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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. -
Proposed Changes to the Morse Code (CW) ) RM-10784, Proficiency Requirement for Operator ) RM-10785, Access to the Amateur Radio Bands ) RM-10786, and Below 30 Mhz
Before the Federal Communications Commission Washington, DC 20554 ) In the Matter of ) RM-10781, ) RM-10782, The Amateur Radio Service: ) RM-10783, Proposed Changes to the Morse Code (CW) ) RM-10784, Proficiency Requirement for Operator ) RM-10785, Access to the Amateur Radio Bands ) RM-10786, and Below 30 MHz. ) RM-10787 ) COMMENTS TO PETITIONS FOR RULEMAKING GREETINGS: INTRODUCTION As all parties concerned are no doubt aware, the Morse code telegraphy proficiency requirement for Amateur Radio Service operators has been eliminated from the International Telecommunications Union (ITU) Radio Regulations. This change was effected on 5 July 2003 at the World Radiocommunication Conference 2003 (WRC-03), Geneva, by revising Article 25.5 §3 1 of these regulations. The revised Article 25.5 now gives the administrations of individual member nations, such as the US Federal Communications Commission (FCC or Commission), discretion to “…determine whether or not a person seeking a license to operate an amateur station shall demonstrate the ability to send and receive texts in Morse code signals.” Previously, knowledge of or demonstration of Morse code proficiency had been required by ITU regulation for amateur radio operation on all frequencies below 30 MHz. These 1 Dixon Comments frequencies include all of the amateur High Frequency (HF or shortwave) bands, and the one amateur Medium Frequency (MF or medium-wave) band. Note: For purposes of this document, references henceforth to “HF” or “High Frequency” or “shortwave” shall be deemed to include MF or Medium Frequency or medium-wave, as well. This is in fact colloquial nomenclature among amateur radio operators. The various petitions for rulemaking captioned above seek various degrees of relief from the somewhat burdensome requirement for US-licensed Amateur Radio Service operators (amateurs), presently needed to access the very popular and preferential international High Frequency amateur radio bands. -
Portable Shortwave Receivers
Portable Shortwave Receivers ● Longwave, AM, FM and Shortwave ELITE SATELLIT ● VHF Air Band ● HD Radio Reception ● RDS Display ● Superior Sensitivity and Selectivity ● Dual Conversion Design ● Huge 5.7 Inch Backlit Display ● Drift-free Digital Phase Lock Loop ● Direct Frequency and Band Entry ● Single Sideband Synchronous Detector ● Selectable Bandwidths ● High Dynamic Range ● Dual Programmable Clocks ● Dual Event Programmable Timers ● Stereo Line Level Input ● Stereo Line Level Output ● Earphone Jack ● Separate Bass and Treble Controls ● Adjustable AGC: Fast or Slow ● Telescopic Antenna AM/FM/SW ● Battery (4xD) or Included AC Adapter ● Scan and Search ● 1700 Total Memories (500 alphanumeric) ● Deluxe Carry Bag The Elite Satellit is simply the finest full-sized portable in the world. The Elite Satellit is an elegant confluence of performance, features and capabilities. The look, feel and finish of this radio is superb. The solid, quality feel is second to none. The digitally synthesized, dual conversion shortwave tuner covers all long wave, mediums wave (AM) and shortwave frequencies. HD Radio improves audio fidelity and adds additional programming without a subscription fee. Adjacent frequency interference can be minimized or eliminated with a choice of three bandwidths [7.0, 4.0, 2.5 kHz]. The sideband selectable Synchronous AM Detector further minimizes adjacent frequency interference and reduces fading distortion of AM signals. IF Passband Tuning is yet another advanced feature that functions in AM and SSB modes to reject interference. AGC is selectable at fast or slow. High dynamic range permits the detection of weak signals in the presence of strong signals. All this coupled with great sensitivity will bring in stations from every part of the globe. -
New Solar Research Yukon's CKRW Is 50 Uganda
December 2019 Volume 65 No. 7 . New solar research . Yukon’s CKRW is 50 . Uganda: African monitor . Cape Greco goes silent . Radio art sells for $52m . Overseas Russian radio . Oban, Sheigra DXpeditions Hon. President* Bernard Brown, 130 Ashland Road West, Sutton-in-Ashfield, Notts. NG17 2HS Secretary* Herman Boel, Papeveld 3, B-9320 Erembodegem (Aalst), Vlaanderen (Belgium) +32-476-524258 [email protected] Treasurer* Martin Hall, Glackin, 199 Clashmore, Lochinver, Lairg, Sutherland IV27 4JQ 01571-855360 [email protected] MWN General Steve Whitt, Landsvale, High Catton, Yorkshire YO41 1EH Editor* 01759-373704 [email protected] (editorial & stop press news) Membership Paul Crankshaw, 3 North Neuk, Troon, Ayrshire KA10 6TT Secretary 01292-316008 [email protected] (all changes of name or address) MWN Despatch Peter Wells, 9 Hadlow Way, Lancing, Sussex BN15 9DE 01903 851517 [email protected] (printing/ despatch enquiries) Publisher VACANCY [email protected] (all orders for club publications & CDs) MWN Contributing Editors (* = MWC Officer; all addresses are UK unless indicated) DX Loggings Martin Hall, Glackin, 199 Clashmore, Lochinver, Lairg, Sutherland IV27 4JQ 01571-855360 [email protected] Mailbag Herman Boel, Papeveld 3, B-9320 Erembodegem (Aalst), Vlaanderen (Belgium) +32-476-524258 [email protected] Home Front John Williams, 100 Gravel Lane, Hemel Hempstead, Herts HP1 1SB 01442-408567 [email protected] Eurolog John Williams, 100 Gravel Lane, Hemel Hempstead, Herts HP1 1SB World News Ton Timmerman, H. Heijermanspln 10, 2024 JJ Haarlem, The Netherlands [email protected] Beacons/Utility Desk VACANCY [email protected] Central American Tore Larsson, Frejagatan 14A, SE-521 43 Falköping, Sweden Desk +-46-515-13702 fax: 00-46-515-723519 [email protected] S. -
Specifications of Shortwave Radios from Various Manufacturers
http://entropy.brneurosci.org/radio-misc.html Specifications of shortwave radios from various manufacturers Last updated June 6, 2006 The information below was compiled during my (so far unsuccessful) search for the ideal shortwave radio to replace my old Sony ICF-2010. I discovered that there was so much information to digest, the only way to organize it was to put it on a Web page. Much of this information has been pasted directly from the vendors' Websites and may or may not be factually correct. Where the information is known to be incorrect or misleading, this is noted. Most of the opinions are my own, based mostly on the publicly available specifications and comments from various Internet sources. The information describes the specifications of receivers that I have not tested, and summarizes the opinions that seem to be generally held about each receiver based on comments I found on the Internet. I have not personally verified any of this information. In case you're interested, I decided not to buy any of the radios listed here, but repaired my old Sony instead. Receivers Drake R8B Icom R9000 Icom R8500 AOR AR5000 AOR SR1050 Ten-Tec RX-350D Icom R75 Icom IC-PCR1500 and IC-R1500 Icom IC-PCR1000 Kaito WRX-911 Palstar R30 Grundig YB300 Grundig G2000A Grundig YB550 Grundig YB400 Grundig Satellit 800 Eton E1XM Panasonic RF-4900 Yaesu FRG-7 AOR AR-3030 AOR AR-8600 Mark 2 Collins 95S Sony ICF-SW7600 Sony ICF-SW77 Sony ICF-SW2010 Sony ICF-100 Yaesu FRG-9600 Yaesu FRG-100 Review Review AOR AR-One Lowe HF-150 AOR AR7030+ JRC NRD-545 Kenwood R5000 JRC NRD-525 Icom IC-R3 Yaesu VR-5000 Ten-Tec RX-331 Ten-Tec RX-340 Sangean ATS-909 Ten-Tec RX-320D Software-defined radios The number of software defined receivers is exploding. -
Shortwave-Listening
Listen to global news in the making! Monitor transmissions from Voice of America. Radio Canada, Radio Netherlands. Radio Moscow and many others. Learn how radio waves tra- vel. Get information on popular shortwave bands and licensing for a Itypes of equipment. Radio Listener's Guide by William Barden, Jr. Radio Shack A Division of Tandy Corporation First Edition First Printing-1987 Copyright01987 by William Barden Jr., Inc. Printed in the United States of America. All rights reserved. Reproduction or use, without express permission, of editorial or pictorial content, in any manner, is prohibited. No patent liability is assumed with respect to the use of the information contained herein. Library of Congress Catalog Card Number: XX-XXXXX Radio Listener's Guide T Table of Contents Section I World of the BBC, Radio Moscow, Police Calls, Aircraft Communications, and Hams Chapter 1. Radio—What Is It' Generating Radio Waves—The Radio Spectrum—Radio Equipment and Frequencies—Band Use—How Radio Waves Travel—Radio Licenses and Listening—Subbands and Channels—Radio Equipment Chapter 2. Types of Broadcasting Voice Communication—Code Transmission—Teleprinter Transmission— Facsimile Transmission—Slow-Scan Television—Fast-Scan Television — Repeaters— Portable Phones—Satellite Reception—Transmitting Power Chapter 3. Shortwave Broadcasters Frequency Assignments—The European Long-Wave Band—The AM Broadcast Band—Tropical Broadcasting-49- and 41-Meter Bands-31- and 25-Meter Bands—Above the 25-Meter Band—A Typical Listening Session—Logging Foreign Stations—Foreign Broadcast lnformation—QSL Cards Chapter 4. Other Types of Broadcasting in the Lower Frequencies Transmissions Below the AM Broadcast Band—The AM Broadcast Band— Portable Phones—Marine Transmissions—CW Transmissions—Radio Teleprinter—Single Sideband—Time and Frequency Signals—Weather Maps by Facsimile—Citizen's Band Frequencies—The Russian Woodpecker—Pirate and Clandestine Stations Chapter 5. -
Inside This Issue
News Serving DX’ers since 1933 Volume 82, No. 7●December 29, 2014● (ISSN 0737-1639) Inside this issue . 2 … AM Switch 11 … Domestic DX Digest East 16 … College Sports Networks 5 … Membership Report 14 … International DX Digest 17 … Treasurer’s Report 6 … Domestic DX Digest West 15 … Musings of the Members 18 … Geo Indices/Space Wx Board Announcement: The NRC Board of DecaloMania in Fort Wayne, Indiana, July 10‐12, Directors is pleased to announce the 2015. More details will be forthcoming as our appointment of its newest member to the BoD to host Scott Fybush works them out. fill the vacant seat left by Ken Chatterton after DX Tests: If you want to help arrange tests, his resignation earlier this year. Dave Schmidt, contact Brandon Jordan, the NRC/IRCA Test who has served as Musings of the Members Coordination, at P.O. Box 338, Rossville TN editor for over twenty years and DDXD editor 38066, (901) 592‐9847, and [email protected]. before that, is our newest BoD member. Dave Brandon has set up a web site at also has a keen interest in record collecting and http://dxtests.net/ for the latest test info. And Internet radio (maybe he’ll tell you more in a follow him on Twitter @AMDXTests for the latest Musing soon!). Welcome, Dave! – Paul test info. Swearingen, NRC BoD Chairman. PARI DXpedition: Via the NASWA Journal, DXAS: Fred Vobbe has announced that he Thomas Witherspoon is planning a unique will be stepping down as publisher of the DX DXpedition to the Pisgah Astronomical Research Audio Service after the April 2015 issue. -
AM Loop Antennas AM LOOP ANTENNAS Introduction
AM Loop Antennas AM LOOP ANTENNAS Introduction An AM loop antenna is one of the true marvels of electronics. Requiring no power, it takes advantage of the resonant properties of an inductor and a capacitor connected in parallel to receive weak AM stations. The "loop" part of the antenna is the inductor, and the tuning capacitor makes it resonate at a desired frequency. As a boy in Abilene in 1967, I discovered the basic principle of the loop antenna. By removing a relatively small spiral loop in my five tube table radio, and substituting a much larger loop salvaged from an older radio, I could receive my favorite station - KLIF from Dallas better. I hid the loop in a cardboard holder featuring the logo of a favorite rock band, and enjoyed many hours of good listening. Lacking the mathematical background to understand antenna theory - I could not take the concept to the next phase: designing my own loop. Nevertheless, the spiral loop - combined with the antenna section of the radio's tuning capacitor - formed a very good loop antenna. I understood quite well that the bigger the loop, the more stations I could receive. The schematic diagram of an AM loop antenna is shown below. It consists of an inductive winding, which is supported on a frame, and a variable tuning capacitor that can be salvaged from a junk radio. The inductive winding consists of a primary, which forms a resonant network with the tuning capacitor, and a secondary "sense" winding that can be connected to a radio. In practice, however, the sense winding is not needed if the loop antenna can be placed near the radio - mutual coupling will take place with the antenna in the radio. -
EDXC Conference 2017
50 th EDXC Conference in Tampere Alan Pennington reports from Finland The 2017 European DX Council (EDXC) conference was held in Tampere, Finland between 18 th - 20 th August, hosted by the Finnish DX Association (FDXA) (Suomen DX-Liitto (SDXL) in Finnish). Local FDXA member club is the Tampere DX-listeners club (TreDXK). Both EDXC and TreDXK, were celebrating their 50 th anniversary this year, having been founded in 1967. On 6 th December this year, Finland will also celebrate 100 years of independence from Russia. So lots to celebrate! Helsinki Central railway station. Risto outside FDXA office in Helsinki Those delegates staying in Helsinki on the day before the conference started were kindly invited on a short walking tour of some of Helsinki’s city centre attractions, led by Risto Vähäkainu of the FDXA, which ended with some welcome local refreshments at the FDXA office in Annankatu. The city of Tampere is in southern Finland, a 160km 90-minute express train ride north of the capital, Helsinki. It is sited between two lakes which are linked by the Tammerkoski, a 1km channel of rapids whose power was harnessed by the textile industry in the 19 th century, and whose heritage red brick mills still line its banks. As a result, the city is often compared to Manchester (UK), but today the old industries have gone, and it is a thriving modern technology and university city, the third largest in Finland with a population of around 220,000. The conference venue was the modern Varala Sports Institute (https://varala.fi ), sited in a lakeside forest, 3km from Tampere city centre. -
Grundig S800
FRONT PANEL DESCRIPTION (See page 12) LCD DISPLAY DESCRIPTION (See page 14) REAR PANEL DESCRIPTION (See Paee 15) 3 SPECIFICATIONS Frequency Range: 100 to 30.000 kHz (0.1 to 30 MHz). Line Audio Outputs: Stereo left and right. 87 to 108 MHz, 118 to 137 MHz. 300 mV. 4.7K Ohms for each output. AM. USB. LSB modes (0.1 to 30 MHz). AM mode only for 118 to 137 MHz. Headphone Jack: 1/8 inch (3.175mm) stereo/mono type. FM mode only for 87 to 108 MHz. DC Power Requirements: Input: 7-10 VDC 0 1 Amp. supplied from Sensitivity - SSB AC ADAPTER, external DC Power (10 dB S+N/N): Less than 0.5 uV, 0.1 to 30 MHz. Supply or 5.7 to 9.0 VDC supplied by (6) internally mounted "D" cell (1.5V) Sensitivity - AM batteries (not supplied). (10 dB S+N/N): Less than 2.0 uV. 0.1 to 30 MHz. (1000 Hz. 30% Mod): Less than 4.0 pV, 118 to 137 MHz. Current requirements (approximate) from Sensitivity - FM 9.0 VDC Supply or (20 dB S/N) (monaural): Less than 4 uV, 87 to 108 MHz. Batteries with 1/4 W average Audio Output: Mode Dependent: Frequency Stability 10 ppm, 0C to 50C 510 mA minimum with lamp off, 830 mA maximum with lamp on. Frequency Accuracy: Better than 100 Hz. c 25' C Operating Temperature: 0C to +50C Selectivity - SSB. AM: 6 kHz c -6 dB, less than 12 kHz 0 -60 dB. 4 kHz c -6 dB. -
Shortwave Radio Listening
Shortwave Radio Listening What You Need To Get Started Jeffrey P. Miller (N2AWA) / March 2014 (Third Edition) Table of Contents About this Guide ............................................................................................................................. 1 What is Shortwave Radio Listening? .............................................................................................. 1 What Do I Need to Get Started? ..................................................................................................... 2 Shortwave Radio ......................................................................................................................... 2 Program Guide ............................................................................................................................ 3 Convert Your Local Time to Coordinated Universal Time (UTC) ............................................. 3 Where are the Shortwave Frequencies? .......................................................................................... 3 The Shortwave Band Plan (2.3 MHz – 30 MHz) ........................................................................ 4 What Can I Hear on Shortwave? ................................................................................................. 5 What are the Best Times to Listen? ............................................................................................ 5 Daytime and Nighttime Listening .............................................................................................. -
Federal Communications Commission (As of June 30, 1957)
FEDERAL COMMUNICATIONS COMMISSION 23rd Annual Report For Fiscal Year 1957 With introductory summary and'niltllthllls" \1 of later important developments UNITED STATES GOVERNMENT PRINTING OFFICE· WASHINGTON For .ar. by the Superlntenden' of Documents, U. s. Govem.,.n' PrInting 0fR~ Wadlington 25, D. C. • Prlce.so centI COMMISSIONERS Members of 'he Federal Communications Commission (As of June 30, 1957) GEORGE C. MCCONNAUGHEY. Chairman 1 (Term expires June SO, 1957) ROSEL H. HYDE (Term expires June SO, 1959) ROBERT T. BARTLEY (Term expires June 30, J958) JOHN C. DOERFER (Term expires June 30, 1961) ROBERT E. LEE (Tenn eJ:pirea JUD.. 30, 1960) RICHARD A. MACK (Tetm ezpir.. June SOl 1962) T. A. M. CRAVEN (Term expIres June 30, 1963) A list of present and past Commissioners appears in the appendix to this report. 1 Suceceded .. Chairman by '<Ibn C. Doerfel OD July I, 1957, and u Comm.l181oner by Fredulck W. Ford n,.,A.aJU"29.1!167. II LETTER OF TRANSMITTAL FEDERAL COMMUNICATIONS COMMISSION, W IUhington 25, D. C. 1'0 the Congres8 01 the United States: Herewith is transmitted the 23rd annual report of the Federal Communications Commission. It contains information and data required to be reported to the Congress by section 4 (k) of the Com munications Act of 1934, as amended. Though this compilation covers, primarily, the fiscal year ending June 30, 1957, notations of subsequent important developments are included to make the information more current. Biographies of employees joining the Commission during the year, as well as a list of those leaving during that period, are being reported in a nonprinted supplement.