LYCOS RETRIEVER 
Radios: Systems
built 631 days ago
Most aircraft radio systems [there is ... a completely different class of radios used for cars and boats known as 'Pistol Grips'] come with four or more channels of control capability. Each system comes with just about everything you need to install the radio into a built model. Typically, novice or beginner sailplanes utilize only 2 channels of control, but you are still better off purchasing a radio with at least 4 channels of control. Most 4 channel radios typically are complete with rechargeable nickel-cadmium battery packs that are reliable and can give many years of service. Also, there are still brands of radios that are advertised as 2 channel units, have 2 control levers, but the lever on the left for is for elevator (up and down) control only and one on the right for rudder (right and left). This is not the preferable configuration for most pilots and it can be difficult to find a fellow pilot who will (or can) fly with this setup.
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Because of the inherent mobility requirements of wireless radios, power consumption is an important factor that is a key challenge in creating an efficient and cost-effective radio design. The SDR Development Platform is the only development tool in the SDR segment to include the Power Measurement API which enables developers to track real-world power consumption of the digital baseband unit precisely while algorithm functions are being executed. Traditional power measurement techniques require external measurement of power consumption that offers rough estimates at best, but this development kit will include five different API functions to measure power consumption for all the different elements of the kit. The Power Measurement API gives developers more visibility into their systems, enabling them to measure currents drawn from individual components such as the DSP and the FPGA. This enables developers to extract important information such as burst and peak power for a specific data rate, enabling them to accurately isolate components as well as accurately estimate battery life. Additionally, developers are able to achieve the optimal power balance while maximizing performance between the different SDR components, all with effectively zero impact on system performance.
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Currently, joint military deployments require the services to rely on many makes, models and types of radios, and few of them communicate seamlessly with others. The JTRS program plans to replace the traditional hardware radios currently deployed with devices that can emulate any radio's capabilities by simply changing software. Fielded JTRS radios can be upgraded with new software via the wireless information network. This ability to insert emerging technology into the JTRS system paves the way for broadening the radios' performance and creating new applications such as sensors for signals intelligence.
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EFJohnson is a leading provider of two way radios and communication systems for law enforcement, fire fighters, EMS, and the military. Founded in 1923, the company has a lengthy history of leadership in numerous communication industry standards initiatives and organizations and was one of the first developers of wireless communications products to be fully compliant with federal government Project 25 interoperability standards. EFJohnson offers a comprehensive portfolio of digital and analog radio communications solutions which assist in effectively and affordably managing the transition to digital P25 compliant systems. For more information, visit http://www.EFJohnson.com.
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The new public safety communications system will include the deployment of approximately 1,500 ASTRO Spectra® mobile radios, 1400 XTS3000TMModel II portable radios and 40 Gold Series EliteTMCRT Consoles. State public safety municipalities will have integrated voice and data capability on the new ASTRO backbone. All console positions in the system will be connected to an Embassy Switch, or audio switching control, housed in the State's Capitol to ensure seamless interoperability between all agencies for wide area communications, disaster or major incident response.
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Next-generation radios require a software defined architecture that supports multiple protocols while providing standardized hardware that can implement a broad range of systems from simple baseband to complex wideband radios. For example, a radio for military applications, such as a soldier radio, may need to support multiple waveforms as it is supplied to different groups within the military. In public safety applications, multi-protocol radios need to be able to support various emergency bands including police and fire bands.
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