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Amateur Radio

~500 answered questions
Parent Category: Hobbies & Collectibles
Amateur radio (also called ham radio) is the private and licensed use of selected radio bands for recreational purposes, experimentation, and emergency communication. Amateur radio operates under rules limiting the maximum power and technical characteristics of each transmission.

Subcategories

Depends on many factors. What frequency are you talking on, what are the atmospheric conditions like, how good is your antenna, are you sending code or trying to talk voice, how good is the other ham's receiver, etc. I can tell you that when I first received my license in the mail, my first contact…
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For the benefit of a beginner , the typical VHF communications band is considered around 100 to 170 MHz (2 meters is 144-148 MHz and 220 is 219-225 MHz), UHF around 400 to 500 MHz (70 cm is 420-450 MHz, 33 cm is 902-928 MHz, 23 cm is 1240-1300MHz, also ham bands at 2300-2310 MHz and 2390-2450 MHz). …
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Ham Radio also known as Amateur Radio, is a service and hobby enjoyed by radio enthusiasts around the world. Hams use radio equipment to communicate all over the world. A license is required to operate a ham radio. More information is available from the American Radio Relay League or you can search …
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To become a licensed Amateur Radio Operator, you must pass the FCC examination (About 35 questions) - More information can be found at ARRL.ORG or QRZ.COM
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Ham radio operators use two-way radio stations from their homes, cars, boats and outdoors to make hundreds of friends around town and around the world. They communicate with each other using voice, computers, and Morse code. Some hams bounce their signals off the upper regions of the atmosphere, so …
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Amateur radio or ham radio as it is also known is two-way radio transmissions which are sent by voice, Morse code, or even by computers. You need a license to transmit on the amateur bands (radio frequencies) which are controlled by government departments and various radio organizations throughout t…
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You have to unclip most of the dashboard...that will show you screws that hold the CD player bracket in place
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A telegraph works by sending a series of electric pulses through a long wire, to another telegraph device which then interprets the pulses into a series of clicking sounds. Depending on how long the lengths of the clicks are, there is an "alphabet" called Morse code that the person on the other side…
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the blue cheese association If you are purchasing a two way radio that operates using GMRS frequencies, and plan to use it withing the United States, the Federal Communications Commission (FCC) requires that you register for a GMRS license. Why do I need an FCC license? In the United States, the…
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In free space it's 492 divided by the frequency in MHz. However, there is no such thing as free space in the real world so the better and more accepted formula is 468 divided by the frequency in MHz.It's normally a good practice to cut your dipoles a little long and then trim them down to resonance …
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The frequency. Oddly enough, uhf actually stands for Ultra High Frequency and vfh stands for Very High Frequency.VHF for old TV covered the range 90Mhz to 150MhzUHF for modern TV covers the range 400Mhz to 800Mhz
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UHF is an acronym for ultra-high frequency. Frequencies in the UHF band (300 to 3,000 MHz) are/were commonly used for television broadcasting and such two-way communication applications as cordless phones and walkie-talkie radios.
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Bandwidth is the amount of information that can come through. The frequency is how quickly the information can come through.
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The length of a quarter wave for constructing one end of a dipole is:234/MHz = feet of wire.For instance if you have an 80 meter ham radio transceiver and want to construct a dipole to match a frequency of 3.56 MHz (the low power calling frequency) then234/3.56 = 65.7 feetNext buy a spool of speaker…
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Try re-submitting the question with more detail on exactly what you want to know !
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In the present day and age ... the middle of 2013 ... the telegram as a means of sending text messages has several new and devastating disadvantages. It is now virtually impossible to use a telegram, since there is no telephone number and no office to give over your message, no network through wh…
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The first radio used visible coiled wiring and a large circular wire antenna. It did not have a case or speakers built into it and did not look like what a person of today might expect a radio to look like. The first designs of a functional radio were created in 1888 by Heinrich Rudolf Hertz after s…
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You can use co axial cable to make a very effective FM antenna. Simply just strip back the insulation and then separate the two parts of the cable. This will make a very good dipole antenna.
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Wal-Mart sells more bananas than any other item!
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Amateur radio is useful for: 1. Having fun talking to other hams around the world, or simply in your own town. 2. Keeping emotionally healthy. (Astronauts, most of whom are hams, talking to us hams on the ground.) 3. Passing emergency traffic across the land. 4. Providing communications between …
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Amateur Radio (ham) sets are of varying quality and design. Some are quite simple and others are very elaborate, each doing basically the same thing which is transmitting a radio signal over the airwaves for non-commercial use. Ham radio operators require licensing by the FCC in the United States.
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How information is disseminated by radio satellite television and Ham radio during disasters? Answer-Satellite communication can be used for early warning besides creating awareness and education in the disaster prone areas. One of the early warning systems developed at the center is the Digital Cyc…
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A conventional VOR (CVOR) has three Amplitude Modulated (AM) signals encoded on a VHF carrier: 1) a 30 Hz variable (VAR), which is modulated by the antenna, not the transmitter; 2) a 9960 Hz subcarrier, which is in turn frequency modulated (FM) with a 30 Hz reference (REF) signal; 3) and a voice …
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Any method of non-wired communication can help in a disaster.
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HR Puffinstuff was a children's show. Starting in 1969, the show was based on the life sized puppet-like Puffin stuff, living on a magical island.
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Original Answer: Yes, the wide blade of the polarized plug would connect to the chassis of the radio. Another solution to the potential shock hazard would be to use an isolation transformer between the radio power plug and the power outlet. Correct Answer - NOT YET! Depending on which wire you choo…
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SR-955 is one of the best Amateur radios.
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The Revell KIT 1 was an inexpensive regen radio, circa 1962ish. I belive it was a 2 transistor multiband radio. I had one, and am looking for one now to complete my nostalgia collection. If you know of one for sale, any condition let me know.Regards,Dennis Merritt/WB6UHQ@ARRL.NET
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The word amateur comes from the Latin "amat" meaning he (or she !) loves. An amateur is a person who does something for the love of it, not because he has to or makes money at it. He is usually knowledgeable, often beyond the level of many professionals; every amateur was a beginner once, but it doe…
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We use electromagnetic rays in radio transmission, but we usually call them waves or radiation rather than rays. There are electromagnetic transmissions for all forms of radio communication. The different "kinds" of radio transmissions are properly referred to as modes, such as AM, FM, SSB, CW, etc…
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Radios are radios . . . some are used by broadcasters, some are used by the military, some are used by ordinary people, and some are used by amateur radio operators (Hams). Guglielmo Marconi invented the radio. (Goo-LYEL-moe marr-CONE-ee)
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Power is best run directly from the battery. The power lines in the cab often do not carry sufficient, clean power. Just connect to the battery and route the wire through any available grommet or other opening in the firewall or drill and grommet a small hole in a safe location. As for antennas, it …
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The strength of radio transmissions are expressed in "watts of power", not in voltage. Transmission strength might be weak (eg., 20 watts for my small amateur transmitter) or quite strong (eg., 50,000 watts for WSM in Nashville, Tenn.). OK: For there to be "watts of power" there must be voltage an…
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As far as I know the only ham radio operator ever to talk to a UFO was Art Bell. No. UFOs do not exist. There are no aliens. Improved answer: Yes we in the Ham biz have talked to UFO's , they are intelligent little people that appreciate our hospitality . Some of our members have been treated to …
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An amateur radio operator is one who can do anything legal with radio communications, but is not paid to do them.Some hams have been very successful at putting up ham radio satellites into orbit, the first of which was the OSCAR series in the early 1960's.(OSCAR = Orbiting Satellite Carrying Amateur…
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A gamete is haploid
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If you are talking about the fraction bar in mathematics, the "fraction bar" is the real name. It is sometimes called a vinculum (although this is a misuse of the word). The fraction bar in amateur radio, also known as the forward slash is officially known as the "fraction bar."
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Hi, You can buy GWS Airplanes from this site www.rshobbies.com/rc_airplanes.asp?pg=3. (cut & paste the link). All GWS Airplanes comes as an ARF kit ( Almost Ready to Fly kits). You'll need to build them up which will take 5-10 hrs or couple of evenings. If you are a beginner you might want to bu…
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HAM stands for Help All Mankind .answer 2 Nice try, but no cigar! Ham is a derivative of amateur, in the same sense as on the stage. Amateur Radio.
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Ham radios are vehicles for communication. They provide a platform for the exchange of information or data in emergency situations or in disasters. The amateur radio service is founded on a pledge that includes public service, and radio amateurs, the "hams" who use the equipment, are sometimes the o…
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Groups of hams get on the air and sign into what are called nets. In a net, the net controller in charge of this emergency net will say something like: "All station check in, and do you have any priority traffic?"and say during the hurricane, your daughter had been swept under by the water and neede…
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Many disasters involve the crippling or destruction of normal communications methods: Telephone (especially cellphone) networks may be overloaded.Electrical power may be unavailable (especially at a disaster site). Radios and radio systems that are portable and battery (or generator) powered can avo…
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Ham Radio is different then regular common radio in many different aspects. First you need a license to operate on ham (amateur) radio. A license is very easy to obtain and requires you to take a multiple choice exam. There is a nominal fee and the exam is administered by a VEC (Volunteer Exam Commi…
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The government itself does not use amateur (ham) radio. There are thousands of licensed ham radio operators who volunteer to help when the government asks for help. These hams have expensive portable radios, antennas, antenna tuners, batteries, and so forth, that they purchase with their own money
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Answer #1: I have the same problem in my 03 P-71 crown vic . I tried two different radio's both base AM/FM Radio's. neither one works. the radio will light up with the parking lights on but no radio station number lights or sound. it has the the standard harness. is there a fuse or something else…
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To be very technical, it depends on what the 'm' means in the question. If the frequency in the question is 5 mHz = 5 mega-Hertz then mega = million, 5 mega = 5 million so 5 mega Hertz = 5 million Hertz. 5 mHz = 5 million cycles per second But a small 'm' often means 'milli'. That's probabl…
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There are lots of facts about radio. Any particular one you are interested in?
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The process is very complicated, but I can simplify it here. A signal starts as a wave in the oscillator of the radio. You speak into the microphone, and this produces another wave at your voice frequency. These two signals go into the modulator, which uses the voice signal to encode the wave from t…
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AM means amplitude Modulation. there are different frequencies. Public utilities use AM mode in the Megacycle range- such as Departure Control- leave that Sominex alone. sorry. AM has its drawbacks, but covers a lot of ground in commercial and some Ham stations. FM has better sound quality and fidel…
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The main reason the United States put an embargo on Cuba was because of pressure from US business whose property had been nationalized by the Cuban government without payment. Another reason for the embargo was pressure from refugees and immigrants from Cuba, who favored actions taken against Castro…
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He was not a pirate operator. He was only using a receiver and trying to tune in radio Luxembourg. There is a nice article here: http://www.dailymail.co.uk/news/article-515138/FOUND-Radio-Hams-sensational-tape-bank-heist-rescued-compromising-pictures-Princess-Margaret.html The article states that …
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The first electrical telegraphs used Morse Code, sent as long and short electrical impulses along wires.
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It depends. The FCC (Federal Communications Commission) banned the manufacture of scanners and Ham Radios that can receive cell phones years ago. The manufacture of radios with this capability available is no longer available however, it took several years before this was changed. The cell phone sig…
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The radio was created by a bunch of smart, geeky guys who have nothing better to do but mess around with that Sugar Honey Ice Tea!!!!!!! You people ARE SO ANNOYING WITH ALL OF YOUR QUESTIONS. JESUS CHRIST!!!!!! SEARCH IT UP, YOU LAZY PEOPLE!
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Radios allow you to get information about weather and they are easy to use. They do not have a monthly bill like television. They are an affordable way of entertainment that keeps you updated on all the latest gossip, songs, weather, and basically everything.
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Most people just use the name Fraction Bar. Some people call it the Division Bar, too.
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Radiowaves are used for television broadcasting, radio signals, and heart rate monitors.
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The Morse code was invented or discovered for telegraph use by Samuel F.B. Morse in about l84l/ There are differences between landline and radio (International) Morse in that some characters or codes are different. International Morse is the standard employed in Ham radio.Wireless telegraphy did not…
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Such a radio was commonly called a Crystal Set .
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Among the earliest radio receiving devices, the Crystal set, sometimes called a cat's whisker detector, utilized a small piece of Galena crystal [a Lead mineral] that converted high frequency radio waves into audible sound. The device was self-powered and did not require any external energy. In its …
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At the resonant frequency, the speaker efficiency is greater so the sound will be louder. For voice radio, a resonance near 2500 Hz might improve intelligibility. For music radio, a resonance at about 200 Hz will enhance the perceived bass from the radio. For high fidelity sound, a flat response fro…
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The best place to get started getting your ham license is to go to www.arrl.org look in the dark blue header for Classes then fill in your zipcode and you are on your way. The Classes area will show you the time and place for the next set of License Classes and that's it. The friendly hams at the m…
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Pretty small. 2nd Answer: In the amateur radio bands, some of the lower frequencies have wavelengths of 160 meters. This is not even the lowest frequency that radio can be sent. On the other hand, the higher frequencies may have wavelengths measured in centimeters. (A centimeter is about the widt…
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The flow chart follows this pattern; Transceiver to amplifier then out to swr meter, then into antenna tuner then out to antenna.
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No. SWL (shortwave listening) can not be done with a typical radio scanner. A typical radio scanner receives FM signals. Most shortwave is either AM or SSB, neither of which can be received by FM radios. Receivers that can be used for SWL are very common and are not very expensive. I've bought sever…
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In times of crisis and natural disasters, amateur radio is often used as a means of emergency communication when wireline, cell phones and other conventional means of communications fail.Unlike commercial systems, Amateur radio is not as dependent on terrestrial facilities that can fail. It is dispe…
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Radio RadiorsonRadio RadiorsonOkay Whatever Here is the answer:Marconi is sometimes given credit and considered the "Father of Radio". It was Nikola Tesla who invented the radio in 1891.
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The advantages of producing your own radio show is that you have only your own guidelines to follow. The disadvantages of producing your own show is that you may endure many fees associated with licensing.
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nothing
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Ham radio is used daily woldwide. Emergency communications during hurricane Katrina is a good recent example. We were able to pass information into and out of New Orleans without any need for cell towers, phone lines, commercial power, internet etc. Ham radio works when nothing else does.
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HOW MANY HAMS ARE THERE? Latest FCC Information Posted Aug 10, 2012 Currently Tech........369,129 Tech Plus.........1 Novice.......16,040 General.....167,271 Advanced.....59,046 Extra.......132,646 Club.........11,739 Total US....755,872 High........755,881 August 10, 2012 http://www.hamd…
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Grounding is accomplished by connecting a heavy cable from the ground side of the antenna to a ground rod. A ground rod is typically a 4 - 8 foot copper plated steel rod driven into the ground as close as possible to the antenna, making the wire connection as short as possible. All equipment should …
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"73" in amateur radio shorthand means "Best Wishes".
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a 2 with a circle around it,is the marking for sprague. If you have this,you have a sprague capacitor.
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Mercury would only appear an an old tube radio which uses a mercury-vapor rectifier. These are pretty rare, and glow either green or blue, as opposed to a normal tube's orange/red color.
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The radio wave from the space are mostly released by stars and other matters in the sky and most likely when they are emitting energy .For example , although hydrogen emits no light , it does emit energy at a specific wavelength in the electromagnetic spectrum .
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Maybe you actually meant Internet radio, as in device. Pandora is an internet radio service, and is one in 10,000 or more through the world. I do use Pandora, and have a paid account on Pandora, however, the internet radio I use to do this is made by Grace Digital, and is called a Mondo. The Mondo w…
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Well, it depends on 2+1 things: The first two things are: Age Condition The last (+1) is the human factor; how much is somebody willing to pay for it. I have received a grundig for free, bought one for $75, and have seen them on eBay for over $600 and $1000. Although I don't believe they are wo…
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I doubt you'd find one ! NiMH batteries charge to 7.2 volts NOT 9 volts ! Trying to charge one to 10 volts is overcharging by almost 50% !This will certainly shorten the life of the battery and COULD result in overheating and/or explosion !
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If you want to listen to police scanners for free, download free online scanner from the link below. This program is free, therefore you can't control the scanner but you can find one close to your area to listen to.
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They work the same in a storm or out of one. Perhaps you are thinking about storm trackers etc. Where individuals who are often ham radio operators track severe weather and pass the information to the national weather service for distribution to the public to provide weather safety guidance etc. .
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Ham radio is a service, a broadcasting spectrum- including both CW ( code) and Phone ( Voice radio) in various bands and segments. It was not a one-man invention but it evolved- as a concession on the part of the FCC and predecessor organizations ( oddly the maritime end of the Dept. of Commerce) to…
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Using HF (high frequency 3-30mHz) to talk to area hams in a converstional formatUsing HF to communicate with hams in other parts of the US and around the worldContesting . . . see how many other hams you can contact in the contest period.Message handling for military person . . . MARS (Military Affi…
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 Discovered by a man named James Maxwell Interesting facts about radio waves. 1) They can bounce around the earth. 2) They can bounce off of clouds. 3) They can travel great distances with very little power. Look up QRP in Wikipedia. 4) You can talk to space craft hovering out in space wit…
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It means "from" and it probably comes from the French word "de". It was adopted by Morse code operators because it is much faster to send "de" than "from". At the close of a transmission, it means "this is."
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QSK is one of the "Q-signals" used in Morse code communication. It refers to "full break-in" operation; that is, where the sender's receiver can hear other signals in between the dots and dashes that are being sent. It allows another person to "break into" the communication. Not all transmitter/re…
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go to your local craiglist , go under personals, and have him brows w4m or make a post on m4wor send him to a brothel for his B-day.
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Lots of people now own a DAB radio. Borrow one and try it out in your location. If no one has a DAB radio in your area, it's likely that there is no reception there. Also do a Google search for DAB coverage. Most broadcasters provide coverage maps for DAB reception.
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Technician, General, and Extra are the three levels. The Morse code is no longer needed to pass any of the tests. The American Radio Relay League (www.arrl.org) has plenty of great information on ham radio.
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The egg cell "ovum" only has half the genetic material, so it is haploid.
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Advertising, news broadcasting, and entertainment.
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AM - amplitude modulationMHz - Mega Hertz. The M means one million (1000000).
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You could talk to Pluto, but I doubt anyone would answer.
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Yes you can but if you want any faster you need to upgrade the esc.
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The E designates the European version with EU frequency ranges and repeater channels/offsets which differ from the US R version.
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There are three classifications (Technician, General, and Extra) of ham radio operators. Depending upon the band or frequency they are operating on and license class, some bands only allow 25 to 100 watts of power. The maximum power that a ham can operate with is 1500 watts. This is controlled by th…
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The Diode only lets the current one way, the cap smooths it out, and the resistor gives you something to take a voltage reading across. it will be kind of sawtooth, but will have the general envelope shape.For diagram see related links below.
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