RF Exposure Information Part 1

FCC ID: AJL8221468

RF Exposure Info

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FCCID_184007

RUBICOM SYSTEMS, INC.

FCC TEST REPORT

(INTENTIONAL RADIATOR)

FOR THE

ROCKWELL COLLINS, INC.

VHF-4000 COMMUNICATIONS TRANSCEIVER

(118-137MHz)

SEPTEMBER 2001

R ubicom Systems, Inc. THIS REPORT SHALL NOT BE REPRODUCED
284 West Drive, Suite B EXCEPT IN FULL WITHOUT THE W RITTEN
M elbourne, FL 32904 APPROVAL OF THE TESTING LABORATORY

JA-1855

FCC TEST REPORT

(INTENTIONAL RADIATOR)

FOR THE

ROCKWELL COLLINS, INC.

VHF-4000 COMMUNICATIONS TRANSCEIVER

(118-137MHz)

S/N: FBLF

PART 1

Prepared by: __________________________________________
Joseph G. Barbee

Tested by: __________________________________________
Alex Belardinelli

Performed by: Performed for:

RUBICOM SYSTEMS, INC. ROCKWELL COLLINS, INC.
284 West Drive, Suite B 1100 W. Hibiscus Blvd.
Melbourne, Florida 32904 Melbourne, Florida 32901

Received: September 9, 2001

Completed: September 12, 2001

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JA-1855

TABLE OF CONTENTS

Paragraph Title Page

ABSTRACT ............................................................................................................. 3

1.0 INTRODUCTION ..................................................................................................... 4
1.1 Purpose ................................................................................................................... 4
1.2 Requirements .......................................................................................................... 4
1.3 Equipment Under Test Description......................................................................... 5
1.4 Summary of Results ................................................................................................ 5

2.0 APPLICABLE DOCUMENTS ................................................................................. 6

3.0 TEST SITE DESCRIPTION .................................................................................... 7
3.1 Environmental Conditions ....................................................................................... 7

4.0 TEST INSTRUMENTATION ................................................................................... 8

5.0 TEST SAMPLE SETUP AND CONFIGURATION ................................................. 9

6.0 PROCEDURES AND RESULTS .......................................................................... 11
6.1 Radiated Emissions (Receive Mode).................................................................... 11
6.2 Spurious Emissions (TX Mode) ............................................................................ 11

APPENDIX A COMPLIANCE LETTER ....................................................................................... 35

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JA-1855

ABSTRACT

This report presents test results of emanations found emitting from the Rockwell

Collins VHF-4000 and the comparison of these emissions to the requirements of FCC,

Title 47, Part 15, Subpart C for spurious radiated emissions.

This testing was performed on a 3 meter open area test site at Rubicom

Systems, Inc. (RSI). The testing was performed for Rockwell Collins, Inc. under

purchase order 4500525371 and is filed under JA-1855 at RSI. The results of this test

effort demonstrate compliance of the Rockwell Collins, VHF-4000 to FCC, Title 47, Part

15, Subpart C intentional radiators.

Equipment under test (EUT) was a Rockwell Collins VHF-4000 Transceiver, s/n:

FBLF.

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JA-1855

1.0 INTRODUCTION

1.1 Purpose

The purpose of this report is to show compliance of the Rockwell Collins,

Inc. Model VHF-4000 to the requirements of Part 15 of the FCC Rules and Regulations

(47CFR, Part 15, Subpart C) for intentional radiators. The tests were performed on a 3

meter site.

1.2 Requirements

The test requirements are as follows:

RADIATED RX MODE (15.209A)

Frequency 3 Meter 3 Meter
(MHz) Field Strength (dBµV/m)
(µV/m)
30 - 88 100 40
88 - 216 150 43.5
216 - 960 200 46
960 - Above 500 54 Avg.
74 Peak

CONDUCTED TX MODE (CFR 87.139)

Harmonics of transmitter attenuated by at least 43dB. This test was

performed as a conducted test on the antenna port up to the 10th harmonic. No signals

appear at the antenna port other than the intended transmit signal.

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JA-1855

1.3 Equipment Under Test

The VHF-4000 Transceiver is a solid state, 2280 channel AM transceiver

designed to provide air to air or air to ground voice or data communications in the

118.000 to 136.975MHz VHF band. It operates in communications systems having

25KHz or 8.33KHz channel spacing.

The unit operates on 27.5 VDC and is packaged for use in configurations

that do not use ARINC standard packages. Power output is 20 watt carrier power. A

low pass filter at the output attenuates transmitter harmonics of at least 60dB below the

carrier level. This report reflects the transceiver status after “Red Label Mod. #16” was

installed.

1.4 Summary of Results

Results are presented in Paragraph 6.0. The VHF-4000 meets the

requirements stated in Paragraph 1.2.

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2.0 APPLICABLE DOCUMENTS

The following documents form a part of this report to the extent expressed

herein:

FCC Code of Federal Regulations Title 47, Part 15
FCC Procedure for Measuring RF Emissions from Computing
Devices FCC/OET MP-4, July 1987
ANSI C63.4-1992
FCC Characteristics of Open Field Test Sites Bulletin OET
55, October 1989

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JA-1855

3.0 TEST SITE DESCRIPTION

This testing was performed at Rubicom Systems, Inc. 3 meter open area

test site. The description of the measurement facility was found to be compliant with the

requirements of Section 2.948 of the FCC rules. A copy of the compliance letter is

attached to this report as Appendix A.

3.1 Environmental Conditions

Environmental conditions during testing of the EUT were as follows:

Date: September 11, 2001

Temperature: 88º

Barometer: 29.35 inches

Humidity: 80%

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JA-1855

5.0 TEST SAMPLE SETUP AND CONFIGURATION

The Rockwell Collins, Inc. VHF-4000 was placed on the nonconductive

80cm high manual turntable. The unit was configured with a DC power supply, VHF

antenna port to a 50 ohm termination. The system cable was coiled on the table with the

EUT and dummy load. The DC power supply was located below the EUT.

Photo 1 presents the equipment setup.

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JA-1855

6.0 PROCEDURES AND RESULTS

6.1 Radiated Emissions (Receive Mode)

Data Sheets 6.1-1 through 6.1-10 present the scans during electric field

testing on the open air test site. There were no signals detected from the transceiver in

the receive mode, therefore no tabulated data is listed in this section. Data Sheets 6.1-

11 through 6.1-20 present the ambient scans.

6.2 Spurious Emissions (TX Mode)

Spurious results are presented in Data Sheets 6.2-1 through 6.2-2. The

results are for three transmit channels (low, mid and high). This data was collected at

the antenna port (attenuated by 20dB) and measured as a conducted measurement to

prove the harmonic levels to be greater than 43dB below the transmit signal. Data sheet

6.2-3 is the conducted spurious signal of the Mode II channel at 136.975MHz.

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Document Created: 2001-12-17 18:16:23
Document Modified: 2001-12-17 18:16:23

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