Test Report

FCC ID: BRWSTX3

Test Report

Download: PDF

FCCID_4226851

TEST REPORT
Reference No. .................... : WTF19S01005314W V1

FCC ID ................................ : BRWSTX3

Applicant ............................ : Horizon Hobby, LLC

Address .............................. : 2904 Research Rd. Champaign, Illinois 61821 United States

Manufacturer .................... : The same as above.

Address .............................. : The same as above.

Product Name .................... : Transmitter

Model No. ........................... : STX3

Standards .......................... : FCC CFR47 Part 15 Section 15.249: 2016

Date of Receipt sample .... : 2019-01-23

Date of Test ....................... : 2019-01-24 to 2019-02-20

Date of Issue ...................... : 2019-03-15
Test Result ......................... : Pass

Remarks:
The results shown in this test report refer only to the sample(s) tested, this test report cannot be
reproduced, except in full, without prior written permission of the company. The report would be invalid
without specific stamp of test institute and the signatures of compiler and approver.

Prepared By:
Waltek Services (Shenzhen) Co., Ltd.
Address: 1/F., Fukangtai Building, West Baima Road, Songgang Street, Baoan District, Shenzhen,
Guangdong, China
Tel :+86-755-83551033
Fax:+86-755-83552400
Compiled by: Approved by:

Ford Wang / Project Engineer Philo Zhong / Manager

Waltek Services (Shenzhen) Co.,Ltd.
http://www.waltek.com.cn Page 1 of 30

$Reference No.: WTF19S01005314W V1 Page 3 of 30 Test Facility: A. Accreditations for Conformity Assessment (International) Country/Region Scope Covered By Scope Note USA FCC ID \ DOC \ VOC 1 Canada IC ID \ VOC 2 Japan MIC-T \ MIC-R - Europe EMCD \ RED - Taiwan NCC - ISO/IEC 17025 Hong Kong OFCA - Australia RCM - India WPC - Thailand NTC - Singapore IDA - Note: 1. FCC Designation No.: CN1201. Test Firm Registration No.: 523476. 2. ISED CAB identifier: CN0013 B. TCBs and Notify Bodies Recognized Testing Laboratory. Recognized Testing Laboratory of … Notify body number TUV Rheinland Intertek Optional. TUV SUD SGS Phoenix Testlab GmbH 0700 Element Materials Technology Warwick Ltd 0891 Timco Engineering, Inc. 1177 Eurofins Product Service GmbH 0681 Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn$

Reference No.: WTF19S01005314W V1 Page 4 of 30

3 Contents
Page
1 COVER PAGE ........................................................................................................................................... 1
2 LABORATORIES INTRODUCTION ................................................................................................................... 2
3 CONTENTS ............................................................................................................................................................ 4
4 REVISION HISTORY ............................................................................................................................................ 5
5 GENERAL INFORMATION.................................................................................................................................. 6
5.1 GENERAL DESCRIPTION OF E.U.T. ............................................................................................................ 6
5.2 DETAILS OF E.U.T. ..................................................................................................................................... 6
5.3 TEST MODE ................................................................................................................................................ 6
6 TEST SUMMARY .................................................................................................................................................. 7
7 EQUIPMENT USED DURING TEST .................................................................................................................. 8
7.1 EQUIPMENT LIST......................................................................................................................................... 8
7.2 DESCRIPTION OF SUPPORT UNITS ........................................................................................................... 10
7.3 MEASUREMENT UNCERTAINTY................................................................................................................. 10
7.4 TEST EQUIPMENT CALIBRATION............................................................................................................... 10
8 RADIATION EMISSION TEST .......................................................................................................................... 11
8.1 EUT OPERATION ...................................................................................................................................... 11
8.2 TEST SETUP ............................................................................................................................................. 12
8.3 SPECTRUM ANALYZER SETUP.................................................................................................................. 13
8.4 TEST PROCEDURE .................................................................................................................................... 14
8.5 TEST RESULT ........................................................................................................................................... 15
9 PERIODIC OPERATION .................................................................................................................................... 17
10 OUTSIDE OF BAND EMISSION ....................................................................................................................... 19
10.1 TEST PROCEDURE .................................................................................................................................... 19
10.2 TEST RESULT ........................................................................................................................................... 19
11 20 DB BANDWIDTH MEASUREMENT ........................................................................................................... 21
11.1 TEST PROCEDURE .................................................................................................................................... 21
11.2 TEST RESULT ........................................................................................................................................... 21
12 ANTENNA REQUIREMENT .............................................................................................................................. 23
13 PHOTOGRAPHS- STX3 TEST SETUP ........................................................................................................... 24
13.1 RADIATION EMISSION ............................................................................................................................... 24
14 PHOTOGRAPHS - CONSTRUCTIONAL DETAILS ...................................................................................... 26
14.1 MODEL STX3- EXTERNAL PHOTOS ......................................................................................................... 26
14.2 MODEL STX3 - INTERNAL PHOTOS ......................................................................................................... 29

Waltek Services (Shenzhen) Co.,Ltd.
http://www.waltek.com.cn

Reference No.: WTF19S01005314W V1 Page 5 of 30

4 Revision History

Date of
Date of
Test report No. Receipt Date of Test Purpose Comment Approved
Issue
sample

2019-01-24
WTF19S01005
2019-01-23 to 2019-02- 2019-02-21 original - Replaced
314W 20

2019-01-24
WTF19S01005
2019-01-23 to 2019-02- 2019-03-15 Version 1 Updated Valid
314W V1 20

Waltek Services (Shenzhen) Co.,Ltd.
http://www.waltek.com.cn

Reference No.: WTF19S01005314W V1 Page 6 of 30

5 General Information
5.1 General Description of E.U.T.
Product: Transmitter
Model(s): STX3
Model Description: N/A
Operation Frequency: 2405-2475MHz

Hardware Version: REVB

Software Version: REVD

Highest frequency
1.25GHz
(Exclude Radio):

Storage Location: Internal Storage

Note: N/A

5.2 Details of E.U.T.
Ratings: DC4V-DC6V，<50mA for battery

5.3 Test Mode
All test mode(s) and condition(s) mentioned were considered and evaluated respectively by
performing full tests, the worst data were recorded and reported.

Test mode Lower channel Middle channel Upper channel

Transmitting 2405MHz 2440MHz 2475MHz

Waltek Services (Shenzhen) Co.,Ltd.
http://www.waltek.com.cn

Reference No.: WTF19S01005314W V1 Page 7 of 30

6 Test Summary
Test Items Test Requirement Result
Conducted Emissions 15.207 NA
15.249(a)
Radiated Emission 15.209 PASS
15.205(a)
Periodic Operation 15.35(c) PASS
15.249
Outside of Band Emission 15.205 PASS
15.209
20dB Bandwidth 15:215(c) PASS
Antenna Requirement 15.203 PASS

Waltek Services (Shenzhen) Co.,Ltd.
http://www.waltek.com.cn

Reference No.: WTF19S01005314W V1 Page 8 of 30

7 Equipment Used during Test
7.1 Equipment List
Conducted Emissions Test Site 1#
Last
Calibration
Item Equipment Manufacturer Model No. Serial No. Calibration
Due Date
Date
1. EMI Test Receiver R&S ESCI 100947 2018-09-12 2019-09-11
2. LISN R&S ENV216 101215 2018-09-12 2019-09-11
3. Cable Top TYPE16(3.5M) - 2018-09-12 2019-09-11
Conducted Emissions Test Site 2#
Last
Calibration
Item Equipment Manufacturer Model No. Serial No. Calibration
Due Date
Date
1. EMI Test Receiver R&S ESCI 101155 2018-09-12 2019-09-11
2. LISN SCHWARZBECK NSLK 8128 8128-289 2018-09-12 2019-09-11
261115-001-
3. Limiter York MTS-IMP-136 2018-09-12 2019-09-11
0024
4. Cable LARGE RF300 - 2018-09-12 2019-09-11
3m Semi-anechoic Chamber for Radiation Emissions Test site 1#
Last
Calibration
Item Equipment Manufacturer Model No. Serial No. Calibration
Due Date
Date
1 Spectrum Analyzer R&S FSP 100091 2018-04-29 2019-04-28
2 Active Loop Antenna Beijing Dazhi ZN30900A - 2018-04-09 2019-04-08
Trilog Broadband
3 SCHWARZBECK VULB9163 336 2018-04-09 2019-04-08
Antenna
Coaxial Cable
4 Top TYPE16(13M) - 2018-09-12 2019-09-11
(below 1GHz)
Broad-band Horn
5 SCHWARZBECK BBHA 9120 D 667 2018-04-09 2019-04-08
Antenna
Broad-band Horn
6 SCHWARZBECK BBHA 9170 335 2018-04-09 2019-04-08
Antenna
Broadband COMPLIANCE
7 PAP-1G18 2004 2018-04-13 2019-04-12
Preamplifier DIRECTION
Coaxial Cable
8 Top 1GHz-25GHz EW02014-7 2018-04-13 2019-04-12
(above 1GHz)

Waltek Services (Shenzhen) Co.,Ltd.
http://www.waltek.com.cn

Reference No.: WTF19S01005314W V1 Page 9 of 30

3m Semi-anechoic Chamber for Radiation Emissions Test site 2#
Last
Calibration
Item Equipment Manufacturer Model No. Serial No Calibration
Due Date
Date
1 Test Receiver R&S ESCI 101296 2018-04-13 2019-04-12
Trilog Broadband
2 SCHWARZBECK VULB9160 9160-3325 2018-04-09 2019-04-08
Antenna
Compliance
3 Amplifier pirection PAP-0203 22024 2018-04-13 2019-04-12
systems inc
4 Cable HUBER+SUHNER CBL2 525178 2018-04-13 2019-04-12
RF Conducted Testing
Last
Calibration
Item Equipment Manufacturer Model No. Serial No. Calibration
Due Date
Date
EMC Analyzer
1. Agilent E7405A MY45114943 2018-09-12 2019-09-11
(9k~26.5GHz)
Spectrum Analyzer
2. R&S FSL6 100959 2018-09-12 2019-09-11
(9k-6GHz)
Signal Analyzer
3. Agilent N9010A MY50520207 2018-09-12 2019-09-11
(9k~26.5GHz)

Waltek Services (Shenzhen) Co.,Ltd.
http://www.waltek.com.cn

Reference No.: WTF19S01005314W V1 Page 10 of 30

7.2 Description of Support Units
Equipment Manufacturer Model No.
/ / /

7.3 Measurement Uncertainty
Parameter Uncertainty
Conducted Emission ± 3.64 dB(AC mains 150KHz~30MHz)
± 5.08 dB (Bilog antenna 30M~1000MHz)
Radiated Spurious Emissions
± 5.47 dB (Horn antenna 1000M~25000MHz)
Radio Frequency ± 1 x 10-7Hz
RF Power ± 0.42 dB
RF Power Density ± 0.7dB
Conducted Spurious Emissions ± 2.76 dB (9kHz~26500MHz)
Confidence interval：95%. Confidence factor:k=2

7.4 Test Equipment Calibration
All the test equipments used are valid and calibrated by CEPREI Certification Body that
address is No.110 Dongguan Zhuang RD. Guangzhou, P.R.China.

Waltek Services (Shenzhen) Co.,Ltd.
http://www.waltek.com.cn

Reference No.: WTF19S01005314W V1 Page 11 of 30

8 Radiation Emission Test
Test Requirement: FCC Part15 Paragraph 15.249&15.209&15.205
Test Method: ANSI 63.10: 2013
Measurement Distance: 3m
Test Result: PASS
15.249(a)Limit:
Fundamental frequency Field strength of fundamental Field strength of harmonics
mV/m dBuV/m uV/m dBuV/m
902-928 MHz 50 94 500 54
2400-2483.5 MHz 50 94 500 54
5725-5875 MHz 50 94 500 54
24.0-24.25 GHz 250 108 2500 68
15.209 Limit:
Field Strength Field Strength Limit at 3m Measurement Dist
Frequency
Distance
(MHz) uV/m uV/m dBuV/m
(m)
0.009 ~ 0.490 2400/F(kHz) 300 10000 * 2400/F(kHz) 20log(2400/F(kHz)) + 80
0.490 ~ 1.705 24000/F(kHz) 30 100 * 24000/F(kHz) 20log(24000/F(kHz)) + 40
1.705 ~ 30 30 30 100 * 30 20log(30) + 40
30 ~ 88 100 3 100 20log(100)
88 ~ 216 150 3 150 20log(150)
216 ~ 960 200 3 200 20log(200)
Above 960 500 3 500 20log(500)
Note: RF Voltage(dBuV)=20 log10 RF Voltage(uV)

8.1 EUT Operation

Operating Environment :
Temperature: 23.5 °C
Humidity: 51.1 % RH
Atmospheric Pressure: 101.2kPa
EUT Operation :
The test was performed in transmitting mode, the test data were shown in the report.

Waltek Services (Shenzhen) Co.,Ltd.
http://www.waltek.com.cn

Reference No.: WTF19S01005314W V1 Page 14 of 30

8.4 Test Procedure

1. The EUT is placed on a turntable. For below 1GHz, the EUT is 0.8m above ground plane;
For above1GHz, the EUT is 1.5m above ground plane.
2. The turntable shall be rotated for 360 degrees to determine the position of maximum emission
level.
3. EUT is set 3m away from the receiving antenna, which is moved from 1m to 4m to find out the
maximum emissions. The spectrum was investigated from the lowest radio frequency signal
generated in the device, without going below 9 kHz, up to the tenth harmonic of the highest
fundamental frequency or to 40 GHz, whichever is lower.
4. Maximum procedure was performed on the six highest emissions to ensure EUT compliance.
5. And also, each emission was to be maximized by changing the polarization of receiving antenna
both horizontal and vertical.
6. Repeat above procedures until the measurements for all frequencies are complete.
7. The radiation measurements are tested under 3-axes(X,Y,Z) position(X denotes lying on the
table, Y denotes side stand and Z denotes vertical stand), After pre-test, It was found that the
worse radiation emission was get at the X position. So the data shown was the X position only.
8. New battery is used during test.

Waltek Services (Shenzhen) Co.,Ltd.
http://www.waltek.com.cn

Reference No.: WTF19S01005314W V1 Page 15 of 30

8.5 Test Result

Test Frequency :16MHz~ 30MHz
The measurements were more than 20 dB below the limit and not reported.
Test Frequency: 30MHz ~ 18GHz
Test Mode:The Worst mode（Low channel Transmitting） data is recorded on the report

Receiv RX FCC Part
Turn Antenna Correct 15.231/209/205
Frequen er Detect Correcte
table ed
cy Readi or Hei Pol d Factor
Angle Amplit Limit Margin
ng ght ar ude
(PK/QP Degre (H/ (dBμV/ (dBμV/
(MHz) (dBμV) (m) (dB/m) (dB)
/Ave) e V) m) m)

2405.00 91.19 PK 349 1.9 H -13.08 78.11 114.00 -35.89

2405.00 95.47 PK 281 1.8 V -13.08 82.39 114.00 -31.61

4810.00 50.21 PK 151 1.7 H 0.09 50.30 74.00 -23.70

4810.00 52.31 PK 11 1.1 V 0.09 52.40 74.00 -21.60

7215.00 45.21 PK 176 1.1 H 3.01 48.22 74.00 -25.78

7215.00 43.26 PK 64 1.9 V 3.01 46.27 74.00 -27.73

9620.00 41.52 PK 67 1.6 H 5.39 46.91 74.00 -27.09

9620.00 39.62 PK 125 1.7 V 5.39 45.01 74.00 -28.99

12025 36.25 PK 323 1.4 H 8.15 44.40 74.00 -29.60

12025 35.21 PK 295 1.5 V 8.15 43.36 74.00 -30.64

14430 32.12 PK 74 1.2 H 10.02 42.14 74.00 -31.86

14430 32.14 PK 267 1.5 V 10.02 42.16 74.00 -31.84

Waltek Services (Shenzhen) Co.,Ltd.
http://www.waltek.com.cn

Reference No.: WTF19S01005314W V1 Page 16 of 30

AV = Peak +20Log10(duty cycle) =Peak+(-4.25)[refer to section 7 for more detail]
FCC Part
Turn RX Antenna Duty 15.231/209/205
Frequency PK table cycle AV
Angle Height Polar Factor Limit Margin

(dBμV/m (dBμV/m (dBμV/m
(MHz) Degree (m) (H/V) (dB) (dB)
) ) )

2405.00 78.11 349 1.9 H -4.25 73.86 94.00 -20.14

2405.00 82.39 281 1.8 V -4.25 78.14 94.00 -15.86

4810.00 50.30 151 1.7 H -4.25 46.05 54.00 -7.95

4810.00 52.40 11 1.1 V -4.25 48.15 54.00 -5.85

7215.00 48.22 176 1.1 H -4.25 43.97 54.00 -10.03

7215.00 46.27 64 1.9 V -4.25 42.02 54.00 -11.98

9620.00 46.91 67 1.6 H -4.25 42.66 54.00 -11.34

9620.00 45.01 125 1.7 V -4.25 40.76 54.00 -13.24

12025 44.40 323 1.4 H -4.25 40.15 54.00 -13.85

12025 43.36 295 1.5 V -4.25 39.11 54.00 -14.89

14430 42.14 74 1.2 H -4.25 37.89 54.00 -16.11

14430 42.16 267 1.5 V -4.25 37.91 54.00 -16.09

Test Frequency :From 18GHz to 25GHz
The measurements were more than 20 dB below the limit and not reported.

Waltek Services (Shenzhen) Co.,Ltd.
http://www.waltek.com.cn

Document Created: 2019-04-07 07:56:23
Document Modified: 2019-04-07 07:56:23