Test Report

FCC ID: BY35058-49P

Test Report

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FCCID_3003162

INTERTEK TESTING SERVICES

GENERAL INFORMATION

SCIENTIFIC TOYS LTD.
Model: BY35058-49P
FCC ID: BY35058-49P

Grantee: SCIENTIFIC TOYS LTD.
Grantee Address: Rm. 1108, 11/F., Block B, New Mandarin Plaza 14
Science Museum Road, TST East Kowloon, Hong Kong
Contact Person: Muk Shui Leung
Tel: 852-25573202
Manufacturer: SCIENTIFIC TOYS LTD.
Manufacturer Address: Rm. 1108, 11/F., Block B, New Mandarin Plaza 14
Science Museum Road, TST East Kowloon, Hong Kong
Model: BY35058-49P
Type of EUT: Superregenerative Receiver
Description of EUT: R/C VEHICLE
Serial Number: N/A
FCC ID : BY35058-49P
Date of Sample Submitted: May 5, 2016
Date of Test: May 24, 2016
Report No.: SZHH01053981-001
Report Date: May 25, 2016
Environmental Conidtions: Temperature: +10 to 40°C
Humidity: 10 to 90%

Report No.: SZHH01053981-001
FCC ID: BY35058-49P
TRF No.: FCC 15C_RX_b

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INTERTEK TESTING SERVICES

Table of Contents

1.0 General Description ............................................................................................... 1
1.1 Product Description ............................................................................................ 1
1.2 Related Submittal(s) Grants ............................................................................... 3
1.3 Test Methodology............................................................................................... 3
1.4 Test Facility ........................................................................................................ 3

2.0 System Test Configuration .................................................................................... 3
2.2 EUT Exercising Software ................................................................................... 3
2.3 Special Accessories ........................................................................................... 4
2.4 Equipment Modification ...................................................................................... 4
2.5 Support Equipment List and Description ............................................................ 4

3.0 Emission Results ................................................................................................... 5
3.1 Field Strength Calculation .................................................................................. 5
3.2 Radiated Emission Configuration Photograph.................................................... 6
3.3 Radiated Emission Data ..................................................................................... 6

4.0 Equipment Photographs ........................................................................................ 8

5.0 Product Labelling ................................................................................................... 8

6.0 Technical Specifications ........................................................................................ 8

7.0 Instruction Manual ................................................................................................. 8

8.0 Miscellaneous Information ..................................................................................... 8
8.1 Stabilization Waveform ...................................................................................... 9
8.2 Discussion of Pulse Desensitization................................................................... 9
8.3 Calculation of Average Factor ............................................................................ 9
8.4 Emissions Test Procedures ............................................................................. 10
8.4 Emissions Test Procedures (cont'd) ................................................................. 11

9.0 Equipment List .................................................................................................... 11

Report No.: SZHH01053981-001
FCC ID: BY35058-49P
TRF No.: FCC 15C_RX_b

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INTERTEK TESTING SERVICES

1.0 General Description

1.1 Product Description

The equipment under test (EUT) is a receiver for R/C VEHICLE operating at
49.860 MHz. The EUT is powered by dc 9.0V size AA 6 x 1.5V batteries.

The Models: 97200, 97201, 97202, 97203, 97204, 97205, 97206, 97207,
97208, 97209, 97210, 97211-97216, 97217, 97218, 97219, 99910, 99917,
90101, 90102, 90103, 90104, 90105, 90106, 90107, 90108, 90109, 90110,
23810, 23811, 23812, 23813, 23814, 23815, 23816, 23817, 23818, 23819,
23820, 23821, 23822, 23823, 23830, 23800-23830, 23340, 23341, 23342,
23343, 23344, 23345, 21860, 21861, 21862, 21863, 21864, 21865, 21866,
21867, 21868, 21869, 21870, 21871, 21872, 21873, 21874, 21875, 21876,
21877, 21878, 21879, 21880, 21881, 21882, 21883, 21884, 21885, 21886,
21887, 21888, 21889, 21890, 21891, 21892, 21893, 21894, 21895, 21896,
21897, 21898, 21899, 21900, 24046, 90100, 90101, 90102, 90103, 90104,
90105, 90106, 90107, 90108, 90109, 90110, 23810, 23811, 23812, 23813,
23814, 23815, 23816, 23817, 23818, 23819, 23820, 23821, 23822, 23823,
23830, 23800-23830, 24017, 24018, 24019, 24020, 24021, 24022, 24023,
24043, 24000-24050, 22102, 22103, 22100-22120, 21110, 21111, 21112,
21113, 21114, 21115, 21116, 21117, 21118, 21119, 21120, 21121-21129,
21130, 21131-21139, 21140, 21141-21146, 21147, 21148, 21149, 21150,
97200, 97201, 97207, 97210, 97220, 97230, 97240, 97202-97250, 21860,
21861, 21862, 21863, 21864, 21865, 21866, 21867, 21868, 21869, 21870,
21871, 21872, 21873, 21874, 21875, 21876, 21877, 21878, 21879, 21880,
21881, 21882, 21883, 21884, 21885, 21886, 21887, 21888, 21889, 21890,
21891, 21892, 21893, 21894, 21895, 21896, 21897, 21898, 21899, 21900,
95551, 95552, 95553, 95554, 95555, 95556, 95557, 95558, 95559, 95550-
95560, 99910, 99917, 98790, 99663, 99660, 98781, 95263, 95267, 95268,
95551, 95555, 95559, 95167, 21627, 21634, 99843, 99840, 99870, 21060,
21070, 21080, 99668, 99658, 99659, 33360, 33340, 33341, 33342, 33344,
33348, 33343-33360, 33361,33362, 33363, 33364, 33365, 33366, 33367,
33368, 33369, 33370, 33371-33399, 33400, 23340, 23345, 23341-23350,
63340, 27014, 27500, 27501, 27502, 27503, 27504, 27505, 27506, 27507,
27508, 27509, 27510, 27511, 27512, 27513, 27514, 27515, 27516, 27517,
27518, 27519, 27520, 27521, 27522-27529, 27530, 27531, 27532-27539,
27540, 27541, 27542-27549, 27550, 27551, 27552-27559, 27560, 27561,
27562-27569, 27570, 27571, 27572-27579, 27580, 27581, 27582-27589,
27590, 27591, 27592-27599, 27800, 27801, 27802, 27803, 27804, 27805,
27806, 27807, 27808, 27809, 27810, 27811-27819, 28720, 27821-27829,
27830, 27831-27839, 27840, 27841-24849, 27850, 27851-27869, 27860,
27861-27869, 27870, 27871-27879, 27880, 27881-27889, 27890, 27891-
27899, 27900, 98122, 98120, 98122, 98121-98129, 98130-98139, 98132,
99670, 99671-99679, 91460-91479, 91480, 91481, 91482, 91483-91489,
91586, 97128, 97126, 97120, 97121, 97122, 97123, 97124, 97125, 97127,
97129, 97130, 97131-97139, 97140, 97141-97149, 97150, 20028,
20001,20006, 99647, 99640-99649, 95527, 95520-95529, 97136, 97135,
97128, 97138, 97118, 97121, 97130, 97131, 97132, 97133, 97134, 97135,

Report No.: SZHH01053981-001
FCC ID: BY35058-49P
TRF No.: FCC 15C_RX_b
1

INTERTEK TESTING SERVICES

97136, 97137, 97138, 97139, 97140, 97141, 97142, 97143, 97144, 97145,
97146, 97147, 97148, 97149, 97150, 94500, 94501, 94507, 29100, 30760,
31680-31689, 21902, 21907, 21959, 21975, 21977, 93817, 21446, 21448,
21440, 21442, 21416, 21437, 21438, 32100-32109, 32107, 32108, 30756,
30753, 21005, 21007, 21000-21010, 27717, 29982, 27723, 27415, 27410,
27411-27419, 27420, 27421, 27422, 27423, 27424-27429, 27430, 24600,
24601-24609, 24610, 24611-24619, 24620, 24621, 24622, 24623, 24624,
24625, 24626, 24627, 24628, 24629, 24630, 24631, 24632, 24633, 24634,
24635, 24636, 24637, 24639, 24640, 24641, 24642, 26658, 24643, 24644-
24649, 24650, 24651, 24652-24657, 24658, 27410, 27420, 99480, 99470,
24644, 24645, 24646, 24600-24660, 24550, 99420, 24700, 24701, 24702,
24703, 24704, 24705- 24730, 22920, 22921-22940, 98790, 99597, 99840,
99870, 99660, 28000, 28001-28019, 28020, 28021, 28022, 28023, 28024,
28025, 28026, 28027, 28028, 28029, 28030, 28031, 28032, 28033, 28034,
28035, 28036, 28037, 28038, 28039, 28040, 28041-28049, 28050, 28051-
28099, 95166, 95167, 95730, 95734, 95737, 95731-95740, 99457, 99467,
98867, 98877, 98857-98897, 21700, 21702, 21701-21730, 21917, 21930,
21931, 21932, 21933, 21934, 21935, 21936, 21937, 21938, 21940, 21900-
21970, 99037, 99497, 99498, 95030, 95031-95039, 20017, 20010, 20001,
20002, 20003, 20005, 20006, 20007, 20008, 20009, 20010, 20011-20015.
20016, 20024, 20018- 20050, 24900, 24901-24909, 24910, 24911-24919,
24920, 24921, 24922, 24923, 24924, 24925, 24926, 24927, 24928, 24929,
24930, 24931-24950, 21917, 21857, 21897, 25919, 25929, 25939, 25969,
99900, 99901-99909, 99910, 99911-99919, 99920, 99921, 99922, 99923,
99924, 99925, 99926, 99927, 99928, 99929, 99930, 99931, 99932, 99933-
99939, 99037, 99877, 24930, 20017, 99079, 99096, 99097, 99098, 99099,
97038, 97128, 97138, 21867, 22837, 99497, 99347, 97200, 97207, TE129,
TE128, 21868, 21869, 21870, 21871, 21872, 21873, 21874, 21875, 21876,
21877, 21878, 21879, 21880, 21881, 21882, 21883, 21884,. 21885, 21886,
21887, 21888, 21889, 21890, 21891, 21850- 21899, 99900, 99902, 99901-
99909, 99910, 99911-99919, 99917, 99927, 99928, 99920-99929, 99937,
99930-99937, 99947, 99940-99949, 99957, 99950-99959, 99967, 99960-
99969, 99977, 99970-99979, 99987, 99980-99989, 99997, 99990-99999,
99070, 99071-99076, 99072, 99077, 99078, 99079, 99080, 99081, 99082-
99089, 99090, 99096, 99097, 99098, 99099, 99080-99095, 93817, 21959,
21975, 21978, 21446, 21121, 21124, 21129, 21120-21130, 21425, 21424,
21815, 21820, 21821, 21822-21850, 21465, 27000, 27001, 27002, 27003,
27004, 27005, 27006, 27007, 27008, 27009, 27010, 27011, 27012, 27013,
27014, 27015, 27016, 27017, 27018, 27019, 27020, 27021, 27022, 27023,
27024, 27025, 27026, 27027, 27028, 27028, 27030, 27031-27100, 99750,
99751-99780, 97000, 97001-97009, 97010, 97011-97030 are different with
Model: BY35058-49P in appearance and model number for marketing
purpose only, all the electrical parts are the same.

Antenna Type: Integral Antenna

For electronic filing, the brief circuit description is saved with filename: descri.pdf.

Report No.: SZHH01053981-001
FCC ID: BY35058-49P
TRF No.: FCC 15C_RX_b
2

INTERTEK TESTING SERVICES

1.2 Related Submittal(s) Grants

This is an application for certification of a receiver for the R/C VEHICLE, and
there has a transmitter which associated with this EUT, has FCC ID:
BY32837-49TP and has been granted.

1.3 Test Methodology
Radiated emission measurements were performed according to the
procedures in ANSI C63.4 (2009). Radiated Emission measurement was
performed in a Semi-anechoic chamber. Preliminary scans were performed
in the Semi-anechoic chamber only to determine worst case modes. For
each scan, the procedure for maximizing emissions in Appendices D and E
were followed. All Radiated tests were performed at an antenna to EUT
distance of 3 meters, unless stated otherwise in the "Justification Section"
of this Application.

1.4 Test Facility

The Semi-anechoic chamber facility used to collect the radiated data is Intertek
Testing Services Shenzhen Ltd. Kejiyuan Branch and located at 6F, D Block,
Huahan Building, Langshan Road, Nanshan District, Shenzhen, P. R. China.
This test facility and site measurement data have been fully placed on file with
the FCC (Registration Number: 242492).

2.0 System Test Configuration

2.1 Justification

The system was configured for testing in a typical fashion (as a customer would
normally use it), and in the confines as outlined in ANSI C63.4 (2009).

The EUT was powered by six new 1.5V size AA batteries during test.

For maximizing emissions, the EUT was rotated through 360°, the antenna
height was varied from 1 meter to 4 meters above the ground plane, and the
antenna polarization was changed. This step by step procedure for maximizing
emissions led to the data reported in Exhibit 3.0.

The unit was operated standalone and placed in the center of the turntable.

The equipment under test (EUT) was configured for testing in a typical fashion
(as a customer would normally use it). The EUT was mounted to a plastic stand
if necessary and placed on the wooden turntable, which enabled the engineer to
maximize emissions through its placement in the three orthogonal axes.

2.2 EUT Exercising Software

There was no special software to exercise the device. Once the unit is
powered up, it receives the RF signal continuously.

Report No.: SZHH01053981-001
FCC ID: BY35058-49P
TRF No.: FCC 15C_RX_b
3

INTERTEK TESTING SERVICES

2.3 Special Accessories
There are no special accessories necessary for compliance of this product.

2.4 Equipment Modification

Any modifications installed previous to testing by SCIENTIFIC TOYS LTD. will
be incorporated in each production model sold/leased in the United States.

No modifications were installed by Intertek Testing Services Shenzhen Ltd.

2.5 Measurement Uncertainty
When determining of the test conclusion, the Measurement Uncertainty of test
has been considered.

2.6 Support Equipment List and Description
N/A.

Report No.: SZHH01053981-001
FCC ID: BY35058-49P
TRF No.: FCC 15C_RX_b
4

INTERTEK TESTING SERVICES

3.0 Emission Results

Data is included of the worst case configuration (the configuration which resulted
in the highest emission levels). A sample calculation, configuration photographs
and data tables of the emissions are included.

3.1 Field Strength Calculation

The field strength is calculated by adding the Antenna Factor and Cable Factor,
and subtracting the Amplifier Gain (if any), Average Factor (optional) from the
measured reading. The basic equation with a sample calculation is as follows:
FS = RA + AF + CF - AG - AV
where FS = Field Strength in dBµV/m
RA = Receiver Amplitude (including preamplifier) in dBµV
CF = Cable Attenuation Factor in dB
AF = Antenna Factor in dB
AG = Amplifier Gain in dB
AV = Average Factor in dB

In the following table(s), the reading shown on the data table reflects the preamplifier
gain. An example for the calculations in the following table is as follows:
FS = RR + LF
where FS = Field Strength in dBµV/m
RR = RA - AG - AV in dBµV
LF = CF + AF in dB

Assume a receiver reading of 52.0 dBµV is obtained. The antenna factor of
7.4 dB and cable factor of 1.6 dB are added. The amplifier gain of 29 dB and
average factor of 5 dB are subtracted, giving a field strength of 27 dBµV/m.
This value in dBµV/m was converted to its corresponding level in µV/m.

RA = 52.0 dBµV/m
AF = 7.4 dB RR = 18.0 dBµV
CF = 1.6 dB LF = 9.0 dB
AG = 29.0 dB
AV = 5.0 dB
FS = RR + LF
FS = 18 + 9 = 27 dBµV/m
Level in µV/m = Common Antilogarithm [(27 dBµV/m)/20] = 22.4 µV/m

Report No.: SZHH01053981-001
FCC ID: BY35058-49P
TRF No.: FCC 15C_RX_b
5

INTERTEK TESTING SERVICES

3.2 Radiated Emission Configuration Photograph

Worst Case Radiated Emission at 50.280 MHz

For electronic filing, the worst case radiated emission configuration photographs
are saved with filename: radiated photos.pdf.

3.3 Radiated Emission Data

The data on the following page lists the significant emission frequencies, the
limit and the margin of compliance. Numbers with a minus sign are below the
limit.

Judgment: Passed by 2.6 dB

Report No.: SZHH01053981-001
FCC ID: BY35058-49P
TRF No.: FCC 15C_RX_b
6

INTERTEK TESTING SERVICES

Applicant: SCIENTIFIC TOYS LTD.
Date of Test: May 24, 2016
Model: BY35058-49P
Test Mode: Receive
Table 1

Radiated Emissions

Pre- Antenna Net Limit
Frequency Reading amp Factor at 3m at 3m Margin
Polarization (MHz) (dBµV) (dB) (dB) (dBµV/m ) (dBµV/m) (dB)
V 49.680 36.2 20 11.0 27.2 40.0 -12.8
V 50.080 45.8 20 11.0 36.8 40.0 -3.2
V 50.280 46.4 20 11.0 37.4 40.0 -2.6
V 50.480 44.6 20 11.0 35.6 40.0 -4.4
V 50.680 39.4 20 11.0 30.4 40.0 -9.6
V 50.880 34.0 20 11.0 25.0 40.0 -15.0

NOTES: 1. Peak Detector Data unless otherwise stated.

2. All measurements were made at 3 meters. Harmonic emissions not
detected at the 3-meter distances were measured at 0.3-meter and an
inverse proportional extrapolation was performed to compare the signal
level to the 3-meter limit. No other harmonic emissions than those
reported were detected at a test distance of 0.3-meter.

3. Negative sign in the column shows value below limit.

Report No.: SZHH01053981-001
FCC ID: BY35058-49P
TRF No.: FCC 15C_RX_b
7

INTERTEK TESTING SERVICES

4.0 Equipment Photographs

For electronic filing, the photographs are saved with filename: external photos.pdf
and internal photos.pdf.

5.0 Product Labelling

For electronics filing, the FCC ID label artwork and the label location are saved
with filename: label.pdf.

6.0 Technical Specifications

For electronic filing, the block diagram and schematic of the tested EUT are
saved with filename: block.pdf and circuit.pdf respectively.

7.0 Instruction Manual

For electronic filing, a preliminary copy of the Instruction Manual is saved with
filename: manual.pdf.

This manual will be provided to the end-user with each unit sold/leased in the
United States.

8.0 Miscellaneous Information

The miscellaneous information includes details of the test procedure.

This miscellaneous information includes details of the stabilizing process
(including a plot of the stabilized waveform), the test procedure and calculation
of the factors such as pulse desensitization and averaging factor.

Report No.: SZHH01053981-001
FCC ID: BY35058-49P
TRF No.: FCC 15C_RX_b
8

Document Created: 2016-05-25 12:57:04
Document Modified: 2016-05-25 12:57:04

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