Exhibit 06 EMF Test Report Dot 4479 B41K

FCC ID: TA8AKRY901432-1

Test Report

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FCCID_4419914

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1 Summary of EMF Test Report1

Equipment under test (EUT)
Ericsson Dot 4479 B41K (internal antennas)
Product name
Ericsson Dot 4489 B41K (external antennas)
KRY 901 432/1
Product number
KRY 901 432/2
Supported bands, Tx frequency range
B41K (2600) 2515–2675 NR TDD
(MHz), and standards
Exposure environment General public/uncontrolled

Results
The minimum (test) separation distance required for the equipment under test (EUT) to comply with the mobile
device exposure conditions and relevant limits applicable in the USA [1]-[3] is provided in the table below for
the general public (uncontrolled exposure).

RF exposure assessment results for general public (uncontrolled) exposure as obtained for Dot 4479/4489 B41K together with
an assumed output power tolerance of 2 dB using procedures applicable for the US market [3].
Nominal output
TDD DL duty Separation
Band Standard power from the Test position
cycle distance
radio
Direction of
B41K NR 4 x 0.25 W 74% 34 cm
maximum gain

1
This page contains a summary of the test results. The full report provides a complete description of all test details and results.

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2 General information

The test results reported in this document have been obtained by simple calculations according to plane-wave
equivalent conditions [3]. The purpose of the tests was to verify that the EUT is in compliance with the
appropriate RF exposure standards, recommendations and limits [1]–[3].

It should be noted that the test results presented in this test report are valid for the frequency range and for
the antenna properties specified in Table 1, in addition to the power level, the power tolerance and TDD
downlink duty cycle specified in Table 2. These data were supplied by the client and may affect the validity of
the results.

The test results were determined for Dot 4479 B41K (equipped with internal antennas) and are also applicable
for Dot 4489 B41K connected to external antennas provided that the antenna gain is equal to or smaller than
4.9 dBi.

3 Equipment under test

Table 1 summarizes the technical data for the EUT. Photographs of the EUT are presented in Appendix A.
Table 1 Technical data for the EUT.

Product name Ericsson Dot 4479 B41K

Product tested KRY 901 432/1

Supported bands, Tx frequency range
B41K (2600) 2515–2675 NR TDD
(MHz), and standards

Dimensions of Radio head, H x D (mm) 50 × 200

Configuration(s) covered by this report B41K (2600)

Antenna(s) Four internal antenna branches Maximum antenna gain: 4.9 dBi

Exposure environment General public/uncontrolled

In Table 2 nominal output power levels are given.

Table 2 Nominal output power levels.
Maximum time-
Nominal output Power Transmission TDD DL duty
Band Standard averaged output
power2 [dBm] tolerance [dB] loss [dB] cycle
power3
B41K NR (TDD) 24 2 0 74% 30.7

The EUT related data in Table 1 and Table 2 were supplied by the client.

4 EMF exposure assessments

FCC procedures [3] specify exposure assessment methods to verify compliance with EMF exposure limits [1]
of mobile devices. A minimum test separation distance of at least 20 cm is required between the device and
nearby persons to apply mobile device exposure limits. The minimum test separation distance for which the
equipment is shown to comply with the exposure limits must be clearly provided in the operating and installation
instructions.

2 Nominal output power per port.
3 Conservative measure of the total maximum possible output power level delivered to the antennas including losses, tolerances, and maximum
downlink/uplink ratio.

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The assessments were conducted for maximum power configurations, i.e., by assuming 100% utilization.
Effects of real RBS utilization (time-averaged) is reasonably foreseeable and will significantly reduce the time-
averaged power and the RF exposure. This factor was not considered in this assessment, which adds to the
conservativeness of the obtained compliance boundaries.

4.1 Field strength calculations

The total effective radiated power based on the maximum antenna gain of Table 1 and the output power level
of Table 2 is 2.2 W. As a consequence, the categorical exclusion provision of FCC CFR title 47, § 2.1091(c)
applies [5] and the minimum test separation distance may be estimated by simple calculations according to
plane-wave equivalent conditions [3].

The minimum test separation distance is determined assuming correlated transmit signals. Based on the
maximum gain of the single antenna (𝐺ant = 4.9 dBi, see Table 1), the directional gain, 𝐺, may be taken as
10.9 dBi according to [4] (𝐺 = 𝐺ant + 10 log10 𝑁 , where 𝑁 is the number of simultaneously transmitting
antennas). This is most likely a very conservative assumption since the antennas are spatially separated and
their maximum gain occurs at different locations which add extra conservativeness of the results.

Power density may be conservatively estimated as

𝑃tot 𝐺
𝑆est = ,
4𝜋𝑟 2 𝑆lim

where

𝑃tot : Total conducted power for the cellular bands4,

𝐺 : Directional gain5,

𝑟: Separation distance from antenna

𝑆lim : Power density exposure limit of 10 W/m2,

𝑆est : Estimated power density.

For a minimum test separation distance of 34 cm (Table 3), the estimated power density complies with the
mobile device exposure conditions and relevant limits applicable in the USA [1]-[3] (see Table 4) for the general
public (uncontrolled exposure).

Table 3 RF exposure assessment results for general public (uncontrolled) exposure as obtained for Dot 4479/4489 B41K
together with an assumed output power tolerance of 2 dB using procedures applicable for the US market [3].
Nominal output
TDD DL duty Separation
Band Standard power from the Test position 3GPP band
cycle distance
radio
Direction of
B41K NR 4 x 0.25 W 74% 34 cm B41K
maximum gain

Table 4 General public (uncontrolled) RF EMF exposure limits applicable in the US market.

Band 𝑺𝐥𝐢𝐦 (W/m2)
B41K (2600) 10

4
This is equal to the maximum output power (in W) in Error! Reference source not found..
5
This is equal to linear value of 𝐺.

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5 Conclusion
The results in Section 4 show that the plane-wave equivalent power density for the Ericsson Dot 4479 B41K,
estimated according to the requirements of FCC [3] is below the relevant MPE limits [1] at a separation distance
of at least 34 cm between the equipment and any nearby person.

As Dot 4489 B41K is equipped with the same hardware as Dot 4479 B41K except the antennas, the test results
are also applicable for Dot 4489 connected to external antennas with similar radiation characteristics as the
Dot 4479 antennas.

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6 References

[1] FCC, Code of Federal Regulations CFR title 47, part 1.1310 “Radiofrequency radiation exposure
limits”, Federal Communications Commission (FCC), 2017.
[2] FCC, OET Bulletin 65, “Evaluating compliance with FCC guidelines for human exposure to
radiofrequency electromagentic fields”, 1997.
[3] FCC KDB 447498 D01, “Mobile and Portable Devices RF exposure procedures and Equipment
Authorization Policies”, 2015.
[4] FCC KDB 662911 D01, “Emissions Testing of Transmitters with Multiple Outputs in the Same Band”,
2013.
[5] FCC, Code of Federal Regulations CFR title 47, part 2.1091, “ Radiofrequency radiation exposure
evaluation: mobile devices”, Federal Communications Commission (FCC), 2017.

7 Revision History

Rev. Date Description

A 2019-08-16 First revision

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GFTL-19:000861 Uen, Rev A, 2019-08-16

Appendix A. Information to be included in the CPI
Table A.1 lists the minimum separation distance for which the RF EMF exposure from Dot 4479 B41K and Dot
4489 B41K is below the limits specified by the FCC as applicable in:
- USA (47 CFR 1.1310)

Table A.1: Minimum separation distance for general public/uncontrolled exposure applicable in USA and markets employing
the FCC RF exposure limits
Nominal output
TDD DL duty Separation
Band Standard power from the Test position 3GPP band
cycle distance
radio
Direction of
B41K NR 4 x 0.25 W 74% 34 cm B41K
maximum gain

Note to the table: The test results were determined for Dot 4479 (equipped with internal antennas) and are
also applicable for Dot 4489 connected to external antennas provided that the antenna gain is equal or
smaller than 4.9 dBi.

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Appendix B. Guidelines on how to install the product
The Ericsson Dot 4479 B41K and Dot 4489 B41K (KRY 901 432/1 and KRY 901 432/2) shall be installed to
make sure that the general public does not have access to the applicable RF EMF compliance boundary. The
compliance boundary dimensions were determined for the product transmitting in free space.

Document Created: 2019-08-16 17:58:38
Document Modified: 2019-08-16 17:58:38

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