonic of the fundamental frequency; and recorded the level of the concerned spurious
     emission point as (Pr).
d. The EUT then replaced by a substitution antenna. In the chamber, an substitution antenna for the
     frequency band of interest is placed at the reference point of the chamber. An RF Signal source for
     the frequency band of interest is connected to the substitution antenna with a cable that has been
     constructed to not interfere with the radiation pattern of the antenna. A power (PMea) is applied to the
     input of the substitution antenna, and adjust the level of the signal generator output until the value of
     the receiver reach the previously recorded (Pr). The power of signal source (PMea) is recorded. The
     test should be performed by rotating the test item and adjusting the receiving antenna polarization.
     The measurement results are obtained as described below:

                                         Power (EIRP)=PMea - Pcl + Ga
   Where;
     PMea is the recorded signal generator level
     Pcl     is the cable loss connect between instruments
     Ga      Substitution Antenna Gain
e. This value is EIRP since the measurement is calibrated using an antenna of known gain (2.15 dBi)
     and known input power.
f.   ERP can be calculated from EIRP by subtracting the gain of the dipole, ERP = EIRP -2.15dBi.
g. Test site anechoic chamber refer to ANSI C63.


           Level (dBmim}
       0




           30     50           100             200            500           1000           2000            6000
                                                      Frequency (MHz)




Mark       Frequency       Level      Factor     Reading    Limit       Margin     Det.     Polarization
              fiie       dBn.          as          dBn       as          as
 i          sas.76     ~23. 5o        5.66       —30.25    —13.00       10.59       Peak     HORIZONTAL
 2         2310.98     ~as.16        —3.62       ~a4.54    —13.00       35.16      Peak      HORTZONTAL
 3         2775 .62    —45.81        —2.02       ~43,79    —13.00       32.01.—    Peak      HORTZONTAL
 4         3239.66     ~47.79         0. 41      ~48.20    —13.00       34. 79—    Peak      HORTZONTAL
 s         s700.35     ~a7.85         2.30       ~50.24    —13.00       34.06      Peak      HORTZONTAL
 s         ares.24     —34.85         3.38       —38.23    —13.00       21.05      Peak      HORIZONTAL
 7         4632.17     ~45.84         4. 30      ~80. 14   —13.00       32.84      Peak      HORTZONTAL
 s         5094. 97    ~as.94         5.75       ~54.69.   —13.00       35.94      Peak      HORTZONTAL
 o         ssss. s     ~57.02         5.06       —e3.08    —13.00       44.02      Peak      HORIZONTAL


                      Level (dBmim}                                                        Date: 2019—03—26 Time: 16:48:27
                  0




                      30     50           100            200           500           1000            2000             6000
                                                               Frequency (MHz)




  Mark                Frequency       Level     Factor     Reading    limit      Margin       Det.    Polarization
                         mtz        dBn.          as         dBn       as         as
                       sas. 76    ~30.32         5.52      —36.84    —13.00      17.32       Peak      VERTICAL
6 a a o n e o n




                      2310. 98    ~a4.59        —3.62      ~a0.97    —13.00      31.59        Peak     VERTICAL
                      275. o2     ~a4.04        —2.02      ~a2.02    —13.00      31.04       Peak      VERTICAL
                      3239. 66    ~47.26         0. 41     ~47.67    —13.00      34.26       Peak      VERTICAL
                      s700. 35    —allra         2.38      —a4.12    —13.00      20.74       Peak      VERTICAL
                      arss.24     —36.99         3.38      ~40.37    —13.00      23.99       Peak      VERTICAL
                      4632. 17    ~52. 48        4. 30     —56.78    —13.00      39. 48—     Peak      VERTICAL
                      5094. 97    ~a5.27         5.75      —s1.02    —13.00      32.27       Peak      VERTICAL
                      ssss. a9    ~54.01         5.06      ~e0.07    —13.00      41.01       Peak      VERTICAL


V1.0                     Page 27 of 32   Report No.: CTL1903118091-WF

4. Test Setup Photos of the EUT


V1.0                      Page 28 of 32           Report No.: CTL1903118091-WF

5. External and Internal Photos of the EUT

                         External Photos of EUT


V1.0   Page 29 of 32   Report No.: CTL1903118091-WF


V1.0   Page 30 of 32   Report No.: CTL1903118091-WF


V1.0         Page 31 of 32           Report No.: CTL1903118091-WF

            Internal Photos of EUT




  Antenna


V1.0                     Page 32 of 32               Report No.: CTL1903118091-WF




       ********************** End of Report **********************



Document Created: 2019-04-08 11:40:03
Document Modified: 2019-04-08 11:40:03

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