United Kingdom Frequency Allocation Table (UKFAT) Details the Uses (Referred to As 'Allocations') to Which Various Frequency Bands Are Put to the UK
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47 CFR Ch. I (10–1–97 Edition) § 80.223
§ 80.223 47 CFR Ch. I (10±1±97 Edition) (3) The interval between successive able to be manually keyed. If provi- tones must not exceed 4 milliseconds; sions are made for automatically (4) The amplitude ratio of the tones transmitting the radiotelegraph alarm must be flat within 1.6 dB; signal or the radiotelegraph distress (5) The output of the device must be signal, such provisions must meet the sufficient to modulate the associated requirements in subpart F of this part. transmitter for H2B emission to at (d) Any EPIRB carried as part of a least 70 percent, and for J2B emission survival craft station must comply to within 3 dB of the rated peak enve- with the specific technical and per- lope power; formance requirements for its class (6) Light from the device must not contained in subpart V of this chapter. interfere with the safe navigation of the ship; [51 FR 31213, Sept. 2, 1986, as amended at 53 (7) After activation the device must FR 8905, Mar. 18, 1988; 53 FR 37308, Sept. 26, automatically generate the radio- 1988; 56 FR 11516, Mar. 19, 1991] telephone alarm signal for not less than 30 seconds and not more than 60 § 80.225 Requirements for selective seconds unless manually interrupted; calling equipment. (8) After generating the radio- This section specifies the require- telephone alarm signal or after manual ments for voluntary digital selective interruption the device must be imme- calling (DSC) equipment and selective diately ready to repeat the signal; calling equipment installed in ship and (9) The transmitter must be auto- coast stations. -
Spectrum Management: a State of the Profession White Paper
Astro2020 APC White Paper Spectrum Management: A State of the Profession White Paper Type of Activity: ☐ Ground Based Project ☐ Space Based Project ☐ Infrastructure Activity ☐ Technological Development Activity ☒ State of the Profession Consideration ☐ Other Principal Author: Name: Liese van Zee Institution: Indiana University Email: [email protected] Phone: 812 855 0274 Co-authors: (names and institutions) David DeBoer (University of California, Radio Astronomy Lab), Darrel Emerson (Steward Observatory, University of Arizona), Tomas E. Gergely (retired), Namir Kassim (Naval Research Laboratory), Amy J. Lovell (Agnes Scott College), James M. Moran (Center for Astrophysics | Harvard & Smithsonian), Timothy J. Pearson (California Institute of Technology), Scott Ransom (National Radio Astronomy Observatory), and Gregory B. Taylor (University of New Mexico) Abstract (optional): This Astro2020 APC white paper addresses state of the profession considerations regarding spectrum management for the protection of radio astronomy observations. Given the increasing commercial demand for radio spectrum, and the high monetary value associated with such use, innovative approaches to spectrum management will be necessary to ensure the scientific capabilities of current and future radio telescopes. Key aspects include development of methods, in both hardware and software, to improve mitigation and excision of radio frequency interference (RFI). In addition, innovative approaches to radio regulations and coordination between observatories and commercial -
General Disclaimer One Or More of the Following Statements May Affect
General Disclaimer One or more of the Following Statements may affect this Document This document has been reproduced from the best copy furnished by the organizational source. It is being released in the interest of making available as much information as possible. This document may contain data, which exceeds the sheet parameters. It was furnished in this condition by the organizational source and is the best copy available. This document may contain tone-on-tone or color graphs, charts and/or pictures, which have been reproduced in black and white. This document is paginated as submitted by the original source. Portions of this document are not fully legible due to the historical nature of some of the material. However, it is the best reproduction available from the original submission. Produced by the NASA Center for Aerospace Information (CASI) . AE (NASA-TM-74770) SATELLITES FOR DISTRESS 77-28178 ALERTING AND LOCATING; REPORT BY TNTERAG .ENCY COMMITTEE FOR SEARCH AND RESCUE !^ !I"^ U U AD HOC WORKING GROUP Final Report. ( National. Unclas Aeronautics and Space Administration) 178 p G3 / 15 41346 0" INTERAGENCY COMMITTEE FOR SEARCH AND RESCUE AD HOC WORKING GROUP REPORT ON SATELLITES FOR DISTRESS ALERTING AND LOCATING FINAL REPORT OCTOBER 1976 r^> JUL 1977 RASA STI FACIUIV INPUT 3DNUH ^;w ^^^p^112 ^3 jq7 Lltl1V797, I - , ^1^ , - I t Y I FOREWORD L I^ This report was prepared to document the work initiated by the ad hoc working group on satellites for search and rescue (SAR). The ad hoc L working group on satellites for distress alerting and locating (DAL), formed 1 in November 1975 by agreement of the Interagency Committee on Search and Rescue (ICSAR), consisted of representatives from Maritime Administration, NASA Headquarters, Goddard Space Flight Center, U.S. -
The 630 Meter Band
The 630 Meter Band Introduction The 630 meter Amateur Radio band is a frequency band allocated by the International Telecommunication Union (ITU) to the Amateur Service, and ranges from 472 to 479 kHz, or equivalently 625.9 to 635.1 meters wavelength. It was formally allocated to the Amateur Service as part of the Final Acts of the 2012 World Radiocommunication Conference (WRC-12). Once approved by the appropriate national regulatory authority, the band is available on a secondary basis to countries in all ITU regions with the limitation that Amateur stations have a maximum radiated power of 1 Watt effective isotropic radiated power (EIRP). Stations more than 800 km from certain countries (listed below) may be permitted to use 5 Watts EIRP however. The ITU Final Acts took effect 1 January 2013 and after public consultation on all of the ITU allocation changes contained it, the 630 meter band was added to the Canada Table of Frequencies in 2014. Several countries had previously allocated the WRC-12 band to Amateurs domestically. Several other countries had also already authorized temporary allocations or experimental operations on nearby frequencies. The band is in the Medium Frequency (MF) region, within the greater 415–526.5 kHz maritime band. The first International Wireless Telegraph Convention, held in Berlin on November 3, 1906, designated 500 kHz as the maritime international distress frequency. For nearly 100 years, the “600-meter band” (495 to 510 kHz) served as the primary calling and distress frequency for maritime communication, first using spark transmissions, and later CW. In the 1980s a transition began to the Global Maritime Distress Signaling System (GMDSS), which uses UHF communication via satellite. -
Global Maritime Distress and Safety System (GMDSS) Handbook 2018 I CONTENTS
FOREWORD This handbook has been produced by the Australian Maritime Safety Authority (AMSA), and is intended for use on ships that are: • compulsorily equipped with GMDSS radiocommunication installations in accordance with the requirements of the International Convention for the Safety of Life at Sea Convention 1974 (SOLAS) and Commonwealth or State government marine legislation • voluntarily equipped with GMDSS radiocommunication installations. It is the recommended textbook for candidates wishing to qualify for the Australian GMDSS General Operator’s Certificate of Proficiency. This handbook replaces the tenth edition of the GMDSS Handbook published in September 2013, and has been amended to reflect: • changes to regulations adopted by the International Telecommunication Union (ITU) World Radiocommunications Conference (2015) • changes to Inmarsat services • an updated AMSA distress beacon registration form • changes to various ITU Recommendations • changes to the publications published by the ITU • developments in Man Overboard (MOB) devices • clarification of GMDSS radio log procedures • general editorial updating and improvements. Procedures outlined in the handbook are based on the ITU Radio Regulations, on radio procedures used by Australian Maritime Communications Stations and Satellite Earth Stations in the Inmarsat network. Careful observance of the procedures covered by this handbook is essential for the efficient exchange of communications in the marine radiocommunication service, particularly where safety of life at sea is concerned. Special attention should be given to those sections dealing with distress, urgency, and safety. Operators of radiocommunications equipment on vessels not equipped with GMDSS installations should refer to the Marine Radio Operators Handbook published by the Australian Maritime College, Launceston, Tasmania, Australia. No provision of this handbook or the ITU Radio Regulations prevents the use, by a ship in distress, of any means at its disposal to attract attention, make known its position and obtain help. -
187 Part 87—Aviation Services
Federal Communications Commission Pt. 87 the ship aboard which the ship earth determination purposes under the fol- station is to be installed and operated. lowing conditions: (b) A station license for a portable (1) The radio transmitting equipment ship earth station may be issued to the attached to the cable-marker buoy as- owner or operator of portable earth sociated with the ship station must be station equipment proposing to furnish described in the station application; satellite communication services on (2) The call sign used for the trans- board more than one ship or fixed off- mitter operating under the provisions shore platform located in the marine of this section is the call sign of the environment. ship station followed by the letters ``BT'' and the identifying number of [52 FR 27003, July 17, 1987, as amended at 54 the buoy. FR 49995, Dec. 4, 1989] (3) The buoy transmitter must be § 80.1187 Scope of communication. continuously monitored by a licensed radiotelegraph operator on board the Ship earth stations must be used for cable repair ship station; and telecommunications related to the (4) The transmitter must operate business or operation of ships and for under the provisions in § 80.375(b). public correspondence of persons on board. Portable ship earth stations are authorized to meet the business, oper- PART 87ÐAVIATION SERVICES ational and public correspondence tele- communication needs of fixed offshore Subpart AÐGeneral Information platforms located in the marine envi- Sec. ronment as well as ships. The types of 87.1 Basis and purpose. emission are determined by the 87.3 Other applicable rule parts. -
ATTACHMENT a to FCC Public Notice DA 20-1243 Recommendations Presented at October 20, 2020, Meeting of the World Radiocommunicat
ATTACHMENT A to FCC Public Notice DA 20-1243 Recommendations presented at October 20, 2020, Meeting of the World Radiocommunication Conference Advisory Committee 1 Maritime Aeronautical and Radar Services 2 WAC-23/0009 IWG-1/007 (09.23.20) UNITED STATES OF AMERICA DRAFT PRELIMINARY VIEW ON WRC-23 AI 1.6 AGENDA ITEM 1.6: to consider, in accordance with Resolution 772 (WRC-19), regulatory provisions to facilitate radiocommunications for sub-orbital vehicles; ISSUE: The United States requires a stable regulatory framework for radiocommunications for sub-orbital vehicles. BACKGROUND: Sub-orbital vehicles must operate in the same airspace as conventional aircraft while transitioning to and from space. Stations on board sub-orbital vehicles have a need for voice/data communications, navigation, surveillance, and telemetry and tracking and command (TT&C) applications to safely and effectively complete various mission requirements. The current regulatory provisions and procedures for terrestrial and space services may or may not be adequate for international use of relevant frequency assignments by stations on board sub-orbital vehicles. Resolution 772 (WRC-19) calls for studying spectrum needs and appropriate modifications to the Radio Regulations to accommodate sub-orbital vehicle radiocommunications requirements, excluding any new allocations or changes to the existing allocations in Article 51. There are several U.S. Commercial Space Transportation industry and government initiatives that could benefit from modification of the Radio Regulations as a result of these technical, operational, and regulatory studies. U.S. VIEW: To pursue studies called for by Resolution 772 (WRC-19) as a basis for possible new Radio Regulations to support the growing radiocommunications needs of sub-orbital vehicles. -
Low-Power Radio-Frequency Devices Technical Regulations
Telecom Technical Regulations Low Power 0002 (LP0002) Test Requirements 10 January, 2018 revised Low-power Radio-frequency Devices Technical Regulations January, 2018 - 0 - Contents Preface 1 TERMINOLOGY ................................................................................................................................ 3 2 GENERAL REQUIREMENTS ............................................................................................................ 5 3 CONFORMANCE SPECIFICATIONS (BY FREQUENCY RANGES) .................................................. 8 3.1 Frequency bands:1.705 MHz - 37 MHz. .......................................................................................... 8 3.2 Operation within the band 13.553 MHz〜13.567 MHz ..................................................................... 8 3.3 Operation within the band: 26.957 MHz〜27.283 MHz .................................................................... 8 3.4 Operation within the band: 40.66 MHz〜40.70 MHz and above 70 MHz .......................................... 9 3.5 Operation within the band: 49.82 MHz〜49.90MHz ....................................................................... 11 3.6 Operation within the band 72.0 MHz〜73.0 MHz ........................................................................... 11 3.7 Operation within the band: 88.0 MHz〜108.0MHz ......................................................................... 12 3.8 Operation within the bands: 174.0 MHz〜216.0 MHz, 584 MHz〜608 MHz ................................... 12 3.9 Operation -
Chapter 2 Frequency Allocation Table 1. the Explanations of the Columns
Chapter 2 Frequency Allocation Table Radiocommunication Services Purposes of Radio stations Fixed-Satellite Service Commercial Telecommunications 1. The explanations of the columns in the table are as follows. Inter-Satellite Service Service (1) Columns 1 to 3 in the Table show, as a reference, the international frequency Mobile-Satellite Service Public Service allocations stipulated in Article 5 of the RR. Aeronautical Mobile (OR) Service Public Service (2) Column 4 in the Table shows national frequency allocations of Japan. Any Aeronautical Mobile-Satellite (OR) conditions of radiocommunication services are indicated with parentheses. Service The upper limit frequency is included, but the lower limit frequency is not Standard Frequency and Time Signal included in each frequency band. Service (3) The radiocommunication services in the columns 1 to 4 in the Table are Standard Frequency and Time expressed with the following manner. Signal-Satellite Service a. Services printed in “capitals” (e.g. FIXED) are called “primary” services, Broadcasting Service Broadcasting Service and services printed in “normal characters” (e.g. Mobile) are called Broadcasting-Satellite Service “secondary” services. Meteorological Aids Service Public Service b. Frequencies are assigned to radio stations of secondary services under the Earth Exploration-Satellite Service General Service following conditions: Meteorological-Satellite Service - The use of the frequencies shall not cause harmful interference to Space Research Service stations of primary services to which frequencies are already assigned or Amateur Service Amateur Service to which frequencies may be assigned in the future. Amateur-Satellite Service - The radio stations cannot claim protection from harmful interference Other Radio Services Commercial Telecommunications from stations of primary services to which frequencies are already (except passive services) Service assigned or may be assigned in the future. -
Spectrum Planning at the FCC and Emerging Technology Topics
Spectrum Planning at the FCC and Emerging Technology Topics Office of Engineering and Technology USTTI August 27, 2020 Note: The views expressed in this presentation are those of the author and may not necessarily represent the views of the Federal Communications Commission FCC FAST Plan • FCC is pursuing a comprehensive strategy to Facilitate 5G Technology (the 5G FAST Plan) • The Chairman's strategy includes three key components: – (1) pushing more spectrum into the marketplace – (2) updating infrastructure policy – (3) modernizing outdated regulations 2 FCC Spectrum Actions for 5G Use 28 GHz band auction (27.5 GHz – 28.35 GHz; 2 x 425) Completed January 2019 24 GHz band auction 103 (24.25 – 24.45; 25.25 -25.75 GHz; 7 x100) Completed May 2019 High-band: 37 GHz, 39 GHz, and 47 GHz (concluded auction 103 March 2020, largest in American history, releasing 3,400 megahertz of spectrum into the commercial marketplace ) Working to free up additional 2.75 gigahertz of 5G spectrum in the 26 and 42 GHz bands Mid-band: 2.5 GHz, 3.5 GHz, and 3.7-4.2 GHz bands Targeted changes to 600 MHz, 800 MHz, and 900 MHz bands to improve use of Low-band: low band spectrum for 5G services Creating opportunities for Wi-Fi in the 6 GHz, 61-71 GHz and above 95 GHz bands; also taking a fresh and comprehensive look at the 5.9 GHz (5.850-5.925 Unlicensed: GHz) band that has been reserved for use by Dedicated Short-Range Communications (DSRC) Spectrum Management • Decisions should consider – Efficient spectrum use – Interference protection – New technology introduction -
Consultation: Improving Spectrum Access for Wi-Fi
Improving spectrum access for Wi-Fi Spectrum use in the 5 and 6 GHz bands CONSULTATION: Publication date: 17 January 2020 Closing date for responses: 20 March 2020 Contents Section 1. Overview 1 2. Introduction 3 3. Current and future use of Wi-Fi 7 4. Opening spectrum for Wi-Fi in the 5925-6425 MHz band 14 5. Making more efficient use of spectrum in the 5725-5850 MHz band 20 6. Conclusions and next steps 25 Annex A1. Responding to this consultation 26 A2. Ofcom’s consultation principles 29 A3. Consultation coversheet 30 A4. Consultation questions 31 A5. Legal framework 32 A6. Current and future demand for Wi-Fi 37 A7. Coexistence studies in the 5925-6425 MHz band 40 A8. Proposed updates to Interface Requirement 2030 62 A9. Glossary 65 Improving spectrum access for Wi-Fi 1. Overview Spectrum provides the radio waves that support wireless services used by people and businesses every day, including Wi-Fi. We are reviewing our existing regulations for spectrum for unlicensed use to meet future demand, address existing problems of slow speeds and congestion, and enable new, innovative applications. People and businesses in the UK are increasingly using Wi-Fi to support everyday activities and new applications are driving demand for faster and more reliable Wi-Fi. To meet this growing demand, we are proposing to increase the amount of spectrum available for Wi-Fi and other related wireless technologies, and to remove certain technical conditions that currently apply. What we are proposing – in brief We are proposing the following measures to improve the Wi-Fi experience for people and businesses: • Make the lower 6 GHz band (5925-6425 MHz) available for Wi-Fi. -
Spacex Non-Geostationary Satellite System
SPACEX NON-GEOSTATIONARY SATELLITE SYSTEM ATTACHMENT A TECHNICAL INFORMATION TO SUPPLEMENT SCHEDULE S A.1 SCOPE AND PURPOSE This attachment contains the information required under Part 25 of the Commission’s rules that cannot be fully captured by the associated Schedule S. A.2 OVERALL DESCRIPTION The SpaceX non-geostationary orbit (“NGSO”) satellite system (the “SpaceX System”) consists of a constellation of 4,425 satellites (plus in-orbit spares)1 operating in 83 orbital planes (at altitudes ranging from 1,110 km to 1,325 km), as well as associated ground control facilities, gateway earth stations and end user earth stations. The overall constellation will be configured as follows: SPACEX SYSTEM CONSTELLATION Parameter Initial Final Deployment Deployment (2,825 satellites) (1,600 satellites) Orbital Planes 32 32 8 5 6 Satellites per Plane 50 50 50 75 75 Altitude 1,150 km 1,110 km 1,130 km 1,275 km 1,325 km Inclination 53º 53.8º 74º 81º 70º This constellation will enable SpaceX to provide full and continuous global coverage, utilizing a minimum elevation angle of 40 degrees. 1 SpaceX will provision to launch up to two extra spacecraft per plane to replenish the constellation in the event of on-orbit failures. If a case arises wherein a spare is not immediately needed, it will remain dormant in the same orbit and will perform station-keeping and debris avoidance maneuvers along with the rest of the active constellation. Because these spare satellites will not operate their communications payloads, and the TT&C facilities communicate in turn with a fixed number of satellites at all times, the addition of spare satellites will not affect the interference analyses for TT&C operations presented in this application.