TEST REPORT

Report No.: E201605048784-1 Application No.: E201605048784

Applicant: Comba Telecom Ltd.
Applicant 611 East Wing, No. 8 Science Park West Avenue, Hong Kong Science Park, Tai
Address: Po, Hong Kong
Sample
700/800MHz Public Safety Bi-directional Amplifier
Description:
Model: RX-7W22
Test Location: EMC Laboratory of Guangzhou GRG Metrology and Test Co., Ltd.

Test
FCC PART 2, FCC PART 90
Specification:

Test Date: 2016-05-06 to 2016-05-15

Issue Date: 2016-06-01

Test Result: Pass.

Prepared By: Reviewed By: Approved By:
Jacky zhang/ Test Engineer Lyn xiao/ Technical Assistance Yong Dai / Manager

Date: 2016-06-01 Date: 2016-06-01 Date: 2016-06-01

Other Aspects:

Abbreviations: ok / P = passed; fail / F = failed; n.a. / N = not applicable

The test result in this test report refers exclusively to the presented test sample. This report shall not be reproduced except in full, without the written
approval of GRGT.

GRG Metrology and Test Co., Ltd. Address: 163, Pingyun Road, West of Huangpu Avenue, Guangzhou, Guangdong, P.R. China

Tel:+86-20-38699960 Fax:+86-20-38695185 Email: cert-center@grg.net.cn http://www.grgtest.com Ver.:1.0 / 01.Jan.2011

Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

DIRECTIONS OF TEST

1. This station carries out test task according to the national regulation of
verifications which can be traced to National Primary Standards and BIPM.

2. The test report merely corresponds to the test sample. It is not permitted to
copy extracts of these test result without the written permission of the test
laboratory.

3. If there is any objection concerning the test, the client should inform the
laboratory within 15 days from the date of receiving the test report.

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

Table of Contents
1  GENERAL DESCRIPTION OF EUT ..................................................................................................................... 4 
1.1  CLIENT INFORMATION ........................................................................................................................................... 4 
1.2  MANUFACTURER AND FACTORY ........................................................................................................................... 4 
1.3  BASIC DESCRIPTION OF EUT................................................................................................................................. 4 
1.4  STANDARDS APPLICABLE FOR TESTING ................................................................................................................ 4 
1.5  SIGNAL CONTROL PROCESS ................................................................................................................................... 5 
2  TEST RESULT SUMMARY ................................................................................................................................... 6 
3  LABORATORY AND ACCREDITATIONS ......................................................................................................... 7 
3.1  TEST LOCATION ..................................................................................................................................................... 7 
3.2  ACCREDITATIONS .................................................................................................................................................. 7 
4  MEASUREMENTS UNCERTAINTY .................................................................................................................... 7 
5  EQUIPMENTS USED DURING TEST .................................................................................................................. 8 
6  RADIO TECHNICAL REQUIREMENT SPECIFICATION .............................................................................. 9 
6.1  RADIATED OUTPUT POWER ...................................................................................................................................... 9 
6.1.1  Limit.............................................................................................................................................................. 9 
6.1.2  Test configuration ........................................................................................................................................ 9 
6.1.3  Test procedures .......................................................................................................................................... 10 
6.1.4  Test Results................................................................................................................................................. 11 
6.1.5  Test screenshot ........................................................................................................................................... 16 
6.2  OCCUPIED BANDWIDTH ....................................................................................................................................... 28 
6.2.1  Limit............................................................................................................................................................ 28 
6.2.2  Test configuration ...................................................................................................................................... 29 
6.2.3  Test procedures .......................................................................................................................................... 29 
6.2.4  Test Results................................................................................................................................................. 31 
6.2.5  Test screenshot ........................................................................................................................................... 37 
6.3  EMISSION MASK ................................................................................................................................................... 64 
6.3.1  Limit............................................................................................................................................................ 64 
6.3.2  Test configuration ...................................................................................................................................... 67 
6.3.3  Test procedures .......................................................................................................................................... 68 
6.3.4  Test Results................................................................................................................................................. 69 
6.3.5  Test screenshot ........................................................................................................................................... 73 
6.4  CONDUCTED SPURIOUS EMISSIONS ........................................................................................................................ 89 
6.4.1  Limit............................................................................................................................................................ 89 
6.4.2  Test configuration ...................................................................................................................................... 90 
6.4.3  Test procedures .......................................................................................................................................... 91 
6.4.4  Test Results................................................................................................................................................. 92 
6.4.5  Test screenshot ......................................................................................................................................... 100 
6.5  FREQUENCY STABILITY ....................................................................................................................................... 125 
6.5.1  Limit.......................................................................................................................................................... 125 
6.5.2  Test configuration .................................................................................................................................... 125 
6.5.3  Test procedures ........................................................................................................................................ 126 
6.5.4  Test Results............................................................................................................................................... 127 
6.5.5  Test screenshot ......................................................................................................................................... 128 
6.6  NOISE FIGURE ...................................................................................................................................................... 130 
6.6.1  Limit.......................................................................................................................................................... 130 
6.6.2  Test configuration .................................................................................................................................... 130 
6.6.3  Test procedures ........................................................................................................................................ 131 
6.6.4  Test Results............................................................................................................................................... 132 
6.6.5  Test screenshot ......................................................................................................................................... 133 
6.7  INTERMODULATION PRODUCT ............................................................................................................................. 136 
6.7.1  Limit.......................................................................................................................................................... 136 
6.7.2  Test configuration .................................................................................................................................... 136 
6.7.3  Test procedures ........................................................................................................................................ 137 
6.7.4  Test Results............................................................................................................................................... 138 

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.7.5  Test screenshot ......................................................................................................................................... 142 

6.8  RADIATED SPURIOUS EMISSIONS ......................................................................................................................... 152 
6.8.1  Limit.......................................................................................................................................................... 152 
6.8.2  Test configuration .................................................................................................................................... 152 
6.8.3  Test procedures ........................................................................................................................................ 153 
6.8.4  Test Results............................................................................................................................................... 155 
APPENDIX A. PHOTOGRAPH OF THE TEST CONNECTION DIAGRAM ...................................................... 159 

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

1 General description of EUT

1.1 Client information

Name: Comba Telecom Ltd.

Address: 611 East Wing, No. 8 Science Park West Avenue, Hong Kong Science
Park, Tai Po, Hong Kong

1.2 Manufacturer and Factory

Manufacture Name: Comba Telecom system (China) Ltd.

Address: No. 10 Shenzhou Road, Guangzhou Science City

Factory: Comba Telecom system (China) Ltd.

Address: No. 10 Shenzhou Road, Guangzhou Science City

1.3 Basic description of EUT

Product Name: 700/800MHz Public Safety Bi-directional Amplifier

Product Model: RX-7W22
Trade Name: Comba
Power Supply: AC 110~240V, 50/60Hz
Power cord: AC power cord (4m)
Type of Modulation: C4FM, Tetra and Analog FM(10kHz/1kHz)
Frequency Band: 700MHz Band:
Downlink: 799MHz ~805MHz, Uplink: 769MHz ~ 775MHz.
800MHz Band:
Downlink: 851MHz ~869MHz, Uplink: 806MHz ~ 824MHz.
Normal Power Downlink: 33dBm;
Output Uplink: 25dBm;
Normal System Downlink: 90dB;
Gain Uplink: 90dB;
Operating
-33°C to +55°C
Temperature
Operating Humidity 5% to 95%
Antenna Type: N/A
1.4 Standards applicable for testing
The standard used FCC part 2, part 90;

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

1.5 Signal control process

Figure 1: PS BDA Functional Block Diagram

In the downlink, the BTS signals are received by donor antenna of the repeater. After the
duplexer, the signals are sent to the LNA module for pre-amplification and digital RF integrated
module for digital filtering and frequency conversion. Then the DL signals will be sent to downlink PA
to amplify power and filter via duplexer. After amplification, the signals are transmitted at the MT port
to the service antenna.
In the uplink, the mobile signals are received by the service antenna. After the MT port
integrated duplexer, the signals are sent to the LNA, integrated module for digital filtering, then to PA
for power amplification and to duplexer. After that, the uplink signals are sent to the donor antenna for
transmission back to the BTS.

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

2 Test result summary

Test Item Test Requirement Test Method Result
FCC part 2. 1046& KDB 935210
Radiated output D05 Indus Booster Basic Meas
Part 90.219(e)(1) PASS
power v01r01
EIA/TIA 603- D/2.2.17
FCC part 2. 1049& KDB 935210
Occupied bandwidth Part 90.219(a) D05 Indus Booster Basic Meas PASS
v01r01
Part 90.210(b), Part
FCC part 2. 1047& FCC part 2.
90.210(c), Part
Emission mask 1051 & KDB 935210 D05 Indus PASS
90.210(g). Part
Booster Basic Meas v01r01
90.210(h)
KDB 935210 D05 Indus Booster
Intermodulation
Part 90.210(b) Basic Meas v01r01 PASS
product
EIA/TIA 603- D/2.2.16
KDB 935210 D05 Indus Booster
part 90.213 & part
Frequency stability Basic Meas v01r01 PASS
90.539
EIA/TIA 603- D/2.2.2
KDB 935210 D05 Indus Booster
Noise figure Part 90.219(e)(2) PASS
Basic Meas v01r01
KDB 935210 D05 Indus Booster
Radiated spurious
Part 90.219(e)(3) Basic Meas v01r01 PASS
emissions
EIA/TIA 603- D/2.2.12
KDB 935210 D05 Indus Booster
Conducted spurious
Part 90.219(e)(3) Basic Meas v01r01 PASS
emissions
EIA/TIA 603- D/2.2.13

Notes:
1. This is a signal booster equipment;
2. The equipment has audio low pass filter;
3. This device supports bandwidths: 12.5kHz and 25 kHz;
4. The modulation methods used in this test are C4FM，Tetra 和Analog FM

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

3 Laboratory and accreditations

3.1 Test location

The tests and measurements refer to this report were performed by Guangzhou GRG Metrology and
Test Co., Ltd.
Add.: 163 Pingyun Rd, West of Huangpu Ave, Guangzhou, 510656, P. R. China
Telephone: +86-20-38699959, 38699960, 38699961
Fax : +86-20-38695185

3.2 Accreditations
Our laboratories are accredited and approved by the following approval agencies according to
ISO/IEC 17025.

USA FCC Listed Lab No. 688188

Canada Registration No.:8355A-1

4 Measurements uncertainty
Where relevant, the following measurement uncertainty levels have been estimated for tests
performed on the EUT as specified in CISPR 16-4-2:

Measurement Frequency Uncertainty

Horizontal 30MHz～1000MHz 4.2dB
Horizontal 1GHz～6GHz 4.2dB
Radiated Emission
Vertical 30MHz～1000MHz 4.4dB
Vertical 1GHz～6GHz 4.4dB
9kHz～150kHz 2.6dB
Conducted Emission
150kHz～30MHz 2.4dB
This uncertainty represents an expanded uncertainty factor of k=2.

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

5 Equipments used during test

Calibration Calibration
Name of Equipment Manufacturer Model Serial Number
Due(yy-mm-dd) Interval
Signal Generator Agilent E4432B MY50142497 2015-09-21 2016-09-20

Signal Generator Agilent E4438C MY45090084 2016-03-04 2017-03-03

Spectrum analyzer R&S FSV3 102004 2015-07-16 2016-07-15

Spectrum analyzer Agilent N9020A MY50510389 2015-09-05 2016-09-04

SNS Series Noise
Agilent N4000A MY44421910 2015-11-25 2016-11-24
Source
NFA Series Noise
Agilent N8973A MY45271261 2016-04-23 2017-04-22
Figure Analyzer
Frequency meter Sweden PM6685R SM826664 2015-11-08 2016-11-07
Voltage parameters
China weibo PF1211 0092502 2015-10-18 2016-10-18
tester
Power splitter Comba PS-R4-ON50M 20150831 ---- ----
China
Voltage regulator TDGC2J-3 1070 2016-02-10 2017-02-09
tianzheng
High low
China BAOTY YP-HP20-01 112109 2015-10-23 2016-10-22
temperature test box
Radiated Spurious Emission
ETS-LINDGR
Bi-Log Antenna 3142C 00075971 2016-03-14 2017-03-13
EN
ETS.LINDGR
Horn antenna 3117 00075824 2015-07-03 2016-07-02
EN
Rohde &
EMI Receiver ESU 40 100106 2016-02-17 2017-02-16
Schwarz
Semi anechoic 966(RFD-F/A-1
ETS 3730 2016-01-02 2017-01-01
chamber 00)
Spectrum analyzer HP 8563E 3804A08426 2015-09-28 2016-09-27

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6 Radio technical requirement specification

6.1 Radiated output power
Test Date (yy-mm-dd): 2016-05-06 to 2016-05-15
Test environment: Normal
Ambient Temp 24.5℃~26.3℃, Humid 49%~65%, Atmospheric
Pressure 101kpa
Power supply: AC 120V 50/60Hz
Test Method: FCC part 2. 1046& KDB 935210 D05 Indus Booster Basic Meas v01r01
Test Requirement: FCC part 90.219(e)(1)
6.1.1 Limit
The output power capability of a signal booster must be designed for deployments providing
a radiated power not exceeding 5 Watts ERP for each retransmitted channel according to tables 1.
Table 1 Maximum output power limits

Maximum output power(ERP)

Assigned frequency range(MHz)
W dBm
Above 150 5 37.00
NOTE:
1. RF channels to be tested for single-carrier: Low frequency, Mid frequency and High
frequency;
2. Modulation types are C4FM, Tetra and Analog FM(10kHz/1kHz);
3. The nominal output power for Manufacturer declaration: 33dBm±1dB

6.1.2 Test configuration

Figure 1: Maximum output power arrangement for Downlink

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

Figure 2: Maximum output power arrangement for Uplink

6.1.3 Test procedures

(1) Connect the equipment as illustrated Figure 1 and Figure 2, when the output power is over the
maximum value of the Spectrum Analyzer, add the attenuator to avoid destroying;
(2) The signal generator should initially be configured to produce either of the required test
signals (i.e., broadband or narrowband);
(3) Set the signal generator frequency to the center frequency of the EUT operating band;
(4) While monitoring the output power of the EUT, measured using the methods of in KDB
Publication 971168 [R8], increase the input level until a 1 dB increase in the input signal
power no longer causes a 1 dB increase in the output signal power;
(5) Record this level as the ALC threshold level;
(6) Repeat the procedure with the remaining test signal;
(7) Repeat RF channels to be tested for single-carrier: Low frequency and High frequency;
Note: The equipment has ALC function.

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.1.4 Test Results

6.1.4.1 700MHz Band
6.1.4.1.1 Modulation signal: C4FM
Resolution Bandwidth: 100 Hz
Video Bandwidth: 300 Hz
Detector mode: Peak
Trace mode: Average
Symbol Rate: 4.8ksps
Configuration: Single Band
Operating frequency range: Downlink: 769MHz~775MHz
Uplink:799MHz~805MHz

Carrier frequency Input power Output power 1*

Limit(dBm) Margin 2*(dB) Result
(MHz) (dBm) (dBm)
Downlink transmit mode
769.00625 -56.50 33.38 37.00 -3.62 pass

772.00625 -57.40 33.65 37.00 -3.35 pass

774.99375 -57.00 33.09 37.00 -3.91 pass

Uplink transmit mode

799.00625 -64.30 25.55 37.00 -11.45 pass

802.00625 -64.00 24.91 37.00 -12.09 pass

804.99375 -63.00 24.29 37.00 -12.71 pass

Note:
1*--Output power means to Maximum value from output part (with ALC).
2*--Margin= Maximum ERP- specification limit.

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.1.4.1.2 Modulation signal: Tetra

Resolution Bandwidth: 300 Hz
Video Bandwidth: 1 kHz
Detector mode: Peak
Trace mode: Average
Symbol Rate: 18ksps
Configuration: Single Band
Operating frequency range: Downlink: 769MHz~775MHz
Uplink:799MHz~805MHz

Carrier frequency Input power Output power 1*

Limit(dBm) Margin 2*(dB) Result
(MHz) (dBm) (dBm)
Downlink transmit mode
769.0125 -56.70 33.54 37.00 -3.46 pass

772.0125 -57.80 33.26 37.00 -3.74 pass

774.9875 -56.80 33.11 37.00 -3.89 pass

Uplink transmit mode

799.0125 -64.00 24.85 37.00 -12.15 pass

802.0125 -63.30 25.26 37.00 -11.74 pass

804.9875 -63.50 24.37 37.00 -12.63 pass

Note:
1*--Output power means to Maximum value from output part (with ALC)..
2*--Margin= Maximum ERP- specification limit.

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.1.4.1.3 Modulation signal: Analog FM(10kHz/1kHz)

Resolution Bandwidth: 300 Hz
Video Bandwidth: 1 kHz
Detector mode: Peak
Trace mode: Average
Symbol Rate: 1ksps
Frequency Dev: 10kHz
Configuration: Single Band
Operating frequency range: Downlink: 769MHz~775MHz
Uplink:799MHz~805MHz

Carrier frequency Input power Output power 1*

Limit(dBm) Margin 2*(dB) Result
(MHz) (dBm) (dBm)
Downlink transmit mode
769.0125 -56.60 33.39 37.00 -3.61 pass

772.0125 -57.50 33.27 37.00 -3.73 pass

774.9875 -57.10 32.87 37.00 -4.13 pass

Uplink transmit mode

799.0125 -65.5 25.78 37.00 -11.22 pass

802.0125 -64.5 25.78 37.00 -11.22 pass

804.9875 -64.5 25.11 37.00 -11.89 pass

Note:
1*--Output power means to Maximum value from output part (with ALC)..
2*--Margin= Maximum ERP- specification limit.

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6.1.4.2 800MHz Band

6.1.4.1.4 Modulation signal: C4FM
Resolution Bandwidth: 100 Hz
Video Bandwidth: 300 Hz
Detector used: Average
Configuration: Single Band
Symbol Rate: 4.8ksps
Operating frequency range: Downlink: 851MHz~869MHz
Uplink:806MHz~824MHz

Carrier frequency Input power Output power 1*

Limit(dBm) Margin 2*(dB) Result
(MHz) (dBm) (dBm)
Downlink transmit mode
851.00625 -56.2 33.22 37.00 -3.78 pass

860.00625 -57.9 33.63 37.00 -3.37 pass

868.99375 -57.4 33.31 37.00 -3.69 pass

Uplink transmit mode

806.00625 -64.30 24.87 37.00 -12.13 pass

815.00625 -65.70 25.12 37.00 -11.88 pass

823.99375 -66.30 24.90 37.00 -12.10 pass

Note:
1*--Output power means to Maximum value from output part (with ALC).
2*--Margin= Maximum ERP- specification limit.

6.1.4.1.5 Modulation signal: Tetra

Resolution Bandwidth: 300 Hz
Video Bandwidth: 1 kHz
Detector used: Average
Configuration: Single Band
Symbol Rate: 18ksps
Operating frequency range: Downlink: 851MHz~869MHz
Uplink:806MHz~824MHz

Carrier frequency Input power Output power 1*

Limit(dBm) Margin 2*(dB) Result
(MHz) (dBm) (dBm)
Downlink transmit mode
851.0125 -56.30 33.00 37.00 -4.00 pass

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

860.0125 -57.60 33.60 37.00 -3.40 pass

868.9875 -57.20 33.31 37.00 -3.69 pass

Uplink transmit mode

806.0125 -63.80 25.21 37.00 -11.79 pass

815.0125 -65.30 25.52 37.00 -11.48 pass

823.9875 -66.00 25.29 37.00 -11.71 pass

Note:
1*--Output power means to Maximum value from output part (with ALC)..
2*--Margin= Maximum ERP- specification limit.

6.1.4.1.6 Modulation signal: Analog FM(10kHz/1kHz)

Resolution Bandwidth: 300 Hz
Video Bandwidth: 1 kHz
Detector used: Average
Configuration: Single Band
Symbol Rate: 1ksps
Frequency Dev: 10kHz
Operating frequency range: Downlink: 851MHz~869MHz
Uplink:806MHz~824MHz

Carrier frequency Input power Output power 1*

Limit(dBm) Margin 2*(dB) Result
(MHz) (dBm) (dBm)
Downlink transmit mode
851.0125 -56.20 32.96 37.00 -4.04 pass

860.0125 -57.70 33.36 37.00 -3.64 pass

868.9875 -57.20 33.15 37.00 -3.85 pass

Uplink transmit mode

806.0125 -64.00 25.00 37.00 -12.00 pass

815.0125 -65.60 25.25 37.00 -11.75 pass

823.9875 -66.30 25.04 37.00 -11.96 pass

Note:
1*--Output power means to Maximum value from output part (with ALC)..
2*--Margin= Maximum ERP- specification limit.

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.1.5 Test screenshot

6.1.5.1 700MHz Band
6.1.5.1.1 Modulation signal: C4FM
(1) Downlink

Low Frequency: 769.00625MHz Mid Frequency: 772.00625MHz

Frequency: 774.99375MHz

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

(2) Uplink

Low Frequency: 799.00625MHz Mid Frequency: 802.00625MHz

High Frequency: 804.00625MHz

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.1.5.1.2 Modulation signal: Tetra

(1) Downlink

Low Frequency: 769.0125MHz Mid Frequency: 772.0125MHz

High Frequency: 774.9875MHz

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

(2) Uplink

Low Frequency: 799.0125MHz Mid Frequency: 802.0125MHz

Frequency: 804.9875MHz

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.1.5.1.3 Modulation signal: Analog FM(10kHz/1kHz)

(1) Downlink

Low Frequency: 769.0125MHz Mid Frequency: 772.0125MHz

High Frequency: 774.9875MHz

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

(2) Uplink

Low Frequency: 799.0125MHz Mid Frequency: 802.0125MHz

High Frequency: 804.9875MHz

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.1.5.2 800MHz Band

6.1.5.2.1 Modulation signal: C4FM
(1) Downlink

Low Frequency: 851.00625MHz Mid Frequency: 860.00625MHz

High Frequency: 868.99375MHz

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

(2) Uplink

Low Frequency: 806.00625MHz Mid Frequency: 815.00625MH

High Frequency: 823.99375MHz

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.1.5.2.2 Modulation signal: Tetra

(1) Downlink

Low Frequency: 851.0125MHz Mid Frequency: 860.0125MHz

High Frequency: 868.9875MHz

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

(2) Uplink

Low Frequency: 806.0125MHz Mid Frequency: 815.0125MH

High Frequency: 823.9875MHz

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.1.5.2.3 Modulation signal: Analog FM(10kHz/1kHz)

(1) Downlink

Low Frequency: 851.0125MHz Mid Frequency: 860.0125MHz

High Frequency: 868.9875MHz

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

(2) Uplink

Low Frequency: 806.0125MHz Mid Frequency: 815.0125MH

High Frequency: 823.9875MHz

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.2 Occupied bandwidth

Test Date (yy-mm-dd): 2016-05-06 to 2016-05-15
Test environment: Normal
Ambient Temp 24.5℃~26.3℃, Humid 49%~65%, Atmospheric
Pressure 101kpa
Power supply: AC 120V 50/60Hz
Test Method: FCC part 2. 1049& KDB 935210 D05 Indus Booster Basic Meas v01r01
Test Requirement: FCC part 90.219(a)
6.2.1 Limit
A signal booster designed to retransmit signals on one or more specific channels. A signal
booster is deemed to be a Class A signal booster if none of its passbands exceed 75 kHz
This test was performed to measure transmitter occupied bandwidth. Specification test limits
are given in table 2.
Table 2 Occupied bandwidth limits
Modulation envelope reference Maximum allowed bandwidth
Assigned frequency (MHz)
points(Occupied BW X% power) (kHz)
700MHz Band
Downlink: 758~775 99 75
Uplink:788~805
800MHz Band
Downlink: 851~869 99 75
Uplink:806~824
NOTE:
1. RF channels to be tested for single-carrier: Low, Mid and High frequency;
2. Modulation types are C4FM, Tetra and Analog FM(10kHz/1kHz);
3. Modulation envelope reference points are provided in terms of attenuation below the
unmodulated carrier.

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6.2.2 Test configuration

Figure 3: Occupied bandwidth arrangement for Downlink

Figure 4: Occupied bandwidth arrangement for Uplink

6.2.3 Test procedures

(1) Connect the equipment as illustrated Figure 3 and Figure 4, when the output power is over
the maximum value of the Spectrum Analyzer, add the attenuator to avoid destroying;
(2) Configure the signal generator to transmit the appropriate test signal associated with the
public safety emission designation;
(3) Configure the signal level to be just below the ALC threshold and maximum gain;
(4) Connect a spectrum analyzer to the output of the EUT using appropriate attenuation as
necessary;
(5) Set the spectrum analyzer center frequency to the nominal EUT channel center frequency.
The span range for the spectrum analyzer shall be between 2 times to 5 times the OBW;
(6) The nominal RBW shall be 300 Hz for 25kHz and 100 Hz for all other emissions types;

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

(7) Set the reference level of the spectrum analyzer to accommodate the maximum input
amplitude level;
(8) Set spectrum analyzer detection mode to peak, and trace mode to max hold;
(9) Allow the trace to fully stabilize;
(10) Confirm that the signal is contained within the appropriate emissions mask;
(11) Use the marker function to determine the maximum emission level and record the
associated frequency as f0;
(12) Capture the emissions mask plot for inclusion in the test report (output signal spectra);
(13) Measure the EUT input signal power (signal generator output signal) directly from the
signal generator using power measurement guidance provided in KDB Publication 971168
[R8] (input signal spectra);
(14) Compare the spectral plot of the output signal (determined in step 11), to the input signal
(determined in step l) to affirm they are similar (in passband and roll off characteristic
features and relative spectral locations);
(15) Repeat steps (4) to (16) with the input signal amplitude set 3 dB above the AGC threshold;
(16) Repeat steps (2 to (17) for all authorized operational bands and emissions types;
(17) Include all accumulated spectral plots depicting EUT input signal and EUT output signal in
the test report, and note any observed dissimilarities;
(18) Repeat RF channels to be tested for single-carrier: Low and High frequency;

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.2.4 Test Results

6.2.4.1 700MHz Band
6.2.4.1.1 Modulation signal: C4FM
Resolution Bandwidth: 100 Hz
Video Bandwidth: 300 Hz
Detector mode: Peak hold
Trace mode: Maximum hold
Modulation envelope reference points Occupied BW 99% power
Configuration: Single Band
Symbol Rate: 4.8ksps
Operating frequency range: Downlink: 769MHz~775MHz
Uplink:799MHz~805MHz

Carrier Input Occupied Output

Input power
frequency BW Occupied BW Limit(kHz) Result
(dBm)
(MHz) (kHz) (kHz)
Downlink transmit mode
-56.50 8.393632417 8.321273517 75.00 pass
769.00625
-53.50 8.393632417 8.321273517 75.00 pass

-57.40 8.321273517 8.321273517 75.00 pass

772.00625
-54.40 8.321273517 8.321273517 75.00 pass

-57.00 8.393632417 8.321273517 75.00 pass

774.99375
-54.00 8.393632417 8.321273517 75.00 pass

Uplink transmit mode

-64.30 8.393632417 8.393632417 75.00 pass

799.00625
-61.30 8.393632417 8.683068017 75.00 pass

-64.00 8.321273517 8.248914617 75.00 pass

802.00625
-61.00 8.321273517 8.755426918 75.00 pass

-63.00 8.393632417 8.321273517 75.00 pass

804.99375
-60.00 8.393632417 8.683068017 75.00 pass

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.2.4.1.2 Modulation signal: Tetra

Resolution Bandwidth: 300 Hz
Video Bandwidth: 1 kHz
Detector mode: Peak hold
Trace mode: Maximum hold
Modulation envelope reference points Occupied BW 99% power
Configuration: Single Band
Symbol Rate: 18ksps
Operating frequency range: Downlink: 769MHz~775MHz
Uplink:799MHz~805MHz

Carrier Input Occupied Output

Input power
frequency BW Occupied BW Limit(kHz) Result
(dBm)
(MHz) (kHz) (kHz)
Downlink transmit mode
-56.70 20.984081042 20.984081042 75.00 pass
769.0125
-53.70 20.984081042 20.984081042 75.00 pass

-57.80 20.984081042 20.984081042 75.00 pass

772.0125
-54.80 20.984081042 20.984081042 75.00 pass

-56.80 20.984081042 20.984081042 75.00 pass

774.9875
-53.80 20.984081042 20.984081042 75.00 pass

Uplink transmit mode

-64.00 20.984081042 20.984081042 75.00 pass

799.0125
-61.00 20.984081042 20.984081042 75.00 pass

-64.30 21.128798842 20.984081042 75.00 pass

802.0125
-61.30 21.128798842 20.984081042 75.00 pass

-62.80 20.984081042 20.984081042 75.00 pass

804.9875
-59.80 20.984081042 20.984081042 75.00 pass

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.2.4.1.3 Modulation signal: Analog FM(10kHz/1kHz)

Resolution Bandwidth: 300 Hz
Video Bandwidth: 1 kHz
Detector mode: Peak hold
Trace mode: Maximum hold
Modulation envelope reference points Occupied BW 99% power
Configuration: Single Band
Symbol Rate: 1ksps
Frequency Dev: 10kHz
Operating frequency range: Downlink: 769MHz~775MHz
Uplink:799MHz~805MHz

Carrier Input Occupied Output

Input power
frequency BW Occupied BW Limit(kHz) Result
(dBm)
(MHz) (kHz) (kHz)
Downlink transmit mode
-56.60 23.878437048 23.878437048 75.00 pass
769.0125
-53.60 23.878437048 23.878437048 75.00 pass

-57.50 23.878437048 23.878437048 75.00 pass

772.0125
-54.50 23.878437048 23.878437048 75.00 pass

-57.10 23.878437048 23.878437048 75.00 pass

774.9875
-54.10 23.878437048 23.878437048 75.00 pass

Uplink transmit mode

-65.50 23.878437048 23.878437048 75.00 pass

799.0125
-62.50 23.878437048 23.878437048 75.00 pass

-64.50 23.878437048 23.878437048 75.00 pass

802.0125
-61.50 23.878437048 23.878437048 75.00 pass

-64.50 23.878437048 23.878437048 75.00 pass

804.9875
-61.50 23.878437048 23.878437048 75.00 pass

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 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.2.4.2 800MHz Band

6.2.4.2.1 Modulation signal: C4FM
Resolution Bandwidth: 100 Hz
Video Bandwidth: 300 Hz
Detector mode: Peak hold
Trace mode: Maximum hold
Modulation envelope reference points Occupied BW 99% power
Configuration: Single Band
Symbol Rate: 4.8ksps
Operating frequency range: Downlink: 851MHz~869MHz
Uplink:806MHz~824MHz

Carrier Input Occupied Output

Input power
frequency BW Occupied BW Limit(kHz) Result
(dBm)
(MHz) (kHz) (kHz)
Downlink transmit mode
-56.20 8.393632417 8.683068017 75.00 pass
851.00625
-53.20 8.393632417 8.248914616 75.00 pass

-57.90 8.393632417 8.610709117 75.00 pass

860.00625
-54.90 8.393632417 8.683068017 75.00 pass

-57.40 8.393632417 8.683068017 75.00 pass

868.99375
-54.40 8.393632417 8.683068017 75.00 pass

Uplink transmit mode

-64.30 8.321273517 8.393632417 75.00 pass

806.00625
-61.30 8.321273517 8.393632417 75.00 pass

-65.70 8.321273517 8.321273517 75.00 pass

815.00625
-62.70 8.321273517 8.393632417 75.00 pass

-66.30 8.393632417 8.393632417 75.00 pass

823.99375
-63.30 8.393632417 8.321273517 75.00 pass

Page 34 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.2.4.2.2 Modulation signal: Tetra

Resolution Bandwidth: 300 Hz
Video Bandwidth: 1 kHz
Detector mode: Peak hold
Trace mode: Maximum hold
Modulation envelope reference points Occupied BW 99% power
Configuration: Single Band
Symbol Rate: 18ksps
Operating frequency range: Downlink: 851MHz~869MHz
Uplink:806MHz~824MHz

Carrier Input Occupied Output

Input power
frequency BW Occupied BW Limit(kHz) Result
(dBm)
(MHz) (kHz) (kHz)
Downlink transmit mode
-56.30 21.128798842 20.984081042 75.00 pass
851.0125
-53.30 21.128798842 20.984081042 75.00 pass

-57.60 20.984081042 20.839363242 75.00 pass

860.0125
-54.60 20.984081042 20.984081042 75.00 pass

-57.20 20.984081042 20.839363242 75.00 pass

868.9875
-54.20 20.984081042 20.839363242 75.00 pass

Uplink transmit mode

-63.80 20.984081042 20.984081042 75.00 pass

806.0125
-60.80 20.984081042 20.984081042 75.00 pass

-65.30 20.984081042 20.984081042 75.00 pass

815.0125
-62.30 20.984081042 20.984081042 75.00 pass

-66.00 20.984081042 20.984081042 75.00 pass

823.9875
-63.00 20.984081042 20.984081042 75.00 pass

Page 35 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.2.4.2.3 Modulation signal: Analog FM(10kHz/1kHz)

Resolution Bandwidth: 300 Hz
Video Bandwidth: 1 kHz
Detector mode: Peak hold
Trace mode: Maximum hold
Modulation envelope reference points Occupied BW 99% power
Configuration: Single Band
Symbol Rate: 1ksps
Frequency Dev: 10kHz
Operating frequency range: Downlink: 851MHz~869MHz
Uplink:806MHz~824MHz

Carrier Input Occupied Output

Input power
frequency BW Occupied BW Limit(kHz) Result
(dBm)
(MHz) (kHz) (kHz)
Downlink transmit mode
-56.20 23.733719247 23.154848046 75.00 pass
851.0125
-53.20 23.733719247 23.154848046 75.00 pass

-57.70 23.733719247 23.154848046 75.00 pass

860.0125
-54.70 23.733719247 23.154848046 75.00 pass

-57.20 23.733719247 23.154848046 75.00 pass

868.9875
-54.20 23.733719247 23.154848046 75.00 pass

Uplink transmit mode

-64.00 23.878437048 23.733719247 75.00 pass

806.0125
-61.00 23.878437048 23.589001447 75.00 pass

-65.60 23.878437048 23.733719247 75.00 pass

815.0125
-62.60 23.878437048 23.733719247 75.00 pass

-66.30 23.878437048 23.733719247 75.00 pass

823.9875
-63.30 23.878437048 23.733719247 75.00 pass

Page 36 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.2.5 Test screenshot

6.2.5.1 700MHz Band
6.2.5.1.1 Modulation signal: C4FM
(1) Downlink

Low Frequency: 769.00625MHz, Input occupied BW Low Frequency: 769.00625MHz, Output occupied
BW(ALC)

Low Frequency: 769.00625MHz, Output occupied BW

(with the input signal amplitude set 3 dB above the ALC
threshold)

Page 37 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

Mid Frequency: 772.00625MHz, Input occupied BW Mid Frequency: 772.00625MHz, Output occupied
BW(ALC)

Mid Frequency: 772.00625MHz, Output occupied BW

(with the input signal amplitude set 3 dB above the ALC
threshold)

High Frequency: 774.99375MHz, Input occupied BW High Frequency: 774.99375MHz, Output occupied
BW(ALC)

Page 38 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

High Frequency: 774.99375MHz, Output occupied BW

(with the input signal amplitude set 3 dB above the ALC
threshold)
(2) Uplink

Low Frequency: 799.00625MHz, Input occupied BW Low Frequency: 799.00625MHz, Output occupied
BW(ALC)

Low Frequency: 799.00625MHz, Output occupied BW

(with the input signal amplitude set 3 dB above the ALC
threshold)

Page 39 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

Mid Frequency: 802.00625MHz, Input occupied BW Mid Frequency: 802.00625MHz, Output occupied
BW(ALC)

Mid Frequency: 802.00625MHz, Output occupied BW

(with the input signal amplitude set 3 dB above the ALC
threshold)

High Frequency: 804.99375MHz, Input occupied BW High Frequency: 804.99375MHz, Output occupied
BW(ALC)

Page 40 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

High Frequency: 804.99375MHz, Output occupied BW

(with the input signal amplitude set 3 dB above the ALC
threshold)

6.2.5.1.2 Modulation signal: Tetra

(1) Downlink

Low Frequency: 769.0125MHz, Input occupied BW Low Frequency: 769.0125MHz, Output occupied
BW(ALC)

Page 41 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

Low Frequency: 769.0125MHz, Output occupied BW

(with the input signal amplitude set 3 dB above the ALC
threshold)

Mid Frequency: 772.0125MHz, Input occupied BW Mid Frequency: 772.0125MHz, Output occupied
BW(ALC)

Mid Frequency: 772.0125MHz, Output occupied BW

(with the input signal amplitude set 3 dB above the ALC
threshold)

Page 42 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

High Frequency: 774.9875MHz, Input occupied BW High Frequency: 774.9875MHz, Output occupied
BW(ALC)

High Frequency: 774.9875MHz, Output occupied BW

(with the input signal amplitude set 3 dB above the ALC
threshold)
(2) Uplink

Low Frequency: 799.0125MHz, Input occupied BW Low Frequency: 799.0125MHz, Output occupied
BW(ALC)

Page 43 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

Low Frequency: 799.0125MHz, Input occupied

BW(with the input signal amplitude set 3 dB above the
ALC threshold)

Mid Frequency: 802.0125MHz, Input occupied BW Mid Frequency: 802.0125MHz, Output occupied
BW(ALC)

Mid Frequency: 802.0125MHz, Input occupied BW(with

the input signal amplitude set 3 dB above the ALC
threshold)

Page 44 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

High Frequency: 804.9875MHz, Input occupied High Frequency: 804.9875MHz, Output occupied
BW BW(ALC)

High Frequency: 804.9875MHz, Input occupied

BW(with the input signal amplitude set 3 dB
above the ALC threshold)

Page 45 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

6.2.5.1.3 Modulation signal: Analog FM(10kHz/1kHz)

(1) Downlink

Low Frequency: 769.0125MHz, Input occupied BW Low Frequency: 769.0125MHz, Output occupied
BW(ALC)

Low Frequency: 769.0125MHz, Output occupied BW

(with the input signal amplitude set 3 dB above the ALC
threshold)

Page 46 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

Mid Frequency: 772.0125MHz, Input occupied BW Mid Frequency: 772.0125MHz, Output occupied
BW(ALC)

Mid Frequency: 772.0125MHz, Output occupied BW

(with the input signal amplitude set 3 dB above the ALC
threshold)

High Frequency: 774.9875MHz, Input occupied BW High Frequency: 774.9875MHz, Output occupied
BW(ALC)

Page 47 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

High Frequency: 774.9875MHz, Output occupied BW

(with the input signal amplitude set 3 dB above the ALC
threshold)
(2) Uplink

Low Frequency: 799.0125MHz, Input occupied BW Low Frequency: 799.0125MHz, Output occupied
BW(ALC)

Low Frequency: 799.0125MHz, Input occupied

BW(with the input signal amplitude set 3 dB above the
ALC threshold)

Page 48 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

Mid Frequency: 802.0125MHz, Input occupied BW Mid Frequency: 802.0125MHz, Output occupied
BW(ALC)

Mid Frequency: 802.0125MHz, Input occupied BW(with

the input signal amplitude set 3 dB above the ALC
threshold)

High Frequency: 804.9875MHz, Input occupied BW High Frequency: 804.9875MHz, Output occupied
BW(ALC)

Page 49 of 160
 Report No.: E201605048784-1 FCC ID: PX8RX-7W22 Application No.: E201605048784

High Frequency: 804.9875MHz, Input occupied

BW(with the input signal amplitude set 3 dB above the
ALC threshold)

Page 50 of 160