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5 March 2021
Electromagnetic Interference (EMI) Results for the AssetLink Hybrid
Transponder H-ISO 18000-7
Prepared For: Mike Morrissey
Automated Movement and Identification Solutions (AMIS)
Integration/System Engineer Contract Support, LC&RS
Prepared By:
David Chaboty
Test Engineer
Integrated Demonstrations & Applications Laboratory (IDAL)
Electromagnetic Interference (EMI) Research Laboratory
AFRL/RYWD, WPAFB, OH
Reviewed By:
Steven C. Coffman
Test Engineer
Integrated Demonstrations & Applications Laboratory (IDAL)
Electromagnetic Interference Research Laboratory
AFRL/RYWD, WPAFB, OH
2
Table of Contents
1.0 EXECUTIVE SUMMARY .................................................................................................... 3 1.1 Results Summary ................................................................................................................ 3
2.0 GENERAL ............................................................................................................................... 4 2.1 Item Description .................................................................................................................. 4 2.2 Facility .................................................................................................................................. 5
2.3 Modes of Operation ............................................................................................................ 5 2.4 General Setup ...................................................................................................................... 5
3.0 MEASUREMENTS PERFORMED3.1 RE102 - RADIATED EMISSIONS, ELECTRIC
FIELD, 10 KHZ TO 18 GHZ ....................................................................................................... 6 3.1.1 RE102 Measurement Conditions ................................................................................... 6
3.1.2 RE102 Results .............................................................................................................. 12 3.1.2.1 RE102 EUT Measurement Scans.............................................................................. 12
3.1.2.2 RE102 System Accuracy Scans ................................................................................ 23 3.1.2.3 RE102 Ambient Scans .............................................................................................. 27
3
1.0 EXECUTIVE SUMMARY
The AssetLink H-ISO 18000-7 transponder was evaluated in accordance with MIL-STD-461G
to the following requirements.
RE102 - Radiated Emissions, Electric Fields, 10 kHz to 18 GHz
1.1 Results Summary
RE102: The AssetLink H-ISO 18000-7 transponder passed all Air Force Fixed-Wing aircraft
criteria.
4
2.0 GENERAL
2.1 Item Description
The item tested was the AssetLink H-ISO 18000-7 transponder. It is a device that reports its
location.
AssetLink H-ISO 18000-7 Transponder
AssetLink H-ISO 18000-7 Transponder Data Plate
5
2.2 Facility
The measurements were performed in a 20 foot x 18 foot x 10 foot shielded room. The room is
treated with anechoic material in accordance with MIL-STD-461G requirements. For CE101,
CE102, RE101, RE102, CS101, CS114, and RS103 testing, the measurements were under
computer control in a control room adjacent to the main shielded room. For CS106, CS115 and
CS116, all of the test instrumentation was located in the main shielded room.
2.3 Modes of Operation
The AssetLink H-ISO 18000-7 transponder was battery powered for all testing.
2.4 General Setup
The general setup was as shown in the photos below. Additional photos are included in the
individual test sections.
Overall Setup
6
3.0 MEASUREMENTS PERFORMED3.1 RE102 - RADIATED EMISSIONS,
ELECTRIC FIELD, 10 KHZ TO 18 GHZ
3.1.1 RE102 Measurement Conditions
The AssetLink H-ISO 18000-7 transponder and measurement conditions were set up in
accordance with MIL-STD-461G requirements. The instrumentation used is listed below.
RE102 Test Equipment
Manufacturer Model Function Serial # Cal Due
Date
Rohde & Schwarz ESU-26 Spectrum Analyzer 100543 6/4/2021
Miteq AFS42-
01001800-43-
10P-42-L
Preamplifier 1589785 NCR
ETS Lindgren 3301B Rod Antenna 42919 NPC
EMCO 3109 Biconical Antenna 9603-2951 ICO
EMCO 3106 Double Ridge Guide Ant 2207 NPC
EMCO 3115 Double Ridge Guide Ant 2177 NCR
Hewlett Packard 8642B Signal Generator 2647A01011 6/12/2021
Hewlett Packard 8673E Signal Generator 2821A00442 6/17/2021
Electro-Metrics EM-6888 Stub Radiator 790115 NCR
Calibration requirements and designations per the US Air Force Calibration Authority
NCR - No Calibration Required
NPC - No Periodic Calibration Required
ICO - Initial Calibration Only Required
All antennas were positioned 1 meter from the EUT. Measurements above 30 MHz were
performed in both vertical and horizontal antenna polarity positions. The bandwidths and sweep
times used are listed below.
Bandwidths & Sweep Times
Frequency Band
(MHz)
Resolution BW
- 3 dB (kHz)
Video BW - 3 dB
(kHz)
Sweep Times
(Seconds)
Number of
Sweeps
0.01 - 0.15 1 3 4 1
0.15 - 2 10 30 6 1
2 – 8 10 30 9 1
8 - 30 10 30 33 1
30 - 90 100 300 9 1
90 - 120 100 300 4.5 1
120 - 200 100 300 12 1
200 - 400 100 300 30 1
400 - 1000 100 300 90 1
1000 - 2000 1000 3000 15 1
7
2000 - 4000 1000 3000 30 1
4000 - 8000 1000 3000 60 1
8000 - 12000 1000 3000 60 1
12000 - 18000 1000 3000 90 1
Commercial software is used for testing. The program is Dare Development’s RadiMation
package, Version 2014.2.3. The antennas factors for the measurement antennas as stored in the
software are shown below.
EMCO 3301B Monopole EMCO 3109 Biconical
8
EMCO 3106 Double Ridge Guide EMCO 3115 Double Ridge Guide
The cable loss from the antenna to the measurement receiver as stored in the software is shown
below. The loss was measured using a signal source and power meter. A reference level was
first established on the power meter at each frequency. The entire cable was then inserted and
the power level again measured. The difference is the cable loss.
Cable Loss - Thru Path
9
A preamplifier is used between 1 and 18 GHz to improve the sensitivity of the measurement
system. The gain as stored in the software is shown below.
Miteq 1589785 Gain, 1 to 18 GHz
Information used to determine the drive level for system accuracy scans is shown below. The
limit that is used is for RE102 small-fixed wing, aircraft applications. Injected levels in dBm are
calculated as follows:
Frequency
(MHz)
A B = A - 6 C D = B - C E = D - 107
Remarks Limit
(dBµV/m)
Limit less
6 dB
(dBµV/m)
Antenna
Factor
(dB/m)
Injected
Level
(dBµV)
Injected
Level
(dBm)
2.1 34.0 28.0 6 22.0 -85 Antenna factor for signal injection
purposes is 1/2 m height of rod
12 34.0 28.0 6 22.0 -85 Antenna factor for signal injection
purposes is 1/2 m height of rod
29.5 34.0 28.0 6 22.0 -85 Antenna factor for signal injection
purposes is 1/2 m height of rod
197 39.9 33.9 13.8 20.1 -86.9
990 53.9 47.9 22.4 25.5 -81.5
1950 59.8 53.8 27.3 26.5 - 80.5
17500 78.9 72.9 41.7 31.2 -75.8
Photos of the test setups are shown below.
10
Rod Antenna, 10 kHz to 30 MHz
Vertical Polarization Horizontal Polarization
Biconical Antenna, 30 to 200 MHz
11
Vertical Polarization Horizontal Polarization
Double Ridge Guide Antenna, 200 to 1000 MHz
Vertical Polarization Horizontal Polarization
Double Ridge Guide Antenna, 1 to 18 GHz
12
3.1.2 RE102 Results
3.1.2.1 RE102 EUT Measurement Scans
RE102: 2 - 8 MHz. AssetLink H-ISO 18000-7 Transponder, Time of Measurement: 3/1/2021
11:58:59 AM
RE102: 8 - 30 MHz. AssetLink H-ISO 18000-7 Transponder, Time of Measurement: 3/1/2021
11:59:56 AM
0
5
10
15
20
25
30
35
40
45
50
2 M 3 M 4 M 5 M 6 M 7 M 8 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
0
5
10
15
20
25
30
35
40
45
50
10 M 15 M 20 M 25 M 30 M8 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
13
RE102: 30 - 90 MHz. Antenna polarity: Vertical. AssetLink H-ISO 18000-7 Transponder, Time
of Measurement: 3/1/2021 12:21:12 PM
RE102: 30 - 90 MHz. Antenna polarity: Horizontal. AssetLink H-ISO 18000-7 Transponder,
Time of Measurement: 3/1/2021 12:23:03 PM
0
5
10
15
20
25
30
35
40
45
50
30 M 40 M 50 M 60 M 70 M 80 M 90 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
30 M 40 M 50 M 60 M 70 M 80 M 90 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail HelicopterSurface Ships Below Deck AF/Navy Ground
14
RE102: 90 - 120 MHz. Antenna polarity: Vertical. AssetLink H-ISO 18000-7 Transponder,
Time of Measurement: 3/1/2021 12:21:38 PM
RE102: 90 - 120 MHz. Antenna polarity: Horizontal. AssetLink H-ISO 18000-7 Transponder,
Time of Measurement: 3/1/2021 12:23:26 PM
0
5
10
15
20
25
30
35
40
45
50
55
60
90 M 95 M 100 M 105 M 110 M 115 M 120 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
0
5
10
15
20
25
30
35
40
45
50
55
60
90 M 95 M 100 M 105 M 110 M 115 M 120 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
15
RE102: 120 - 200 MHz. Antenna polarity: Vertical. AssetLink H-ISO 18000-7 Transponder,
Time of Measurement: 3/1/2021 12:12:54 PM
RE102: 120 - 200 MHz. Antenna polarity: Horizontal. AssetLink H-ISO 18000-7 Transponder,
Time of Measurement: 3/1/2021 12:10:46 PM
0
5
10
15
20
25
30
35
40
45
50
55
60
120 M 130 M 140 M 150 M 160 M 170 M 180 M 190 M 200 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
0
5
10
15
20
25
30
35
40
45
50
55
60
120 M 130 M 140 M 150 M 160 M 170 M 180 M 190 M 200 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
16
RE102: 200 - 400 MHz. Antenna polarity: Vertical. AssetLink H-ISO 18000-7 Transponder,
Time of Measurement: 3/1/2021 12:51:43 PM
RE102: 200 - 400 MHz. Antenna polarity: Horizontal. AssetLink H-ISO 18000-7 Transponder,
Time of Measurement: 3/1/2021 12:54:32 PM
0
10
20
30
40
50
60
70
200 M 250 M 300 M 350 M 400 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
10
15
20
25
30
35
40
45
50
55
60
65
70
200 M 250 M 300 M 350 M 400 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
17
RE102: 400 - 1000 MHz. Antenna polarity: Vertical. AssetLink H-ISO 18000-7 Transponder,
Time of Measurement: 3/1/2021 12:52:49 PM
RE102: 400 - 1000 MHz. Antenna polarity: Horizontal. AssetLink H-ISO 18000-7
Transponder, Time of Measurement: 3/1/2021 12:56:34 PM
10
15
20
25
30
35
40
45
50
55
60
65
70
400 M 500 M 600 M 700 M 800 M 900 M 1 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
10
15
20
25
30
35
40
45
50
55
60
65
70
400 M 500 M 600 M 700 M 800 M 900 M 1 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
18
RE102: 1 - 2 GHz. Antenna polarity: Vertical. AssetLink H-ISO 18000-7 Transponder, Time of
Measurement: 3/1/2021 1:38:38 PM
RE102: 1 - 2 GHz. Antenna polarity: Horizontal. AssetLink H-ISO 18000-7 Transponder, Time
of Measurement: 3/1/2021 1:31:35 PM
20
25
30
35
40
45
50
55
60
65
70
75
80
1 G 1.2 G 1.4 G 1.6 G 1.8 G 2 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Helicopter Fixed-Wing Aircraft < 25 m Nose-to-Tail Fixed-Wing Aircraft >= 25 m Nose-to-Tail
20
25
30
35
40
45
50
55
60
65
70
75
80
1 G 1.2 G 1.4 G 1.6 G 1.8 G 2 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
19
RE102: 2 - 4 GHz. Antenna polarity: Vertical. AssetLink H-ISO 18000-7 Transponder, Time of
Measurement: 3/1/2021 1:39:29 PM
RE102: 2 - 4 GHz. Antenna polarity: Horizontal. AssetLink H-ISO 18000-7 Transponder, Time
of Measurement: 3/1/2021 1:32:24 PM
30
35
40
45
50
55
60
65
70
75
80
85
90
2 G 2.5 G 3 G 3.5 G 4 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
30
35
40
45
50
55
60
65
70
75
80
85
90
2 G 2.5 G 3 G 3.5 G 4 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
20
RE102: 4 - 8 GHz. Antenna polarity: Vertical. AssetLink H-ISO 18000-7 Transponder, Time of
Measurement: 3/1/2021 1:42:10 PM
RE102: 4 - 8 GHz. Antenna polarity: Horizontal. AssetLink H-ISO 18000-7 Transponder, Time
of Measurement: 3/1/2021 1:33:50 PM
30
35
40
45
50
55
60
65
70
75
80
85
90
4 G 4.5 G 5 G 5.5 G 6 G 6.5 G 7 G 7.5 G 8 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
30
35
40
45
50
55
60
65
70
75
80
85
90
4 G 4.5 G 5 G 5.5 G 6 G 6.5 G 7 G 7.5 G 8 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
21
RE102: 8 - 12 GHz. Antenna polarity: Vertical. AssetLink H-ISO 18000-7 Transponder, Time
of Measurement: 3/1/2021 1:43:33 PM
RE102: 8 - 12 GHz. Antenna polarity: Horizontal. AssetLink H-ISO 18000-7 Transponder,
Time of Measurement: 3/1/2021 1:35:11 PM
40
45
50
55
60
65
70
75
80
85
90
95
100
8 G 8.5 G 9 G 9.5 G 10 G 10.5 G 11 G 11.5 G 12 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
40
45
50
55
60
65
70
75
80
85
90
95
100
8 G 8.5 G 9 G 9.5 G 10 G 10.5 G 11 G 11.5 G 12 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
22
RE102: 12 - 18 GHz. Antenna polarity: Vertical. AssetLink H-ISO 18000-7 Transponder, Time
of Measurement: 3/1/2021 1:45:18 PM
RE102: 12 - 18 GHz. Antenna polarity: Horizontal. AssetLink H-ISO 18000-7 Transponder,
Time of Measurement: 3/1/2021 1:37:01 PM
40
45
50
55
60
65
70
75
80
85
90
95
100
12 G 13 G 14 G 15 G 16 G 17 G 18 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
40
45
50
55
60
65
70
75
80
85
90
95
100
12 G 13 G 14 G 15 G 16 G 17 G 18 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
23
3.1.2.2 RE102 System Accuracy Scans
The following scans are performed to verify the integrity of the measurement setup prior to
testing. A calibrated signal is applied at the antenna connection that is equivalent to a level that
is 6 dB below the MIL-STD-461G limit. The indicated level on the plot should be 6 dB +/- 3 dB
from the limit line.
RE102: 2 - 8 MHz, 2.1 MHz. System accuracy. The indicated level on the plot should be 6 dB
+/- 3 dB from the limit line. Time of Measurement: 3/1/2021 11:51:09 AM
0
5
10
15
20
25
30
35
40
2 M 3 M 4 M 5 M 6 M 7 M 8 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft < 25 m Nose-to-Tail
24
RE102: 8 - 30 MHz, 12 MHz. System accuracy. The indicated level on the plot should be 6 dB
+/- 3 dB from the limit line. Time of Measurement: 3/1/2021 11:51:31 AM
RE102: 8 - 30 MHz, 29.5 MHz. System accuracy. The indicated level on the plot should be 6
dB +/- 3 dB from the limit line. Time of Measurement: 3/1/2021 11:51:53 AM
0
5
10
15
20
25
30
35
40
10 M 15 M 20 M 25 M 30 M8 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft < 25 m Nose-to-Tail
-10
-5
0
5
10
15
20
25
30
35
40
10 M 15 M 20 M 25 M 30 M8 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft < 25 m Nose-to-Tail
25
RE102: 120 - 200 MHz, 197 MHz. System accuracy. The indicated level on the plot should be
6 dB +/- 3 dB from the limit line. Time of Measurement: 3/1/2021 12:04:32 PM
RE102: 400 - 1000 MHz, 990 MHz. System accuracy. The indicated level on the plot should be
6 dB +/- 3 dB from the limit line. Time of Measurement: 3/1/2021 12:34:19 PM
10
15
20
25
30
35
40
45
50
120 M 130 M 140 M 150 M 160 M 170 M 180 M 190 M 200 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft < 25 m Nose-to-Tail
10
15
20
25
30
35
40
45
50
55
60
400 M 500 M 600 M 700 M 800 M 900 M 1 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft < 25 m Nose-to-Tail
26
RE102: 1 - 2 GHz, 1.95 GHz. System accuracy. The indicated level on the plot should be 6 dB
+/- 3 dB from the limit line. Time of Measurement: 3/1/2021 1:11:31 PM
RE102: 12 - 18 GHz, 17.5 GHz. System accuracy. The indicated level on the plot should be 6
dB +/- 3 dB from the limit line. Time of Measurement: 3/1/2021 1:12:36 PM
20
25
30
35
40
45
50
55
60
65
70
1 G 1.2 G 1.4 G 1.6 G 1.8 G 2 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft < 25 m Nose-to-Tail
40
45
50
55
60
65
70
75
80
85
90
12 G 13 G 14 G 15 G 16 G 17 G 18 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft < 25 m Nose-to-Tail
27
3.1.2.3 RE102 Ambient Scans
The following scans are performed to measure the conditions in the shielded room with the EUT
turned off. Measured levels should be at least 6 dB below the MIL-STD-461G limit.
RE102: 2 - 30 MHz Ambient. Time of Measurement: 3/1/2021 11:55:16 AM
0
5
10
15
20
25
30
35
40
45
50
2 M 3 M 5 M 10 M 20 M 30 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
28
RE102: 30 - 200 MHz Ambient. Antenna polarity: Vertical. Time of Measurement: 3/1/2021
12:07:07 PM
RE102: 30 - 200 MHz Ambient. Antenna polarity: Horizontal. Time of Measurement: 3/1/2021
12:08:20 PM
0
5
10
15
20
25
30
35
40
45
50
55
60
40 M 60 M 80 M 100 M 120 M 140 M 160 M 200 M30 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
0
5
10
15
20
25
30
35
40
45
50
55
60
40 M 60 M 80 M 100 M 120 M 140 M 160 M 200 M30 M
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Helicopter Fixed-Wing Aircraft < 25 m Nose-to-Tail Fixed-Wing Aircraft >= 25 m Nose-to-Tail
29
RE102: 200 - 1000 MHz Ambient. Antenna polarity: Vertical. Time of Measurement: 3/1/2021
12:38:02 PM
RE102: 200 - 1000 MHz Ambient. Antenna polarity: Horizontal. Time of Measurement:
3/1/2021 12:41:45 PM
10
15
20
25
30
35
40
45
50
55
60
65
70
200 M 300 M 400 M 500 M 600 M 700 M 800 M 1 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
10
15
20
25
30
35
40
45
50
55
60
65
70
200 M 300 M 400 M 500 M 600 M 700 M 800 M 1 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
30
RE102: 1 - 2 GHz Ambient. Antenna polarity: Vertical. Time of Measurement: 3/1/2021
1:15:44 PM
RE102: 1 - 2 GHz Ambient. Antenna polarity: Horizontal. Time of Measurement: 3/1/2021
1:23:40 PM
20
25
30
35
40
45
50
55
60
65
70
75
80
1 G 1.2 G 1.4 G 1.6 G 1.8 G 2 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
20
25
30
35
40
45
50
55
60
65
70
75
80
1 G 1.2 G 1.4 G 1.6 G 1.8 G 2 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
31
RE102: 2 - 18 GHz Ambient. Antenna polarity: Vertical. Time of Measurement: 3/1/2021
1:19:00 PM
RE102: 2 - 18 GHz Ambient. Antenna polarity: Horizontal. Time of Measurement: 3/1/2021
1:26:55 PM
30
40
50
60
70
80
90
100
2 G 4 G 6 G 8 G 10 G 12 G 14 G 18 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
30
40
50
60
70
80
90
100
2 G 4 G 6 G 8 G 10 G 12 G 14 G 18 G
Frequency (Hz)
Le
vel (d
Bµ
V/m
)
Peak Fixed-Wing Aircraft >= 25 m Nose-to-Tail Fixed-Wing Aircraft < 25 m Nose-to-Tail Helicopter
32
Additional scans were taken using a real-time spectrum analyzer to observe the spectrum of
emissions when the transponder was transmitting. The purpose of this was to ensure no out-of-
band emissions are present.
700 – 715 MHz band
