The History of the 2 way radio

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Again another short article i thought was remarkable around the subject matter of 2 way radio mounts’s, what would you do if i didn’t post this ehh? you would have to look at the initial article, the chances that you found it could be slim, so think yourself blessed that i have shared this excellent short article with you.

Radios are one of the means of communication that are used widely and popularly. One of the best things about a radio is that it can be easily carried from one place to another. Radios are of various types. A broadcast radio is the one that only receives content and cannot transmit it back. A two way radio is the one which can receive as well as send content or signals. It is the most popular type of radio used these days.

A Walkie Talkie is available in many different configurations. A few of the popular configurations include the hand held portable configuration, mobile configuration and the stationary base configuration. The hand held portable configuration can be carried from one place to another and are easy to use. It is also called a walkie talkie. The mobile configuration is the one in which signals can be received and transmitted at the same time. The mobile configuration is very easy to use and can be conveniently carried from one place to another. The stationary base configuration is the one which cannot be carried around but is very easy and convenient to use.

The use of this type of a radio can be traced back to the use of transmitters and receivers that were used to exchange messages wirelessly. The first two way radio was developed in Australia in the year 1923. The Victorian Police were the first ones to use this type of a radio for wireless communication in cars. This made it very convenient to communicate. Later with the development in radio technology, most vehicles were installed with two way communication radios. These transceivers were very popularly used in World War II.

A two way radio operates at different frequencies. In addition, the frequency for each country is different. There are several factors that determine the frequencies at which two way radios operate. These include licensing conditions set by the government in each county, the licensing regulations, availability of radio frequencies, the type of area in which radio signals have to travel, interference and noise levels that are present during transmission and reception of signals etc. The type of area affects the frequencies at which radios operate. Radio signals cannot easily travel across certain areas like forests and rural areas. So whenever, a frequency has to be set for these types of radios, it has to be ensured that the area is taken into consideration. Frequencies also have to follow the regulations that have been set so that they do not interfere with other frequencies.

Each frequency is known by a channel number mainly because it is easier to remember a channel number than remembering a frequency in hertz. Most radio service providers use channel numbers instead of frequencies and even the users find it more convenient. Also all radio signals have to follow a communication protocol. This is important so that radio stations can cooperate with each other for providing radio signals. This also ensures that one radio station does not interfere with another station.

Fayette, Somerset to join first responder radio network

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Two more counties plan to join Armstrong and two other counties’ Inter-County {motorola 2 way radio|{2|Two} way Radio|Walkie talkie} System to provide unified communication lines for emergency responders.
This year, Fayette and Somerset counties plan to start using the Inter-County Radio System, a regional radio network that allows first responders to communicate directly with each other across countylines, joining Armstrong, Westmoreland and Indiana counties. Their participation will lower the annual cost of maintenance and software upgrades, said Armstrong County 911 coordinator Ron Baustert.
The Inter-County Radio System’s warranty through Motorola, which covers system maintenance and software upgrades, expires next year. The counties plan to share the cost of the annual upgrades, and Armstrong expects to pay $340,000 annually. If more counties join the program, Baustert said, the price will drop for each county.
On Thursday, Armstrong County officials adopted a charter and governance documents, which the three participating counties developed, setting rules and cost-sharing measures for the {radio|{2|Two} way Radio|Walkie talkie} system.
We’re excited to see the system grow, since it started with just Armstrong and Westmoreland counties, Baustert said. There are already othercounties looking into the program, so this could very well become a radio network serving all of Southwestern Pennsylvania.
The system relies on 800 MHz digital radios and 14 high-powered communication towers throughout each county.
Armstrong County started using the Inter-County Radio System last June. The system provides all emergency responders in the counties with the same radio system.
There are common channels for everyone to use for major incidents, and it makes it easier to communicate with other responders, no matter their discipline, Baustert said. With our old system, we maybe had 50 percent coverage, but now, we’re experiencing 99.7 percent coverage across the county.
Baustert said officials began building the radio system in 2010, and started using it last June.
He said the new system allows for better communication between all emergency officials, especially along the county lines.
We interface every single day with other departments across the county lines, Baustert said.
Now, they’re all able to talk to each other, when they couldn’t before.

walkie talkie code namesRead more:http://triblive.com/news/armstrong/6234153-74/county-system-counties#ixzz35HjmvxjQ
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Ericsson and Kodiak in Europe Two way radio-style push-to-talk push

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My basic review of a new two way radio communication language it begins well, looks pretty cool, is easy to run and very energy efficient, the two way radio ebay really is a top quality product. I’m happy I bought it, read more below.

The world is stuffed with really awesome, well written articles. If you find one which catches your eye, you have to post it, well i do! so with permission of the original writer i’ve posted this to enjoy

Push-to-talk company Kodiak has struck a deal with Ericsson to sell the systems it is currently touting to the US market through American firm Cspire to European telcos. The pair are aiming to sell these services to both real mobile network operators and virtual ones.

The technology emulates an old-fashioned walkie-talkie using 4G, Wi-Fi and cloud services. Ericsson hosts the technology platform provided by Kodiak Networks in Ericsson’s Romanian data centre. The duo are targeting it at construction, hospitality, security, oil & gas, utilities, manufacturing, field services, education and transportation.

They are not aiming it at the mainstay of PTT – the emergency services – as being IP-based, it’s too laggy. The example the Tetra community loves to give is that of a commander with a team of snipers giving the order “don’t shoot”, and the first half of the message getting lost as a result of latency.

One of the great advantages of PTT is that it is one-to-many. The boss of a taxi company could let all his drivers know that Tower Bridge has lifted or that Hanger Lane is packed with traffic.

The Kodiak client runs on a number of phones, including Androids and iPhones, but it is those with dedicated PTT buttons such as the Samsung Rugby flip phone and the NEC Terrain which make the best use of it.

Unlike previous attempts to sell PTT, it’s not aimed at consumers. Around a decade ago, Orange decided that Kodiak’s 2G-based PTT was perfect for teenagers and that pushing to talk, message, or send a picture was the “new SMS”. Unfortunately the latency was appalling – of the order of a minute – and teenagers decided that having a conversation where only one person could speak at a time was not a good idea.

After having told handset manufacturers that they would not get any orders unless they built PTT based on the Kodiak codec into phones, Orange then gave up on the idea and neglected to order any of the expensive devices. Ericsson’s head of IT managed services, Luigi Migliaccio says that he thinks that attempt to sell PTT was before the technology was ready and that today there may be an opportunity based around the smartphone clients.

We have seen a respectable GSM implementation of PTT in Europe, this was GSM-R a standard particularly designed for Railways. Ericsson made the hefty 330g R250s PRO handset which supported it, but GSM-R never really took off – with even the targeted market of railways falling to adopt it. Many of the markets Ericsson is aiming at are currently catered for by Tetra, which is a technology that is running out of steam. The Tetra market is expecting to go 4G but wants updates to the specification. Migliaccio says that the updates are in the works and Ericsson will implement them when they are finished.

Kodiak claims a “sub-second” latency for its product but Tetra is specced to 200ms – although in practice systems often fail to achieve this. It would take some practical demonstrations to prove to the customers that not only was the latency acceptable, but that it didn’t lead to any loss of information.

Something the cloud-based solution won’t be able to do is fall back to a device-to-device Radio. Tetra devices can, in the event of the failure of the network, communicate directly with each other.

Ericsson has higher hopes for the latest implementation and point to American success with Cspire, although this will to some extent come from the closure of Nextel, which offered a PTT service and had a strong blue-collar niche.