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Topic: AM broadcast radio

	AM broadcasting - Wikipedia, the free encyclopedia
		Because of its susceptibility to atmospheric interference and generally lower-fidelity sound, AM broadcasting is better suited to talk radio and news programming, while music radio and public radio mostly shifted to FM broadcasting in the late 1960s and 1970s.
		AM radio began with the first, experimental broadcast in 1906 by Reginald Fessenden, and was used for small-scale voice and music broadcasts up until World War I.
		However, after sunset, changes in the ionosphere cause AM signals to travel by skywave, enabling AM radio stations to be heard much farther from their point of origin than is normal during the day.
	en.wikipedia.org /wiki/AM_broadcast_radio (946 words)

	radio (Site not responding. Last check: 2007-08-17)
		Although the word 'radio' is used to describe this phenomenon, the transmissions which we know as television, radio, radar, and cell phone are all in the class of radio frequency emissions.
		AM radio uses amplitude modulation, in which louder sounds at the microphone causes wider fluctuations in the transmitter power while the transmitter frequency remains unchanged.
		Radio remote control: Use of radio waves to transmit control data to a remote object as in some early forms of guided missile, some early TV remotes and a range of model boats, cars and aeroplanes.
	www.yourencyclopedia.net /Radio (3094 words)

	Radio (Site not responding. Last check: 2007-08-17)
		Radio waves are a form of electromagnetic radiation, and are created whenever a charged object accelerates with a frequency that lies in the radio frequency (RF) portion of the electromagnetic spectrum.
		Radio was used to pass on orders and communications between armies and navies on both sides in World War I; Germany used radio communications for diplomatic messages once its submarine cables were cut by the British.
		Radio amateurs are able to use frequencies in a large number of narrow bands throughout the radio spectrum.
	www.free-download-soft.com /info/radio.html (3320 words)

	LF Engineering AM Broadcast
		AM radio broadcast, the original RF broadcast medium, may not be in its heyday any longer but it is still live and well and operating between 530 kHz and 1705 kHz.
		Not only did AM circuitry in broadcast radios stop advancing, but in most instances manufacturers actually downgraded the AM section of their radios for the sake of cost savings.
		Today, your typical AM or AM/FM receiver, whether for car or for home will not have the same quality of AM fidelity, sensitivity, or selectivity that could be found in similar receivers built before the mid 1960's.
	www.lfengineering.com /am_broadcast.htm (619 words)

	United States Early Radio History
		Radio at Sea (1891-1916) - The first major use of radio was for navigation, where it greatly reduced the isolation of ships, saving thousands of lives, even though for the first couple of decades radio was generally limited to Morse Code transmissions.
		Radio During World War One (1914-1919) - Civilian radio activities were suspended during the war, as the radio industry was taken over by the government.
		Broadcasting Becomes Widespread (1922-1923) - Led by Westinghouse's 1920 and 1921 establishment of four well-financed stations -- located in or near Pittsburgh, Boston, Chicago and New York City -- there was a growing sense of excitement as broadcasting activities became more organized.
	earlyradiohistory.us (1676 words)

	[No title]
		Because in AM broadcasting, the tower is the antenna, and because there is an inverse relationship between the frequency of an AM broadcast radio signal and the wavelength of the signal, the antennas must be a certain minimum height in order to radiate.
		The design of any directional AM broadcast station is complex and "tuning" a directional antenna array is critically dependent on the efficiency of the antennas as constructed.
		FCC technical standards for AM antennas are rigidly adhered to, and are not subject to variation at the whim of a municipality which desires not to permit any antennas at all.
	www.qth.com /antennazoning/commercial/koor-amicus.doc (1258 words)

	AM Broadcast Band DX (Site not responding. Last check: 2007-08-17)
		AM broadcast radio - some say it's dying, some say it's been dead for years - since radio manufacturers started putting the FM broadcast band on receivers too.
		Certainly, the format of your basic, garden variety AM broadcast station circa 2003 is a lot different from what it used to be decades ago when AM was in its heyday.
		The easiest AM broadcast stations to log are the 50,000-watt powerhouse stations operating on what once were clear-channel frequencies (the aforementioned WWKB 1520 in Buffalo is a good example).
	www.qsl.net /kc2fng/amdx.html (1336 words)

	AM Radio :: Broadcast and Radio Networking (Site not responding. Last check: 2007-08-17)
		AM radio broadcasting: Talk Radio, sports and news, cultural and religious broadcasting; AM Radio is the heart of America.
		The National Association of Broadcasters is a full-service trade association that promotes and protects the interests of radio and television broadcasters.
		The Society of Broadcast Engineers, formed in 1963, is a non-profit organization serving the interests of broadcast engineers.
	amradio.org (486 words)

	Articles of Interest
		A "DXer" is someone who listens to distant radio station, or a station which is outside the normal broadcast area.
		While the National Radio Club deals with medium wave, or AM radio stations, there are other clubs that cater to FM, short wave, police scanners, data transmissions on the short wave bands, and many other topics.
		They include, aircheck collecting, which is the recording of broadcast radio stations and trading of these recordings with other individuals.
	www.vobbe.net /bcb-dx (544 words)

	ABA \| Broadcast services > Reception & interference > Radio (Site not responding. Last check: 2007-08-17)
		If both radios are affected, the problem could be electrical interference, either coming directly to the radio aerial, or through the mains wiring or a combination of both.
		Almost all reception difficulties are caused by faults or deficiencies in the radio or antenna installation.
		If the second radio is not affected, the problem is most likely in the first radio.
	www.aba.gov.au /broadcastserv/recinter/radio/interference.shtml (460 words)

	KCØJEX's Guide to AM DXing (Site not responding. Last check: 2007-08-17)
		AM DX is the abnormal reception of Medium Wave (or AM) Broadcast Radio Signals on the 530-1700 KHz band.
		When the AM radio station signals are at peak, you can hear stations across the country, and frequently international stations.
		Remember, AM Antennas are directional, a good device for pointing your radio towards the transmitting stations is a TV Swivel Base, or 'Lazy Susan', as the ordinary person calls it.
	www.geocities.com /tvdx/mediumwave/guide.html (513 words)

	AM Radio Page Broadcast Radio (FCC) USA
		AM stands for "Amplitude Modulation", which refers to the means of encoding the audio signal on the carrier frequency.
		AM stations are also sometimes referred to as "standard broadcast stations", since AM was the was the first form used to transmit broadcast radio signals to the public.
		AM daytime-only authorizations for new stations were discontinued on December 1, 1987.
	www.fcc.gov /mb/audio/main/am.html (1809 words)

	Michael Gaude (Site not responding. Last check: 2007-08-17)
		In Mexico: Teaching the Bible on the air radio program and with boys at foster care home morning devotional class, install, repair and construction of radio equipment at Radio Maranatha FM broadcast station, to reach into Temoris, Chihuahua with Radio Maranatha all Christian Spanish programming.
		It is wonderful that the Lord is reaching those who tune in to the radio station with His love, as Christian radio stations in Mexico are quite rare.
		Nicaragua prayer requests: Licenses for the up and coming FM broadcast radio stations in the 3 areas of Nueva Guinea with Pastor Leon Scott, Posoltega with Missionary Kent Aslett and at the Island of Omatepe.
	www.calvarychapel.com /CostaMesa/missions/Gaude-Michael.htm (356 words)

	Am Radio Broadcast Transmitters by Condord2.com
		Related terms are denver am radio stations, sample am fm antenna model files, best am radio antenna, broadcast equipment appraisers, and westwood one cbs radio online broadcast.
		Am radio broadcast transmitters is on Condord2.com Reliability: Partnering with leaders in the Radio and Television Equipment and Service in the broadcast industry.
		Condord2.com is related to broadcast equipment appraisers, westwood one cbs radio online broadcast, best am radio antenna, denver am radio stations, and sample am fm antenna model files.
	www.condord2.com /am_radio_broadcast_transmitters_d.html (525 words)

	Jack's Radio Page
		Here are several AM broadcast stations that you should be able to hear at great distances at night (mainly because they broadcast at high power).
		Crystal radios are typically so simple that they only pick up very strong local AM radio stations.
		Above are several that broadcast in English(except RFI) with strong dependable signals.
	www.netwalk.com /~fsv/homepage1.htm (807 words)

	Radio, CB Radio, Portable Radios, Marine Radio, Shortwave Radio, Weather Radios, Clock Radios (Site not responding. Last check: 2007-08-17)
		Radio, CB Radio, Portable Radios, Marine Radio, Shortwave Radio, Weather Radios, Clock Radios
		Another effect is that shorter VHF radio waves act more like light, travelling in straight lines, hence the reception range is generally limited to about 50-100 miles.
		Fidelity is sacrificed to use a smaller range of radio frequencies, usually five kilohertz of deviation (5 thousand cycles per second), rather than the 75 used by FM broadcasts and 25 used by TV sound.
	cerio.com /electronicsradios.html (608 words)

	AM Radio Main Page
		AM has two types of signals that reach listeners.
		Because AM signals travel so far at night, you can often hear stations from hundred of miles away.
		Here courtesy of Radio and Records is the most recent available Washington DC radio ratings.
	www.mcps.k12.md.us /departments/lansystems/amradio.html (596 words)

	Howstuffworks "How Radio Works"
		When you listen to an AM radio broadcast, your radio is tuning in to a sine wave with a frequency of around 1,000,000 cycles per second (cycles per second is also known as hertz).
		For example, 680 on the AM dial is 680,000 cycles per second.
		FM radio signals are operating in the range of 100,000,000 hertz, so 101.5 on the FM dial is a transmitter generating a sine wave at 101,500,000 cycles per second.
	www.howstuffworks.com /radio6.htm (337 words)

	~fsv
		Right now as you read this there are thousands of radio signals flashing through your house, through your computer, through you, at the speed of light.
		Broadcast radio and TV stations, police and emergency communications, TV transmissions from satellites in space, cellular telephone conversations, airplane pilots talking with control towers, scrambled military messages, shortwave broadcasts from around the world in scores of languages.
		All you need is a radio to capture these radio waves and eavesdrop on all the action.
	www.netwalk.com /~fsv (206 words)

	Cedar Park, TX! (Site not responding. Last check: 2007-08-17)
		The frequency of the station is 1650 on the AM dial.
		This frequency is higher than the older AM range of 510-1620 MHz.
		New AM radios in cars and other radios will be able to receive this frequency.
	www.ci.cedar-park.tx.us /index.asp?NID=183 (304 words)

	New York Radio Guide: A Guide to New York Radio Stations
		The pirates, operating mainly in the Flatbush, East Flatbush, and Crown Heights sections of Brooklyn, were cited for broadcasting on the frequencies of 88.1, 88.5, 94.5, 96.9, 102.3, and 105.5 FM, often sending field strength meters well into the red.
		Even with the FCC`s more aggressive enforcement, pirate broadcasters continue to interfere with FM signals in Brooklyn; listeners who are unable to receive the signals of licensed stations due to pirate broadcasters are urged to file a complaint with the FCC.
		Hungerthon, the annual radio fundraiser for World Hunger Year, will be presenting a full-day multi-station drive on Tuesday, November 22nd, with WFAN (660 AM), WINS (1010 AM), K-Rock (WXRK, 92.3 FM), Sirius Satellite Radio and Air America (WLIB, 1190 AM) pitching in from 6 AM to 9 PM.
	nyradioguide.com (527 words)

	SSTRAN AMT3000 Low-Power AM Radio Transmitter Kit
		Broadcast CDs, MP3 Audio, Internet Radio, Satellite Radio, Cable Radio, FM Radio or Any Other Audio Source to Every AM Radio in Your Home, Back Yard or Even Your Neighborhood.
		Play old-time radio programs from cassette, CD, satellite radio or internet radio and re-create the ambiance of the golden age of radio.
		Treble boost pre-emphasis will compensate for the typically poor high frequency audio response of most AM radios.
	www.sstran.com (627 words)

	AudioKarma.org Discussion Forums - I'm building an AM transmitter
		A far cry from the performance of the tube AM trannies we built when I was a kid...one of which easily went 15 miles.
		Having a local AM transmitter allows the restorer to broadcast his own chosen content through his restored receivers.
		We had one in chicago at one time, AM 850 and its long gone now, since around 1998:(The only AM stations to play 1950's 60s tunes now is AM 1690, but its all the typical oldies that youve heard about a billion times.
	www.audiokarma.org /forums/printthread.php?t=21020 (789 words)

	AM Radio Tips (Site not responding. Last check: 2007-08-17)
		The key to extending the reception range of an AM broadcast* is to improve the quality of the antenna.
		Annoying buzzes are often transmitted through an AM radio.
		Turn it until the noise is loudest and the front or the back of the radio will be pointing toward the noise origin.
	www.kvfcradio.com /amtips.html (446 words)

	Radio magazine - The Radio Broadcast Technology Leader
		Clear Channel Radio expects that 200 of its radio stations will provide HD Radio broadcasts by the end of November 2005.
		It's brand new and immense, but no one has the guts to say it will be big enough.
		The Pick Awards are the original technology award presented at the NAB convention.
	www.beradio.com (229 words)

	Oatbox Crystal Set Project
		Although the project on this page is great, we also have a version of the Oatbox radio that doesn't require soldering and requires a glue gun.
		If you get into the radio hobby and need a ground rod, they can be purchases at hardware stores.
		The Crystal Radio Bonanza covers 3 volumes of our XSS news with lots of projects and info you can't find anywhere else.
	www.midnightscience.com /project.html (1328 words)

	iBiquity - Digital Radio
		HD Radio™ technology is transforming today's analog AM/FM radio to digital, enabling radically upgraded sound and new wireless data services.
		To find out which stations are broadcasting with HD Radio, go to Stations on the Air.
		Backed by industry leaders from within the broadcasting, consumer electronics and automotive sectors, including 15 of the top twenty US broadcasters, iBiquity Digital is the sole developer of HD Radio technology, a technology that has become the standard for digital radio broadcasting and data services in the United States.
	www.ibiquity.com (350 words)

	Mary Wehmeier's Radio Weblog
		Radio: Real broadcast radio, AM, FM, Shortwave, Streaming and via Satellite Notes, information and other things I feel need a parking place will be here.
		On September 11th, I lost several friends in The Broadcast Center on the 110th Floor of Tower One of the World Trade Center.
		The proceeds from this stamp will go to a special fund at the Federal Emergency Management Agency.
	radio.weblogs.com /0100243/categories/onRealRadio/2002/03/11.html (195 words)

	TrinityCam Trinity County Weather Forecast and Information- From Weaverville, local, Northern California, Regional and ...
		Wednesdays between 11:00 AM and 12:00 Noon, a test of the WeatherRadios alarm function is conducted, weather permitting.
		Listing Redding, Eureka and other Area AM Broadcast Stations that are usually audible in Trinity during the day along with other useful information.
		AM LOOP ANTENNA PROJECTS- Boost your Reception at a fraction of the cost of a commercial AM Loop Antenna.
	www.snowcrest.net /wb6fzh/tcwx1.html (1336 words)

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