DRAFT ETR J01 Product Description (V1.4) CJM.V1.4

J01 FAA-E-7868

10/12/2018 22 AUG 2018, V 1.4

DEPARTMENT OF TRANSPORTATION

FEDERAL AVIATION ADMINISTRATION

PRODUCT DESCRIPTION (PD)

NEXCOM II Emergency Transceiver (ET)

Technical Operations, ATO ATC Communications Directorate

DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.

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RECORD OF CHANGES

Revision Date Action

0.1 18 FEB 2016 Initial Draft

0.2 15 MAY 2016 Implement reviewer comments

In depth review by WJHTC ANG-E62 (A/G Comm) and AJW-1C4 (Spectrum)

0.3 31 MAY 2016 Implement reviewer comments

0.4 28 FEB 2017 Interim Draft

0.5 24 MAR 2017 Implement Program Office comments

0.6 20 JUN 2017 Added VRTM, addressed Stakeholder comments

1.0 31 AUG 2017 Initial Release

1.1 31 MAR 2018 Addressed comments from the Program Office and Second Level Engineering

1.2 31 MAY 2018 Removed unreferenced standards

1.3 1 JUN 2018 Updated ET naming convention as per Program Office direction

1.4 22 AUG 2018 Updated MDT Operating System and Browser to current FAA products, clarified carry case requirement.

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TABLE OF CONTENTS

1 SCOPE

1.1 Identification

1.2 System Overview

2 APPLICABLE DOCUMENTS

2.1 Government Documents

2.1.1 Specifications

2.1.2 Standards

2.1.3 Other Government Documents

2.2 Non-Government Documents

2.3 Documentation Sources

2.3.1 FAA Documents

2.3.2 Military and Federal Documents

2.3.3 Reserved

2.3.4 FCC Documents

2.3.5 Reserved

2.3.6 IEEE/ANSI Documents

2.3.7 Reserved

2.3.8 ETSI Documents

2.3.9 Reserved

2.3.10 Reserved

2.3.11 Reserved

2.3.12 Reserved

3 REQUIREMENTS

3.1 Definitions

3.1.1 “Shall”

3.1.2 “Should”

3.1.3 “Will”

3.2 Radio Requirements

3.2.1 Radio Functions and Software Requirements

3.2.1.1 Modes of Operation

3.2.1.2 Tuning Ranges

3.2.1.3 DSB-AM Modulation Method

3.2.1.4 Firmware and Processor Requirements

3.2.1.5 Ancillary Equipment

3.2.2 Performance Requirements

3.2.2.1 Receiver Function Requirements

3.2.2.2 Transmitter Function Requirements

3.2.2.3 Antenna Function Requirements

3.2.3 Radio Control, Monitoring, and Reporting

3.2.3.1 Radio Control

3.2.3.2 Radio Control Parameters

3.2.3.3 Radio Query Parameters

3.2.3.4 Radio Monitoring and Reporting

3.2.3.5 Reserved

3.2.3.6 Vendor Built-in Test (BIT)

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3.3 Interfaces

3.3.1 Radio Interfaces

3.3.1.1 Radio Frequency (RF) Connectors

3.3.1.2 Reserved

3.3.1.3 Receiver Interface

3.3.1.4 Transmitter Interface

3.3.1.5 Transmitter Microphone Connector

3.3.1.6 Receiver Headset Connector

3.3.2 Additional Connectors

3.3.2.1 MDT Connector

3.3.2.2 Receiver Reference Frequency Monitor Connector

3.4 Construction Requirements

3.4.1 Physical Requirements

3.4.1.1 Workmanship

3.4.1.2 Equipment Size

3.4.1.3 Equipment Weight

3.4.1.4 Nameplates

3.4.1.5 Reserved

3.4.1.6 Reserved

3.4.1.7 Reserved

3.4.1.8 Thermal Protection

3.4.1.9 Shock and Vibration Protection

3.4.1.10 Grounding, Bonding, and Shielding

3.4.1.11 Acoustical Noise Criteria Requirement

3.4.1.12 Materials, Processes, and Parts

3.4.1.13 Safety

3.4.1.14 Human Performance/Human Engineering

3.4.1.15 Removable Parts, Mating Connectors, and Interface Cables

3.4.1.16 Test Points

3.4.1.17 Controls

3.4.1.18 Radio Identification (ID) Numbering

3.4.1.19 Radio Case

3.4.2 Electrical Requirements

3.4.2.1 Power Supply / Battery Charger Input Power Requirements

3.4.2.2 Reverse Polarity Protection

3.4.2.3 Circuit Protection

3.4.2.4 Loss of Input Voltage

3.4.2.5 Battery

3.4.3 Environmental Conditions

3.4.3.1 Thermal Design Requirements

3.4.3.2 Operating Conditions

3.4.3.3 Non-Operating Conditions

3.4.3.4 Reserved

3.4.4 Electromagnetic Compatibility Requirements

3.4.5 FCC Equipment Certification

3.5 Quality Factors

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3.5.1 Reliability

3.5.1.1 Mean Time Between Failures

3.5.2 Maintainability

3.5.2.1 Mean Time To Repair

3.5.2.2 Periodic Maintenance

3.5.3 Service Life

4 QUALITY ASSURANCE PROVISIONS

4.1 Testing Conditions

4.1.1 Receiver Test Signals and Conditions

4.1.1.1 Test Signal Sources

4.1.1.2 Rated Desired Signal

4.1.1.3 Standard Desired Signal

4.1.1.4 Standard Undesired Signal

4.1.1.5 Squelch Condition For Test

4.1.1.6 Rated Audio Output Power

4.1.1.7 Standard Audio Output Power

4.1.1.8 Rated Audio Band

4.1.1.9 Reserved

4.1.2 Transmitter Test Signals and Conditions

4.1.2.1 Coaxial Termination

4.1.2.2 Signal Sources

4.1.2.3 Standard Test Signal

4.1.2.4 Rated Output Power

4.1.3 Test Frequencies

4.1.4 Normal Load

4.2 Tests

4.2.1 Electromagnetic Compatibility Tests

4.3 Verification Methods and Verification Requirements Traceability Matrix (VRTM)

4.4 Reliability Modeling and Prediction Data

5 PREPARATION FOR DELIVERY

6 NOTES

6.1 Notes on Information Items

6.2 Applicable Definitions

6.2.1 Very High Frequency (VHF)

6.2.2 Ultra High Frequency (UHF)

6.2.3 Mean Time Between Failures (MTBF)

6.2.4 Mean Time To Repair (MTTR)

6.2.5 Reserved

6.2.6 Transmitter Duty Cycle

6.2.7 Modular Construction

6.2.8 Line Replaceable Unit (LRU)

6.2.9 Adjacent Channel Emissions

6.2.10 Transmitter Spectral Mask

6.2.11 Reserved

6.2.12 Initialization

6.2.13 Factory Reset

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6.2.14 Warm Reset

6.2.15 Reserved

6.2.16 Non-Volatile Memory

6.2.17 Equipment Failure

6.2.18 Reserved

6.2.19 Reserved

6.2.20 Reserved

6.2.21 Reserved

6.2.22 Reserved

6.2.23 Maintenance Data Terminal (MDT)

6.2.24 MDT Interface Software

6.2.25 Interface

6.2.26 Degraded Performance

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LIST OF TABLES

Table 3-1 Tuning Ranges Table 3-2 Receiver Selectivity Profile Table 3-3 Receiver Undesired Signal Table 3-4 Receiver Intermodulation Undesired Signals Table 3-5 Receiver Audio Frequency Response Audio Bands Table 3-6 Receiver Collocation Cases Table 3-7 Receiver Rejection of Signals Outside the Band Undesired Signal Cases Table 3-8 Receiver Automatic Gain Control (AGC) Stabilization Undesired Signal Table 3-9 Transmitter Distortion Audio Input Signal Ranges Table 3-10 Transmitter Back Intermodulation Cases Table 3-11 Transmitter Adjacent Channel Power Mask Table 3-12 Typical MDT Hardware/Software Table 3-13 Minimum Required Control Parameter Set Table 3-14 Minimum Desired Control Parameter Set Table 3-15 Minimum Required Query Parameter Set Table 3-16 Receiver Interface Connector Table 3-17 Transmitter Interface Connector Table 3-18 Power Supply/Battery Charger Current Limits Table 3-19 Operating Conditions Table 3-20 Non-Operating Conditions Table 4-1 Rated Audio Bands Table 4-2 Test Frequencies (MHz) viii

LIST OF FIGURES

Figure 3-1 Illustration of Normal, Alert, and Alarm Range for a Parameter Figure 6-1 ET Transmitter Spectral Mask

LIST OF APPENDICES

Appx A List of Acronyms A-1 Appx B Verification Requirements Traceability Matrix (VRTM) B-1

1 SCOPE

1.1 Identification

This document contains the Product Description (PD) for the Next Generation Air/Ground (A/G) Communications (NEXCOM) System UHF/VHF Emergency Transceiver (ET) equipment, to be used for A/G voice communications. The ET will be implemented as a portable radio.

The ET will be a commercial-off-the-shelf (COTS) or non-developmental item (NDI) device which complies with all the requirements contained herein. The ET will be an independent radio communication device capable of providing standalone operation. The ET will operate in two radio frequency (RF) ranges, Very High Frequency (VHF) and Ultra High Frequency (UHF). An important characteristic of the ET is interference protection from other collocated ETs. The capability to operate in close proximity to other ETs with minimal radio interference is very important.

1.2 System Overview

The purpose of the ET is to provide emergency Air/Ground communication capability for Air Traffic Control (ATC) operations during catastrophic failure of the normal radio communication system. Communication failure might be experienced during loss of ATC facility power, or failure of inter/intra facility connectivity to the Air/Ground radio communications equipment. The ET provides emergency radio communication during those times that a facility must be abandoned for events that could include fires, earthquakes, bomb threats, or severe weather. The ET provides the Air/Ground communication capability for at least the first critical 60 minutes after these events occur.

The ET will allow for continuous operation when its power supply is plugged into a 120 VAC power source. It is highly desirable for the ET to support operation from a 12 VDC power source.

The ET will operate using the current analog 25 kHz double sideband-amplitude modulation (DSB-AM) waveform with the capability of operating in the 8.33 kHz International Civil Aviation Organization (ICAO) defined Mode for the VHF radio. This PD covers only the ground-based radio equipment to be procured by the FAA. The equipment specified herein is intended for use as the Federal Aviation Administration (FAA) portable transceivers for emergency air/ground radio communication at all Air Traffic Control Towers (ATCT) and Terminal Radar Approach Control (TRACON) facilities.

2 APPLICABLE DOCUMENTS

2.1 Government Documents

The following documents form a part of this PD and are applicable to the extent specified here. In case of conflict between the documents referenced here and the contents of this PD, the contents of this PD take precedence.

2.1.1 Specifications

FAA: Federal Aviation Administration FAA-G-2100H Electronic Equipment, General Requirements. May 2005.

HF-STD-001 Human Factors Design Standard (HFDS). May 2012.

2.1.2 Standards

FAA: Federal Aviation Administration

FAA-STD-019E Lightning and Surge Protection, Grounding, Bonding and Shielding Requirements for Facilities and Electronic Equipment. December 2005.

FAA-STD-025F Preparation of Interface Documentation. November 2007.

Military:

MIL-STD-461G Requirements for The Control of Electromagnetic Interference Characteristics of

Subsystems and Equipment. December 2015.

MIL-STD-810G

Change 1

Department of Defense Test Method Standard. April 2014.

MIL-HDBK-454B

Notice 1

General Guidelines for Electronic Equipment. December 2012.

MIL-HDBK-217F

Change Notice 2

Reliability Prediction of Electronic Equipment. February 1995.

2.1.3 Other Government Documents

FCC: Federal Communications Commission 47 CFR Part 2 Frequency Allocations and Radio Treaty Matters; General Rules and

Regulations. October 2015.

47 CFR Part 15 Radio Frequency Devices. October 2015.

47 CFR Part 87 Aviation Services. October 2015.

2.2 Non-Government Documents

IEEE/ANSI: Institute of Electrical and Electronics Engineers/ American National Standards Institute

C62.41.2-2002 C62.41.2-2002, IEEE Recommended Practice on Characterization of Surges in Low Voltage (1000 V and Less) AC Power Circuits. 2002.

C62.45-2002 IEEE Recommended Practice on Surge Testing for Equipment Connected to Low-Voltage (1000 V and Less) AC Power Circuits. 2002.

ETSI: European Telecommunications Standards Institute

EN-300-676-1

(V1.5.2)

Ground-based VHF Hand-Held, Mobile and Fixed Radio Transmitters, Receivers and Transceivers for the VHF Aeronautical Mobile Service Using Amplitude Modulation; Part 1: Technical Characteristics and Methods of Measurement.

March 2011.

2.3 Documentation Sources

2.3.1 FAA Documents

Copies of FAA specifications, standards, and publications may be obtained from the NEXCOM Contracting Officer, FAA, 800 Independence Avenue SW, Washington, DC 20591. Requests must clearly identify the desired material by number and state the intended use of the material.

2.3.2 Military and Federal Documents

Single copies of unclassified military and federal specifications, standards, and publications may be obtained by writing the Naval Publications and Forms Center, 5801 Tabor Avenue, Philadelphia, PA 19120, or by calling (215) 697-3321 Monday through Friday, 8:00 a.m. to 4:30 p.m. Eastern Standard Time (EST). The following Department of Defense Web site offers military publications for download: http://quicksearch.dla.mil/. The following Web page offers guidance in identifying, locating, or acquiring U.S. military publications and documents:

http://www.loc.gov/rr/news/someplaces.html.

2.3.3 Reserved

2.3.4 FCC Documents

Copies of 47 CFR, Part 2, Part 15 and Part 87 may be obtained from the Federal Communica-tions Commission (FCC), 445 12th Street SW, Washington, DC 20554, or downloaded from the Web at http://www.ecfr.gov/cgi-bin/text-idx?c=ecfr&tpl=/ecfrbrowse/Title47/47cfrv1_02.tpl

2.3.5 Reserved

2.3.6 IEEE/ANSI Documents

Copies of Institute of Electrical and Electronics Engineers (IEEE) documents may be requested as follows: by mail at IEEE Customer Service, 445 Hoes Lane, Piscataway, NJ 08854-4141; by phone

(800) 701-4333 (in the United States and Canada) or (732) 981-0060 (outside the United States and Canada); or via the following Web site: http://www.ieee.org/web/standards/ home/index.html. The American National Standards Institute (ANSI) Web site is located at http://www.ansi.org.

http://quicksearch.dla.mil/ http://www.loc.gov/rr/news/someplaces.html http://www.ecfr.gov/cgi-bin/text-idx?c=ecfr&tpl=/ecfrbrowse/Title47/47cfrv1_02.tpl http://www.ieee.org/web/standards/home/index.html http://www.ieee.org/web/standards/home/index.html http://www.ansi.org/

2.3.7 Reserved

2.3.8 ETSI Documents

Copies of European Telecommunications Standards Institute (ETSI) documents may be obtained from the ETSI Secretariat at F-06921 Sophia Antipolis CEDEX, France, or from the ETSI Web site at http://www.etsi.org/WebSite/Standards/Standard.aspx.

2.3.9 Reserved

2.3.10 Reserved

2.3.11 Reserved

2.3.12 Reserved

http://www.etsi.org/WebSite/Standards/Standard.aspx

3 REQUIREMENTS

3.1 Definitions

3.1.1 “Shall” When used in this PD, the word “shall” refers to an explicit binding requirement of a system component or the complete system.

3.1.2 “Should” When used in this PD, the word “should” refers to a desired but non-mandatory characteristic of a system component or the complete system.

3.1.3 “Will” When used in this PD, the word “will” is used to express a declaration of purpose on the part of the Government. It may also be necessary to use “will” in cases when simple futurity is required.

3.2 Radio Requirements

The technical characteristics described in this PD are for the ground based UHF/VHF ET radio equipment. The ET is considered to be a Line Replaceable Unit (LRU). The following components are also considered LRUs; Headset, Microphone, Antenna, Power Supply/Battery Charger, and Battery.

a) The radio equipment shall1 be implemented as multiband UHF/VHF transceivers, no individual UHF and VHF implementations will be considered.

b) The radio equipment shall2 be implemented as individual transceivers, no individual receivers and transmitters will be considered.

c) All radio requirements shall3 be met under all operational modes, conditions, and over the frequency range(s) specified in this PD.

3.2.1 Radio Functions and Software Requirements

3.2.1.1 Modes of Operation

a) The radio equipment shall4 operate in DSB-AM (see section 3.2.1.3) using 25 kHz channel spacing.

b) The VHF radio equipment shall5 operate in DSB-AM using 8.33 kHz channel spacing.

c) The VHF radio equipment shall6 be user configurable to allow the equipment to operate in either 25 kHz DSB-AM or 8.33 kHz DSB-AM channel spacing configuration.

d) The VHF radio equipment, when configured for 8.33 kHz channel spacing, shall7 operate in compliance with ETSI specification EN-300-676 (excluding sections 4.3 and 5).

Note: If a requirement in this PD conflicts with a requirement in ETSI specification EN-300-676, the requirement of this PD applies.

3.2.1.2 Tuning Ranges

a) The radio equipment shall8 be capable of tuning and operating at all frequencies within the relevant band as defined in Case A of Table 3-1 below.

b) The VHF radio equipment should1 be capable of tuning and operating at all frequencies within the relevant band as defined in Case B of Table 3-1 below.

c) The VHF radio equipment should2 have a user selectable highest tunable frequency between

137.000 MHz and 150.000 MHz that is selectable in 25 kHz steps, or require an additional user confirmation for frequencies selected above 136.975MHz.

d) The VHF radio equipment should3 have a user selectable highest tunable frequency between

137.000 MHz and 150.000 MHz that is selectable in 8.33 kHz steps, or require an additional user confirmation for frequencies selected above 136.975MHz.

Table 3-1 Tuning Ranges

Case VHF (MHz) UHF (MHz) 25 kHz Channel Spacing 8.33 kHz Channel Spacing 25 kHz Channel Spacing

A 118.000 to 136.975 118.000 to 136.975 225.000 to 399.975 B 118.000 to 150.000 118.000 to 150.000 N/A

3.2.1.3 DSB-AM Modulation Method

a) The radio modulation method shall9 be A3E DSB-AM in accordance with FCC regulations in

47 CFR, Part 2, Frequency Allocations and Radio Treaty Matters; General Rules and Regulations, October, 1998; and Part 87, Aviation Services, October, 1998; and the NTIA Manual of Regulations and Procedures for Federal Radio Frequency Management (chapter 6, paragraph 6.3).

3.2.1.4 Firmware and Processor Requirements

a) The radio equipment shall10 use no more than 75 percent of non-volatile memory (as defined in section 6.2.16, Non-Volatile Memory) for storage under worst-case conditions

b) The radio equipment shall11 use no more than 75 percent of random-access memory (RAM), under worst-case conditions

c) Processor utilization shall12 peak at 75 percent or less.

d) The radio equipment should4 have an internal clock for event logging.

e) The radio equipment shall13 be software/firmware upgradeable.

f) The radio equipment shall14 allow software uploads.

g) The radio equipment shall15 revert to the previous version of software and perform an automatic restart and return to the last operational state if a software upload is not completed successfully.

h) The radio equipment shall16 send a control reply message indicating the reason for rejection if a software upload is rejected.

i) The vendor shall17 specify the type(s) of non-volatile storage memory used, the minimum memory retention time for each component, and the procedures to follow to extend this time

j) All control parameters shall18, upon initialization (as defined in section 6.2.12), assume their default values (as defined in section 3.2.3.2, Radio Control Parameters).

k) The radio equipment shall19 be fully operational within 10 seconds of power switch activation.

l) The radio equipment shall259, upon power cycling, resume operation using the control parameter set that was in effect before the power cycle.

3.2.1.5 Ancillary Equipment

3.2.1.5.1 Battery Pack and Power Supply/Battery Charger

a) The ET shall20 be capable of operating from a battery.

b) The ET shall21 have a rechargeable battery.

c) The ET shall22 have a user removable/replaceable battery.

d) The ET shall23 have a power supply/battery charger.

e) The power supply/battery charger should5 be integrated into the ET.

f) The power supply/battery charger function should6 be commercially available.

3.2.1.5.2 Audio Components

a) The ET shall24 include: (1) an internal speaker, (2) a headset connector, and (3) a microphone connector with a push-to-talk (PTT) interface.

b) The ET shall25 include a dual ear cup (over-the-ear) noise attenuating headset with an integral microphone and PTT switch.

c) The ET headset shall26 provide a minimum of 23 dB of attenuation to ambient noise.

d) The ET shall27 include a handheld microphone with PTT switch that is separate from the headset and integral microphone specified in b) above.

e) The headset and microphone interface shall28 prevent the connection of both the headset and integral microphone described in b) above, and the handheld microphone described in d) above, at the same time.

f) The headset and microphone interface should7 be a common connector (headset with mic, instead of separate mic and headset connections).

3.2.1.5.3 Antenna

a) The ET shall29 include a single antenna operable in both the VHF and UHF frequency ranges specified in paragraph 3.2.1.2.

b) The antenna shall30 be removable and replaceable by the user.

3.2.1.5.4 Carrying Case

a) The ET shall31 be equipped with a carrying case, bag, backpack, or similar apparatus to allow for easy transportation of all devices required for operation.

3.2.2 Performance Requirements

3.2.2.1 Receiver Function Requirements

All ET receiver function performance requirements will be validated using standard test signals as described in sections 4.1.1, 4.1.2, and 4.1.3 of this PD unless otherwise stated.

3.2.2.1.1 Receiver Audio Interfaces

a) The receiver shall32 provide an analog audio output to be used with a headset (see section

3.3.1.6).

b) The analog audio output level shall33 be controllable from the front panel.

c) The receiver shall34 have a speaker utilizing the analog audio circuit.

d) The receiver speaker shall35 be enabled or disabled via a selectable parameter available on the

ET front panel.

3.2.2.1.2 Receiver Sensitivity

a) The receiver RF input shall36 have 50 ohms characteristic impedance.

b) The receiver shall37 produce a SINAD of 10 dB or greater at the audio output when a standard desired signal of no more than −102 dBm is present at the receiver RF input.

Note: A standard desired signal of −102 dBm is herein defined as the rated desired signal (see section 4.1.1.2). SINAD is defined as the ratio of (Signal plus Noise plus Distortion) to (Noise plus Distortion).

3.2.2.1.3 Reserved

3.2.2.1.4 Receiver Selectivity

a) The selectivity of the receiver shall38 conform to Table 3-2 Cases A and B below with respect to the tuned channel center frequency across the entire frequency band.

Note: VHF receivers are required to meet all the conditions in Cases A and B.

UHF receivers are required to meet the conditions in Cases A and B for 25 kHz channel spacing.

b) The selectivity of the receiver should8 conform to Table 3-2 Case C below with respect to the tuned channel center frequency across the entire frequency band.

Note: It is desired that VHF receivers meet all the conditions in Case C.

It is desired that UHF receivers meet the conditions in Cases C for 25 kHz channel spacing.

Table 3-2 Receiver Selectivity Profile

Case Level DSB-AM Bandwidth (25 kHz Channel Spacing)

DSB-AM Bandwidth (8.33 kHz Channel Spacing)

A −6.0 dB ± 9 kHz Minimum ± 3.5 kHz Minimum B −60.0 dB ± 25 kHz Maximum ± 8.33 kHz Maximum C −80.0 dB ± 50 kHz Maximum ± 25 kHz Maximum

3.2.2.1.5 Receiver Image Rejection

a) The VHF receiver shall39 not have image frequencies within the 118.000 MHz to 136.975

MHz band.

b) The VHF receiver should9 not have image frequencies within the 136.975 MHz to 150.000

MHz frequency band.

c) The UHF receiver should10 not have image frequencies within the 225.000 MHz to 399.975

MHz frequency band

d) The sensitivity requirements of section 3.2.2.1.2 shall40 not be degraded by more than 3 dB in the presence of an undesired signal as specified in Table 3-3 below for the relevant receiver type.

Table 3-3 Receiver Undesired Signal

Case Undesired Modulation

Undesired Signal Level (dBm) Undesired Frequencies

VHF Continuous Wave −42 All spurious response frequencies including receiver image frequencies

UHF Continuous Wave −42 All spurious response frequencies including receiver image frequencies

3.2.2.1.6 Receiver Distortion

3.2.2.1.6.1 Receiver Intermodulation

a) The sensitivity requirements defined in section 3.2.2.1.2 shall41 not be degraded by more than

3 dB in the presence of two undesired signals as defined in Case A of Table 3-4 below, with frequencies chosen such that one of the 3rd order products is located on the receiver operating frequency.

b) The sensitivity requirements defined in section 3.2.2.1.2 shall42 not be degraded by more than 3 dB in the presence of two undesired signals as defined in Case B of Table 3-4 below with frequencies chosen such that one of the 3rd order products is located on the receiver operating frequency.

c) The sensitivity requirements defined in section 3.2.2.1.2 shall43 not be degraded by more than 3 dB in the presence of two undesired signals as defined in Case C of Table 3-4 below with the frequencies of the undesired signals offset from the receiver operating frequency by +2.0 MHz and +4.0 MHz, or –2.0 MHz and –4.0 MHz, respectively.

d) The sensitivity requirements defined in section 3.2.2.1.2 shall44 not be degraded by more than 3 dB in the presence of two undesired signals as defined in Case D of Table 3-4 below with frequencies chosen such that the 2nd order products are located on the chosen UHF receiver operating frequency.

Note: VHF and UHF receivers are required to meet Cases A through C. Only UHF receivers are required to meet Case D.

Table 3-4 Receiver Intermodulation Undesired Signals

Case Undesired Signal #1 Modulation

Undesired Signal #2 Modulation

Undesired Signal Levels

(dBm)

Undesired Frequency Band

(MHz)

A FM, 404 Hz tone with 75 kHz Deviation

FM - 404 Hz tone with 75 kHz Deviation −8 87.5 to 107.9

B FM, 404 Hz tone with 75 kHz Deviation CW +2 87.5 to 107.9

C DSB-AM, 404 Hz tone at 90%

DSB-AM – 404 Hz tone at 90% −33 Operating Band

D DSB-AM, 404 Hz tone at 30% CW +2 118.000 to 136.975

3.2.2.1.6.2 Receiver Cross Modulation

a) The sensitivity requirements defined in section 3.2.2.1.2 shall45 not be degraded by more than

2 dB in the presence of a standard undesired signal separated by ±0.5 MHz and at a level 70.0 dB above the rated desired signal.

b) The sensitivity requirements defined in section 3.2.2.1.2 shall46 not be degraded by more than 2 dB in the presence of a standard undesired signal separated by ±1.0 MHz and at a level 75.0 dB above the rated desired signal.

c) The sensitivity requirements defined in section 3.2.2.1.2 shall47 not be degraded by more than 2 dB in the presence of a standard undesired signal separated by ±1.5 MHz and at a level 80.0 dB above the rated desired signal.

Note: A standard undesired signal is defined in section 4.1.1.4.

3.2.2.1.7 Receiver Frequency Tolerance

a) The frequency tolerance of the receiver reference frequency shall48 be within ±2.5 ppm

(±0.00025%) of its reference value for a period of one year following alignment over the full frequency range specified in section 3.2.1.2 and the temperature range specified in section

3.4.3.2 (Operating Conditions).

b) The reference used to generate the receiver operating frequency shall49 have a tuning adjustment to compensate for aging during the operational life of the equipment.

c) The receiver operating frequency shall50 be adjustable to within ±2.5 ppm (±0.00025%) of the tuned channel center frequency.

d) If the receiver uses a different frequency reference than the transmitter, the ET shall51 provide a sample of the reference frequency, with a signal level of at least -20 dBm, to an external 50 ohm monitor port to allow for reference frequency measurement.

3.2.2.1.8 Receiver Audio Output Control

a) The analog audio acoustic power provided by the speaker at a distance of 1 meter shall52 be adjustable to include the range between 0 dBSPL and 90 dBSPL.

b) The analog audio acoustic power provided by the headset shall53 be adjustable to include the range between 0 dBSPL and 90 dBSPL.

c) The analog audio acoustic power provided by the headset shall54 not produce sound pressure levels in excess of 115 dBSPL (continuous, free field) at the user’s ear.

d) The analog audio acoustic power provided by the headset shall55 not produce sound pressure levels in excess of 125 dBSPL (impulse, free field) at the user’s ear.

e) The audio output level of the receiver shall56 be adjustable in steps no greater than 0.5 dB.

f) The audio output level of the receiver should11 be continuously adjustable.

3.2.2.1.9 Receiver Audio Level Regulation

a) The audio output level of the receiver (adjusted for rated audio output power) shall57 not vary more than ±1.0 dB as a standard desired signal modulation is increased from 30 to 100 percent.

Note: The rated audio output power is defined in section 4.1.1.6.

3.2.2.1.10 Receiver Audio Automatic Level Stabilization

a) The audio output level of the receiver (adjusted for standard audio output power) shall58 not vary by more than ±3 dB from a reference audio level for any standard desired signal between −98 dBm and −7 dBm.

Note: The reference audio level is measured with a −50 dBm standard desired signal. The standard audio output is defined in section 4.1.1.7.

3.2.2.1.11 Reserved

3.2.2.1.12 Reserved

3.2.2.1.13 Receiver Audio Distortion

a) The audio output shall59 not be distorted by more than 10 percent for 30 percent modulation with any RF input level between −67 dBm and −27 dBm, for any input tones within the rated audio band for the relevant channel spacing configuration.

b) The audio output shall60 not be distorted by more than 10 percent for 90 percent modulation with any RF input level between −67 dBm and −27 dBm, for any input tones within the rated audio band for the relevant channel spacing configuration.

Note: The rated audio band is defined in section 4.1.1.8.

3.2.2.1.14 Receiver Audio Frequency Response

a) The audio output level shall61 not vary by more than ±2.0 dB from the level achieved with a reference desired signal (see note) when the reference audio input frequency is varied within the rated audio band.

b) The audio output level shall62 decrease monotonically from the level achieved with a reference desired signal as the frequency increases between the ranges indicated by the high frequency rejection band in Table 3-5 below.

c) The audio output level shall63 be at least 20.0 dB down from the level achieved with a reference desired signal at frequencies indicated by the ultimate frequency rejection band of Table 3-5 below.

d) The audio output level shall64 decrease monotonically from the level achieved with a reference desired signal as the audio frequency decreases between the ranges indicated in the low frequency rejection band of Table 3-5 below, and be down at least 10.0 dB at 100 Hz.

Note: The reference desired signal is defined as a −102 dBm to –7dBm carrier, amplitude modulated with a 1004 Hz tone to a depth of 90 percent.

Table 3-5 Receiver Audio Frequency Response Audio Bands Channel Spacing (kHz)

Low Frequency Rejection Band

(Hz)

Audio Pass Band (Hz)

High Frequency Rejection Band

(Hz)

Ultimate Frequency Rejection Band

(Hz) 25 0 to 300 300 to 3000 3000 to 10000 10000+

8.33 0 to 350 350 to 2500 2500 to 10000 10000+

3.2.2.1.15 Receiver Squelch

3.2.2.1.15.1 Squelch Functionality

a) The squelch shall65 be based on a carrier to noise type system.

b) The squelch shall66 have a manual enable/disable control for operator adjustment located on the front panel.

c) The squelch shall67 have a manual threshold control for operator adjustment located on the front panel.

d) The squelch shall68 be adjustable over an RF carrier range of −105 dBm to −80 dBm.

Note: The squelch function provides audio output muting, based on the squelch control setting, when a received signal is deemed to have unacceptable quality.

3.2.2.1.15.2 Reserved

3.2.2.1.15.3 Receiver Squelch Attack and Release Times

a) The squelch attack time shall69 not exceed 45 ms with any standard desired signal with an RF level between −102 dBm and −7 dBm.

b) The squelch attack time should12 not exceed 10 ms with any standard desired signal with an

RF level between −102 dBm and −7 dBm.

c) The squelch release time shall70 not exceed 35 ms.

3.2.2.1.16 Collocation

a) The sensitivity requirements defined in section 3.2.2.1.2 shall71 not be degraded by more than

7 dB in the presence of one other ET transmitter, set for 5 W AM Carrier and configured to be a standard undesired signal (see section 4.1.1.4) except with 90% AM modulation, when the transmit-receive frequency separation and RF path isolation are as defined in Table 3-6 below.

b) The sensitivity requirements defined in section 3.2.2.1.2 should13 not be degraded by more than 7 dB in the presence of two other ET transmitters, set for 5 W AM Carrier and configured to be a standard undesired signal (see section 4.1.1.4) except with 90% AM modulation, when the transmit-receive frequency separation and RF path isolation are as defined in Table 3-6 below.

Table 3-6 Receiver Collocation Cases Case RF Isolation (dB) Frequency Separation (MHz)

A 55 ≥ 0.9 B 45 ≥ 2.5

3.2.2.1.17 Receiver Adjacent Channel Rejection

a) The sensitivity requirements of section 3.2.2.1.2 shall72 not be degraded by more than 3 dB in the presence of a −63 dBm adjacent channel (centered on ±25 kHz or ±8.33 kHz for VHF or ±25 kHz for UHF) undesired signal, AM modulated 90 percent with a 404 Hz tone.

3.2.2.1.18 Receiver Rejection of Signals Outside the Operating Bands

a) The sensitivity requirements of section 3.2.2.1.2 shall73 not be degraded by more than 2 dB in the presence of an undesired signal as defined in Case A of Table 3-7 below.

b) The sensitivity requirements of section 3.2.2.1.2 should14 not be degraded by more than 2 dB in the presence of an undesired signal as defined in Case B of Table 3-7 below.

Table 3-7 Receiver Rejection of Signals Outside the Band Undesired Signal Cases Case Band Level Modulation Frequency Range

A VHF −10 dBm Continuous Wave All frequencies below and above 115 to

140 MHz, respectively

UHF −10 dBm Continuous Wave All frequencies below and above 222 to 403 MHz, respectively

B VHF −10 dBm Continuous Wave All frequencies below and above 115 to 153 MHz, respectively

3.2.2.1.19 Receiver Desired Signal Dynamic Range

a) The receiver shall74 achieve a SINAD of 10 dB or greater in the presence of any standard desired signal modulated 90 percent at any RF level ranging from –102 dBm up to –7 dBm.

b) The receiver shall75 not be blocked in the presence of any standard desired signal modulated

90 percent at any RF level up to +10 dBm.

c) The receiver shall76 not be damaged due to the presence of any standard desired signal, modulated to a depth of 90 percent at RF carrier levels up to +25 dBm, for a duration of at least 5 minutes.

Note: Blocking is defined as a 3 dB reduction in the audio level referenced to the audio level setting at the desired signal input of –7 dBm modulated 90 percent with a 1004 Hz tone.

3.2.2.1.20 Receiver Automatic Gain Control (AGC) Stabilization

a) The sensitivity requirements of section 3.2.2.1.2 shall77 not be degraded by more than a specified level not later than the required attack time after insertion of a specified undesired signal.

Note: The undesired signal, allowable degradation in sensitivity, and attack time are defined in Table 3-8 below.

b) The sensitivity requirements of section 3.2.2.1.2 shall78 be met not later than 150 ms after removal of an undesired signal as defined in Table 3-8 below.

Table 3-8 Receiver Automatic Gain Control (AGC) Stabilization Undesired Signal

Undesired Signal

Allowable Degradation in Sensitivity

(dB)

Required Attack Time (ms)

VHF +3 dBm carrier, continuous wave, ±2 MHz from the desired frequency 10 30

UHF 0 dBm carrier, continuous wave, ±3.1 MHz from the desired frequency 7 20

3.2.2.1.21 Receiver Internal Noise Level

a) The receiver audio output SINAD shall79 be 25 dB or greater in the presence of a −85 dBm standard desired signal.

3.2.2.1.22 Receive Signal Strength Indicator (RSSI)

a) The receiver should15 provide a Receive Signal Strength Indicator (RSSI).

3.2.2.1.23 Receiver Spurious Emissions

a) In the UHF and VHF range, spurious emissions (local oscillator and others) from the antenna port shall80 be in accordance with MIL-STD-461G, CE106, and in no case greater than -73 dBm.

3.2.2.2 Transmitter Function Requirements

All ET transmitter function performance requirements will be validated using standard test signals as described in sections 4.1.2 and 4.1.3 of this PD unless otherwise stated.

3.2.2.2.1 Transmitter Audio Interfaces

a) The transmitter shall81 provide an analog audio input to be used with a microphone (see section

3.3.1.4).

b) The transmission of the analog audio input shall82 be controlled via a push-to-talk microphone.

3.2.2.2.2 Reserved

3.2.2.2.3 Transmitter Distortion

a) The transmitter modulation distortion shall83 not exceed 10 percent root mean square (RMS) with the transmitter modulated at 90 percent with any audio signal as specified for 25 kHz channel spacing as defined in Case A in Table 3-9.

b) The VHF transmitter modulation distortion shall84 not exceed 10 percent RMS with the transmitter modulated at 90 percent with any audio signal as specified for 8.33 kHz channel spacing as defined in Case B in Table 3-9.

c) The transmitter modulation distortion should16 not exceed 10 percent root mean square (RMS) with the transmitter modulated at 90 percent with any audio signal as specified for 25 kHz channel spacing as defined in Case C in Table 3-9.

d) The VHF transmitter modulation distortion should17 not exceed 10 percent RMS with the transmitter modulated at 90 percent with any audio signal as specified for 8.33 kHz channel spacing as defined in Case D in Table 3-9.

Table 3-9 Transmitter Distortion Audio Input Signal Ranges

Case Channel Spacing (kHz)

Audio Frequency Range (Hz)

Audio Input Level (Vrms) (at ET Microphone Connector)

Sound Pressure Level (dBSPL)

(at Microphone1)

A 25 300 to 3000 Vendor to provide microphone output voltage level corresponding to Sound Pressure Level

B 8.33 350 to 2500 Vendor to provide microphone output voltage level corresponding to Sound Pressure Level

C 25 300 to 3000 Vendor to provide microphone output voltage range corresponding to Sound Pressure Level range

40−110

D 8.33 350 to 2500 Vendor to provide microphone output voltage range corresponding to Sound Pressure Level range

40−110

1 – All requirements apply to both the Headset Microphone and the Handheld Microphone.

3.2.2.2.4 Transmitter AM Modulation Level

a) The transmitter shall85 maintain the modulation level at ±10 percent of the reference level with any audio signal as specified for 25 kHz channel spacing as defined in Case A in Table 3-9.

The reference level is the modulation level measured with a 1004 Hz tone.

b) The VHF transmitter shall86 maintain the modulation level at ±10 percent of the reference level with any audio signal as specified for 8.33 kHz channel spacing as defined in Case B in Table 3-9. The reference level is the modulation level measured with a 1004 Hz tone.

c) The transmitter should18 maintain the modulation level at ±10 percent of the reference level with any audio signal as specified for 25 kHz channel spacing as defined in Case C in Table 3-9. The reference level is the modulation level measured with a 1004 Hz tone.

d) The VHF transmitter should19 maintain the modulation level at ±10 percent of the reference level with any audio signal as specified for 8.33 kHz channel spacing as defined in Case D in Table 3-9. The reference level is the modulation level measured with a 1004 Hz tone.

e) The transmitter shall87 prevent modulation levels that exceed 100 percent with any audio signal as specified for 25 kHz and 8.33 kHz channel spacings as defined in Cases A and B in Table 3-9.

f) The transmitter should20 prevent modulation levels that exceed 100 percent with any audio signal as specified for 25 kHz and 8.33 kHz channel spacings as defined in Cases C and D in Table 3-9.

g) The transmitter should21 prevent modulation levels that exceed 100 percent for a government furnished speech sample for 25 kHz and 8.33 kHz channel spacings with input audio levels as defined in Cases C and D in Table 3-9.

3.2.2.2.5 Transmitter RF Output Power

a) The transmitter shall88 operate at any power level for a load Voltage Standing Wave Ratio

(VSWR) up to and including 3.0:1.

b) The transmitter shall89 not suffer any damage nor suffer subsequent performance degradation, and meet all requirements after transmitting into a complex impedance of any magnitude and phase, including open and short circuit terminations.

c) The transmitter shall90 operate at a VSWR of 2.0:1 or less with no damage, with no part exceeding dissipation limits, and with no performance degradation.

d) The transmitter shall91 deliver not less than 50 percent of the set CW RF signal power into any impedance having a maximum VSWR of 3.0:1 at any phase angle.

e) The transmitter shall92 provide a High Output Power Mode and deliver a power level between 5W and 10W into a normal load (see section 4.1.4) when transmitting a CW signal across the relevant operating frequency range of the radio.

f) The transmitter shall93 provide a Low Output Power Mode and deliver a power level between 2W and 4W into a normal load (see section 4.1.4) when transmitting a CW signal across the relevant operating frequency range of the radio.

g) The transmitter should22 be adjustable in less than or equal to 1 dB steps over its full output power operating range.

3.2.2.2.5.1 Reserved

3.2.2.2.6 Transmitter Back Intermodulation

a) The amplitude of each radio frequency back intermodulation product shall94 be no greater than a specified level when the transmitter (unmodulated and set for rated output power) is keyed and an undesired signal, with frequency separation and signal level as defined in Table 3-10 below, is fed into the transmitter output connector.

Table 3-10 Transmitter Back Intermodulation Cases

Case Undesired Signal Definition Maximum

Intermodulation Product Level (dBc)

Signal Level (dBc)

Separation (MHz)

A −45 ±2.5 −58 B −55 ±0.9 −72

3.2.2.2.7 Transmitter Duty Cycle

a) The transmitter shall95 have the capability to operate at a 100 percent duty cycle at its maximum rated output power for at least 5 minutes.

3.2.2.2.8 Transmitter Spurious Emissions

a) Spurious emission levels shall96 be less than -90 dBc when the transmitter, set for rated power, is keyed without modulation into a normal load.

b) Spurious emission levels should23 be less than -110 dBc when the transmitter, set for rated power, is keyed without modulation into a normal load.

c) Spurious emissions levels of the UHF transmitter within the VHF band shall97 be less than -

110 dBc when the UHF transmitter, set for rated power, is keyed without modulation into a normal load.

Note: Spurious emissions exclude the harmonics specified in section 3.2.2.2.9.

3.2.2.2.9 Transmitter Harmonic Output

a) The level of each carrier harmonic shall98 be less than −70.0 dBc when the transmitter, set for rated power, is keyed without modulation into a normal load.

3.2.2.2.10 Transmitter Adjacent Channel Power

a) The transmitter first adjacent channel 25 kHz band-power, shall99 not exceed −40 dBc when it is modulated with a standard test signal and configured for 25 kHz channel spacing and rated output power.

b) The VHF transmitter first adjacent channel 8.33 kHz band-power shall100 not exceed −30 dBc when it is modulated with a standard test signal and configured for 8.33 kHz channel spacing and rated output power.

c) The transmitter adjacent channel 25 kHz band-power shall101 not exceed the limits as defined in Table 3-11 below when it is modulated with a standard test signal and configured for 25 kHz channel spacing and configured for rated output power.

d) The UHF transmitter adjacent channel 25 kHz band-power shall102 not exceed −120 dBc within the VHF band, as specified in this PD, when it is modulated with a standard test signal and configured for rated output power.

Note: See section 6.2.10 for a graphical representation of the transmitter spectral mask or Table 3-11 below for a tabular representation.

Table 3-11 Transmitter Adjacent Channel Power Mask Frequency Offset (MHz) Relative to the Carrier

Limit (dBc)

±0.00833 (VHF only) −30 ±0.025 −40

±(0.050 through 0.075) −65 ±(0.100 through 0.175) −70 ±(0.200 through 0.375) −75 ±(0.400 through 0.475) −92 ±(0.500 through 0.775) −100

All frequencies above +0.800 or below −0.800 −110

3.2.2.2.11 Transmitter Carrier-Induced Noise (Residual AM)

a) The carrier-induced audio noise level due to the radio transmitting a CW signal shall103 be at least

40.0 dB below the detected audio output when the carrier is modulated with a standard test signal.

Note: The detected audio bandwidth is defined in Table 4-1.

3.2.2.2.12 Transmitter Keying

a) The key signal shall104 be via a push-to-talk microphone connected directly to the ET front panel microphone input.

b) The transmitter shall105 continue to transmit while an active key signal is present.

c) The transmitter shall106 also be keyed using a Test PTT command through the MDT interface.

d) Active microphone key signals shall107 take priority over the MDT Test PTT command.

3.2.2.2.12.1 Transmit Key Time

a) The transmit key time shall108 not exceed 45 ms as measured from the application of a key signal to the time when the transmitter is at 90 percent of the full power level.

3.2.2.2.13 Transmitter Frequency Tolerance

a) The transmitter frequency tolerance shall109 be within ±2.5 ppm (±0.00025%) for any one year period following alignment over the full frequency range specified in section 3.2.1.2 and the temperature range specified in section 3.4.3.2.

b) The reference used to derive the transmitter operating frequency shall110 have a tuning adjustment adequate to compensate for aging during the operational life of the equipment.

c) The transmitter operating frequency shall111 be adjustable within ±2.5 ppm (±0.00025%) of the tuned channel.

3.2.2.3 Antenna Function Requirements

3.2.2.3.1 Antenna Characteristics

a) A single omnidirectional antenna shall112 be furnished with the ET that supports both frequency ranges specified in paragraph 3.2.1.2 herein.

b) A single omnidirectional antenna should24 be provided with a minimum gain of 0 dBi over both frequency ranges specified in paragraph 3.2.1.2 herein.

c) The length of the antenna shall113 not exceed 30 inches.

d) The antenna shall114 be stored on or within the ET.

e) The antenna voltage standing wave ratio (VSWR) shall115 not exceed 2.5:1 at any frequency specified in paragraph 3.2.1.2.

3.2.2.3.2 Antenna Receive/Transmit Port

a) A single connector shall116 be used for the ET antenna port for transmission and reception of both VHF and UHF signals.

b) The ET antenna port impedance shall117 be 50 ohms nominal.

3.2.3 Radio Control, Monitoring, and Reporting

a) The radio equipment shall118 allow control and monitoring by interface and interoperation with a Maintenance Data Terminal (MDT).

b) The radio equipment shall119 allow control and monitoring by interface and interoperation through a front panel interface.

Note: A front panel interface is defined as a touch panel or a display screen in conjunction with buttons and/or knobs.

c) Reserved

d) The radio equipment should25 record monitored parameters to an internal event log.

e) The radio equipment shall121 provide unsolicited indications of alert and alarm conditions via the MDT interface.

f) The radio equipment shall122 provide unsolicited indications of alert and alarm conditions via the front panel interface.

g) The radio equipment should26 provide distinct audible indications for alert, alarm, and fail conditions.

h) The radio equipment shall123 continue to operate without degradation in performance as specified in sections 3.2.2.1, Receiver Requirements and 3.2.2.2, Transmitter Requirements when the MDT is either connected or disconnected.

i) The radio equipment shall124 continue to operate without degradation in performance as specified in sections 3.2.2.1, Receiver Requirements and 3.2.2.2, Transmitter Requirements with an MDT connected and logged in.

j) The radio equipment shall125 continue to operate without degradation in performance as specified in sections 3.2.2.1, Receiver Requirements and 3.2.2.2, Transmitter Requirements when using the front panel interface.

k) The radio shall126 provide 10 or more presets to store commonly used frequencies.

l) The radio should27 provide 15 or more presets to store commonly used frequencies.

m) The radio equipment should89 record parameter changes and alert and alarm conditions to an internal event log.

3.2.3.1 Radio Control

3.2.3.1.1 Maintenance Data Terminal (MDT) Interface

The following requirements, which support the MDT operation, apply to the ET.

a) The radio equipment shall127 accept control input, reply to parameter queries, and provide alarm and alert indications via the MDT connector(s).

b) The radio equipment shall128 provide monitoring output via the MDT connector.

c) The MDT interface shall129 be defined in a contractor developed Interface Control Document

(ICD) prepared in accordance with FAA-STD-025F that, at a minimum, includes the following: interface connection protocols, radio command/query/monitoring parameter syntax, addressing protocols, error checking protocols, and built-in error messages.

Note: The ICD will be of sufficient detail such that automated maintenance software can be developed.

d) All radio generated error codes shall130 be documented in the ICD as well as in the technical instruction book supplied to the FAA.

3.2.3.1.1.1 Maintenance Data Terminal Interface Software

a) The MDT interface software shall131 implement, at a minimum, the required control, query, and monitoring features as described in this PD (see sections 3.2.3.2, 3.2.3.3, and 3.2.3.4).

b) The MDT interface software shall132 meet specified requirements while operating on industry standard laptop/notebook personal computers that are configured, at a minimum, as depicted in Table 3-12 below.

c) The MDT interface software should28 meet specified requirements while operating on industry standard laptop/notebook personal computers that are configured for the desired features as depicted in Table 3-12 below.

d) The MDT interface software should29 be capable of capturing and storing to a file the current configuration settings of any radio to which it is connected.

e) The MDT interface software should30 be capable of uploading configuration data from a file to the radio in order to return the radio to a previously saved state.

f) The MDT Interface Software shall133 allow manipulation of the following radio settings:

1. Test PTT

2. Modulation Level

3. Set/Recall Preset settings

4. Factory Reset

5. Event Log

6. Upload firmware

7. Mode of Operation (VHF 25 kHz or 8.33 kHz)

8. Modulation Limiter (if implemented)

9. High/Low Output Power Mode

g) The MDT Interface Software should31 allow manipulation of the following radio settings:

1. Warm Reset

2. Oscillator Frequency

3. Highest Tunable Frequency (if implemented)

4. Audio Output Level

5. Time (if applicable)

6. Squelch Enable/Disable

7. Squelch Threshold

8. Operating Frequency

9. Display Brightness/Contrast settings

10. Output Power Level

Table 3-12 Typical MDT Hardware/Software Hardware/Software Specification/Details

Operating System Windows 10 1Backward compatible to Windows 7 Service Pack 1

Browser Microsoft Edge and Google Chrome 2Backward compatible to Internet Explorer 11

CPU Intel Core 2 Duo T7500 Memory 1 GB RAM Hard Drive 250 MB available Network Adapter…