I really cannot tell you just how great a solar or crank radio is. I have now had mine for over 11 years and it is still going
It may be spattered with paint, the solar panel may be a little cloudy because I left it out in the rain but it still works. They really are a great item that everyone should own. Not only do they save a lot on electric but they also are extremely portable and it means that you can listen to the radio anywhere that you go.
I love the fact that I can take it with me anywhere and simply set it down and turn it on. If there is no sun then a quick crank of the handle and it works for hours. Of course the new designs are much more efficient now and it seems that the newer models require even less turning or winding for them to work for hours. This is great news for anyone looking to buy one now.I also noted that many of them also have a great little torch feature which means they are an even more versatile piece of equipment that is sure to come in handy in so many environments. There are also now many available that have a great feature where you can plug in your mobile phone, this really does make them the perfect item to take with you when walking, hiking, or out for the day.
If you have been considering buying one then you will be pleased to note that they are available at a very low cost and they really do last for years and years as I can attest. Mine is well over 11 years old and still going strong. Buy one today and you will not regret it one bit.
Friday, March 19, 2010
anline radio frequencies
Ham Radios are actually pretty simplistic in their operation. They depend on radio waves to get their message out.
Radio Frequencies
Hams use a variety of radio frequencies to communicate. Non-hams can hear what is being transmitted via their own receivers or scanners, but cannot participate in the action without a transmitter or a license. The ham operator can only use certain radio frequencies to transmit from these frequencies are allocated by the FCC for amateur use. Hams may operate from just above the AM broadcast band to the microwave region, in the gigahertz range. Most of the Ham Bands are found in the frequency range that goes from above the AM radio band (1.6 MHz) to just above the citizens band (27 MHz). Certain bands are dedicated during certain times of the day. The day time hours find 15 to 27 MHz is used for long distance transmission. During the night time hours 1.6 to 15 MHz is used for long distance transmission.
The bands are called "short wave" bands which are unlike frequencies used by FM radio stations and TV stations. FM radio and TV stations use what is known as line of sight bands, these bands only travel 40 or 50 miles. Short waves use the airwaves to bounce the signal off the ionosphere from the transmitter to the receiver's antenna. The higher the frequency is, the "shorter" the wavelength is.
Generally hams get their beginning on VHF FM, using small hand-held transceivers which transmit on one frequency than receives on a different one.
They use FM repeaters that have been put in place by local radio clubs. The repeaters typically use space that is owned by local Television stations. These repeaters are set up on large antennas that the TV station uses to transmit its signal. The repeaters uses transmit and receive pairs to relay information back and forth. Frequency pairs are set up by Ham Radio groups and are kept at a long enough distance from each other not to cause interference.
There is new cutting edge technology that is coming more and more into use. Instead of using these repeaters to catch a signal and send out communications, some hams are able to use satellites.
Equipment
Historically Ham Radios depended on a series of tubes and electrodes to send out and receive a signal, some amateur radio aficionados still use this system but the majority have moved into the digital age and largely no longer use radio tubes to transmit and receive.
There can be a couple of different ways that Ham Radio is able to transmit. The oldest form of Ham Radio that is still widely in use today is to have two separate parts, a receiver and a transmitter. The receiver pulls in the signal from other hams and the transmitter sends the signal out. There are also transceiver's these send and accept signals in one unit. This type of equipment is usually found as hand held's and mobile units.
Most serious Ham's prefer the two separate units with a separate antenna, to reach longer distances. Antennas of course play a huge roll is Ham operations. The most used 146-MHz (2-meter) antenna is a 19-inch quarter-wave whip. It has a wavelength of 146 MHz approximately 2 (300 divided by 146) meters, and a quarter wave of 2 meters is about 19 inches (50 cm). Hams have devised some unusual antennas and revel in finding one that works.
How to Communicate
In some cases the ham will speak into either a stationary microphone that sits on a surface and looks much like the type of device that singers use, some choose the handheld microphone that has the buttons on the side to send their voice out over the airwaves.In some cases the ham operator will use Morse code to communicate, while it is not necessary to know Morse code when using a ham radio it is beneficial to know it. Morse code can often be detected when the radio waves are not strong enough to carry the complex inflection of voice but can efficiently carry the beep tones of Morse code.
Radio Frequencies
Hams use a variety of radio frequencies to communicate. Non-hams can hear what is being transmitted via their own receivers or scanners, but cannot participate in the action without a transmitter or a license. The ham operator can only use certain radio frequencies to transmit from these frequencies are allocated by the FCC for amateur use. Hams may operate from just above the AM broadcast band to the microwave region, in the gigahertz range. Most of the Ham Bands are found in the frequency range that goes from above the AM radio band (1.6 MHz) to just above the citizens band (27 MHz). Certain bands are dedicated during certain times of the day. The day time hours find 15 to 27 MHz is used for long distance transmission. During the night time hours 1.6 to 15 MHz is used for long distance transmission.
The bands are called "short wave" bands which are unlike frequencies used by FM radio stations and TV stations. FM radio and TV stations use what is known as line of sight bands, these bands only travel 40 or 50 miles. Short waves use the airwaves to bounce the signal off the ionosphere from the transmitter to the receiver's antenna. The higher the frequency is, the "shorter" the wavelength is.
Generally hams get their beginning on VHF FM, using small hand-held transceivers which transmit on one frequency than receives on a different one.
They use FM repeaters that have been put in place by local radio clubs. The repeaters typically use space that is owned by local Television stations. These repeaters are set up on large antennas that the TV station uses to transmit its signal. The repeaters uses transmit and receive pairs to relay information back and forth. Frequency pairs are set up by Ham Radio groups and are kept at a long enough distance from each other not to cause interference.
There is new cutting edge technology that is coming more and more into use. Instead of using these repeaters to catch a signal and send out communications, some hams are able to use satellites.
Equipment
Historically Ham Radios depended on a series of tubes and electrodes to send out and receive a signal, some amateur radio aficionados still use this system but the majority have moved into the digital age and largely no longer use radio tubes to transmit and receive.
There can be a couple of different ways that Ham Radio is able to transmit. The oldest form of Ham Radio that is still widely in use today is to have two separate parts, a receiver and a transmitter. The receiver pulls in the signal from other hams and the transmitter sends the signal out. There are also transceiver's these send and accept signals in one unit. This type of equipment is usually found as hand held's and mobile units.
Most serious Ham's prefer the two separate units with a separate antenna, to reach longer distances. Antennas of course play a huge roll is Ham operations. The most used 146-MHz (2-meter) antenna is a 19-inch quarter-wave whip. It has a wavelength of 146 MHz approximately 2 (300 divided by 146) meters, and a quarter wave of 2 meters is about 19 inches (50 cm). Hams have devised some unusual antennas and revel in finding one that works.
How to Communicate
In some cases the ham will speak into either a stationary microphone that sits on a surface and looks much like the type of device that singers use, some choose the handheld microphone that has the buttons on the side to send their voice out over the airwaves.In some cases the ham operator will use Morse code to communicate, while it is not necessary to know Morse code when using a ham radio it is beneficial to know it. Morse code can often be detected when the radio waves are not strong enough to carry the complex inflection of voice but can efficiently carry the beep tones of Morse code.
Anlineradio scanners
Radio Scanners are Not Illegal
Virtually all you will hear on its frequencies is legal. There are no legal restrictions if scanners are used at home. What is illegal is utilizing the info heard on the scanner to commit a crime or use it for financial gain. There may also be a few restrictions in using them while in a vehicle; it depends on the state. But deciding to
buy a radio scanner is legal.
The following is a list of what you can expect from a radio scanner. Not all devices have these features, so remember that as you shop for a scanner.
Base vs. Handheld Scanners
The base or mobile scanners are for use on base stations or a vehicle. The sound is louder and quality is better than handhelds. The keypads and displays are also larger. They also come with a power supply.
In terms of performance, the mobile scanners are better than handhelds. They have greater coverage and less susceptible to interference. However, handheld scanners are more convenient and can be carried by an individual.
If you don't plan to bring the scanner with you, buy a radio scanner of the mobile variety. If you want something you can take while traveling, the handheld is the better option.
Number of Channels Available
This determines how many systems you can tune in to. A scanner with limited channels means you have to reprogram it whenever you want to check out another agency. If you just listen to the sheriff's department, 20 channels will be sufficient.
But if you live in the city or metropolitan area, you'll need more channels. In these places each city will have their own department, each with 5 to 10 frequencies. This doesn't even count in the state and county police.
If you want to listen to civil / military aircraft, fire department, etc. you'll need to buy a radio scanner that can accommodate 200 to 1000 frequencies.
Using Banks
On scanners with plenty of channels, the user can organize them into banks. The banks are used to cluster channels that share a common topic. That is, you can put all law enforcement frequencies on bank 1, fire/medical on bank 2, aircraft on bank 3 and so on.
Search Mode
A scanner with a search mode option allows the user to look for systems on unknown channels or frequencies. Unpublished frequencies include those of NASA, the FBI and many more. The search option on scanners is often customizable. The search speed will vary per scanner though.
Virtually all you will hear on its frequencies is legal. There are no legal restrictions if scanners are used at home. What is illegal is utilizing the info heard on the scanner to commit a crime or use it for financial gain. There may also be a few restrictions in using them while in a vehicle; it depends on the state. But deciding to
buy a radio scanner is legal.
The following is a list of what you can expect from a radio scanner. Not all devices have these features, so remember that as you shop for a scanner.
Base vs. Handheld Scanners
The base or mobile scanners are for use on base stations or a vehicle. The sound is louder and quality is better than handhelds. The keypads and displays are also larger. They also come with a power supply.
In terms of performance, the mobile scanners are better than handhelds. They have greater coverage and less susceptible to interference. However, handheld scanners are more convenient and can be carried by an individual.
If you don't plan to bring the scanner with you, buy a radio scanner of the mobile variety. If you want something you can take while traveling, the handheld is the better option.
Number of Channels Available
This determines how many systems you can tune in to. A scanner with limited channels means you have to reprogram it whenever you want to check out another agency. If you just listen to the sheriff's department, 20 channels will be sufficient.
But if you live in the city or metropolitan area, you'll need more channels. In these places each city will have their own department, each with 5 to 10 frequencies. This doesn't even count in the state and county police.
If you want to listen to civil / military aircraft, fire department, etc. you'll need to buy a radio scanner that can accommodate 200 to 1000 frequencies.
Using Banks
On scanners with plenty of channels, the user can organize them into banks. The banks are used to cluster channels that share a common topic. That is, you can put all law enforcement frequencies on bank 1, fire/medical on bank 2, aircraft on bank 3 and so on.
Search Mode
A scanner with a search mode option allows the user to look for systems on unknown channels or frequencies. Unpublished frequencies include those of NASA, the FBI and many more. The search option on scanners is often customizable. The search speed will vary per scanner though.
internet anline radio
Almost one billion people use Internet daily all around the world. More than 80% of the population in USA has access to Internet from their homes and from work. The number of Internet users is increasing at a massive rate and almost 15% of these users listen to online radio stations through online tuners that provide a wide range of genres and stations of all types.
Most times, radio tuners on the web can provide a more comprehensive and large list of radio stations, unlike terrestrial networks that provide a relatively limited list of stations. Basically, anyone that has a good internet connection, a good computer and a stereo system, can listen to radio stations online. Unlike traditional radios, internet radio is not geographically limited.
Internet online can be a solution for those communities that would not have enough fans to support a internet station in their city, but if we add listeners from around the world, the chances will increase dramatically.
Online radio tuners have the advantage and the possibility of informing listeners about the audience number, the title of the radio stations played, the current song playing, the artists the sings and the genre.
IR can be a powerful marketing tool and a big source of income for its founders. The first thing you need to do when you own an IR is get your "experimental product" to be liked by the consumers before they become regular users. Message boards and forums can create community fans, from which you can gather information in a database.
Internet radio attracts a significant amount of media and investors attention, so both IR founders and listeners can enjoy the benefits of this powerful tool.
Most times, radio tuners on the web can provide a more comprehensive and large list of radio stations, unlike terrestrial networks that provide a relatively limited list of stations. Basically, anyone that has a good internet connection, a good computer and a stereo system, can listen to radio stations online. Unlike traditional radios, internet radio is not geographically limited.
Internet online can be a solution for those communities that would not have enough fans to support a internet station in their city, but if we add listeners from around the world, the chances will increase dramatically.
Online radio tuners have the advantage and the possibility of informing listeners about the audience number, the title of the radio stations played, the current song playing, the artists the sings and the genre.
IR can be a powerful marketing tool and a big source of income for its founders. The first thing you need to do when you own an IR is get your "experimental product" to be liked by the consumers before they become regular users. Message boards and forums can create community fans, from which you can gather information in a database.
Internet radio attracts a significant amount of media and investors attention, so both IR founders and listeners can enjoy the benefits of this powerful tool.
anline radio broadcasting news
What is broadcasting?
Broadcasting is the distribution of signals, video or audio, to an audience like the general public or communities. A big part of the media is focused on broadcasting, through which can access a wide range of listeners and viewers all over the world.
What is Webcasting?
Webcasting was invented in 1993 and it meant streaming music or videos through streaming media technology to a mixture of listeners and viewers anywhere in the world. Using pretty cheap and accessible technology to webcast, has lead media to an outstanding evolution.
Internet radio stations primary targets are the listeners and not the advertisers unlike the commercial radio stations on the classic airwaves, because most of the times, the listeners are the source of income. Money come depending on the record sales and are distributed mostly to blockbusters artists and not to those artists whose songs are streamed by one specific radio station.
To operate an internet radio stations, owners need a specific type of broadcast license that varies worldwide from country to country. Indeed, internet radio has its issues, like copyright, licensing and advertising but there are too many things to cover in just one article.
The main goal of IR is covering an overall area of listeners that own a computer with a good internet connection. In the near future, this can all change and simplify due to the rapid evolution of technology, internet radio could be enjoyed worldwide through portable wireless devices. IR will become widespread.
During a very short period of time, Internet radio has outrun the terrestrial and satellite networks and has become commercially successful.
Broadcasting is the distribution of signals, video or audio, to an audience like the general public or communities. A big part of the media is focused on broadcasting, through which can access a wide range of listeners and viewers all over the world.
What is Webcasting?
Webcasting was invented in 1993 and it meant streaming music or videos through streaming media technology to a mixture of listeners and viewers anywhere in the world. Using pretty cheap and accessible technology to webcast, has lead media to an outstanding evolution.
Internet radio stations primary targets are the listeners and not the advertisers unlike the commercial radio stations on the classic airwaves, because most of the times, the listeners are the source of income. Money come depending on the record sales and are distributed mostly to blockbusters artists and not to those artists whose songs are streamed by one specific radio station.
To operate an internet radio stations, owners need a specific type of broadcast license that varies worldwide from country to country. Indeed, internet radio has its issues, like copyright, licensing and advertising but there are too many things to cover in just one article.
The main goal of IR is covering an overall area of listeners that own a computer with a good internet connection. In the near future, this can all change and simplify due to the rapid evolution of technology, internet radio could be enjoyed worldwide through portable wireless devices. IR will become widespread.
During a very short period of time, Internet radio has outrun the terrestrial and satellite networks and has become commercially successful.
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