Tessco Wireless Journal December January 2014 Page 10 Systems & Applications

Product information and performance claims are provided by manufacturers. 10 Product information and performance claims are provided by manufacturers. 10 Product information and performance claims are provided by manufacturers. 10 SYSTEMS & APPLICATIONS December 2013 January 2014 Maximizing the Capabilities of Your Commercial Two-Way Radios By Scott Shapiro, TESSCO Technologies Traditional two-way radio systems continue to serve as one of the most reliable and secure methods of communication today . While radio platforms continue to converge with cellular and IP technology, two-way radio functionality and features remain as a mainstay for Public Safety, commercial, government, utilities, transportation, and many other markets that require robust and dependable communica- tion systems. One reason that two-way radios are a great fit for these markets is that they are dedicated primarily to voice capabilities, which support immediate person-to-person and group communications. While today's smart devices provide many new features, in- novations, and useful Apps, it is the simplicity and options of the two-way radio that make it attractive for situations where usability is vital. Another benefit associated with using two-way radios in the field is that they are de- signed to require minimal physical interaction from the user, resulting in quick message ac- knowledgement, response time, and in many cases, single-button operation. From a finan- cial perspective, two-way radios can carry a lower total cost of ownership versus the use of cellular, because there is typically no per- device contract required for radios. While two-way radio is a mature technol- ogy with many existing systems deployed, there are consistent trends and changes in the industry that support the evolution of the system as a whole. A key driver for growth in the two-way radio market over the past sev- eral years has been the FCC's narrowband- ing initiative, which required all Public Safety and industrial land mobile radios systems to migrate from 25 kHz (wideband) to 12.5 kHz (narrowband) channel bandwidth by January 2013. The FCC enacted narrowbanding rules to increase channel capacity within the exist- ing spectrum in order to accommodate more users since demand for two-way radio opera- tion has expanded significantly. Compliance with these rules has affected all aspects of the commercial radio space, result- ing in the need for upgrades, new system de- signs, modification of existing infrastructure, and deployment of new mobile and portable equipment. With many new and upgraded systems now in operation, organizations are now focused on maximizing utilization of their fixed and portable two-way radio equipment and are taking measures to extend the return on their investment. From a portable radio perspective, one of the best ways to ensure reliability and us- ability of the radio is to take the proper steps to preserve its power source, its battery. While the chemistries, form factors, and features of two-way radio batteries have evolved over the years, one fact remains constant - the radio is only as dependable as the battery that powers it. Proper maintenance of two-way radio batteries not only involves appropriate charg- ing methods, but also includes analysis and conditioning, making sure that the battery lasts as long as possible over its cycle and usage life. Using the right combination of bat- tery, charger, and analyzer/conditioner helps to ensure that batteries and the radios they power will perform reliably in the field and support dependable communications when needed. The battery and charger work as a system to keep the radio optimized for use, and there are a number of factors to consider when choosing the right battery/charger solution. The following charts summarize the primary selection criteria for both the battery and the charger, and offer important considerations for each. TESSCO got its start in the wireless busi- ness supplying some of the early two-way radios to railroads. More than 30 years hence, TESSCO is a leading supplier of two-way radio solutions. We continue to feature the industry-leading manufacturers in mobile, portable, and interoperable two-way radio systems and components to support the needs of resellers and end-users. TESSCO carries a selection of two-way radios and ac- cessories for almost all models of two-way systems in use today. Let us show you how to realize the highest productivity, reliability, and cost-effectiveness of your two-way radio operations. Scott Shapiro is TESSCO's Category Manager for two-way radio accessories; he can be reached at shapiro@tessco.com. Figure 1: Choosing a Battery Figure 2: Choosing a Charger/Analyzer/Conditioner Compatibility Chemistry Cell Origin Capacity Durability Approvals Is the battery designed specifically for the appropriate radio model? Does the chemistry meet the needs of the application and existing equipment? Where did the battery cells originate, and what quality is expected? How long of a cycle is needed to support both day-to-day and critical usage? What types of environments and usage can the battery case handle? (temperature, shock, etc.) Does the application require approvals such as IS/FM (Intrinsically Safe), MSHA (Mining Safety and Health Administration)? Chemistry Charge Rate Field Upgradability Capacity Analysis Number of Positions Portability Battery On/Off What chemistry(s) does the charger support? Is standard or rapid charging preferred? Can charger components such as adapter and power supply be changed in the field? Does the application require display of capacity and battery condition? Will the user be charging a single battery or multiple batteries and radios? Will the charger be used in a portable or base/desktop configuration? Should the charger accommodate standalone batteries, or drop-in radio capabilities? Your Total Source for Two-Way Radio and Mission-Critical Communications For more than 30 years, TESSCO has been a leading provider of two-way radio solutions that enable Public Safety professionals and businesses to stay in com- munication at all times. Two-way radios and accessories from TESSCO's industry-leading product portfolio ensure reliable communica- tion during regular operations and in the face of an emergency. We feature the best manu- facturers in mobile, portable, and interoper- able two-way radio systems and components - and we make it easy to do business with us with our broad selection, value-added ser- vices, and technical support expertise. Trust TESSCO for your critical communications. Visit www.tessco.com/go/twoway to learn more. I80 Six-Bay iCHARGE Battery Charger/Conditioner Advanced Charger Technologies (ACT) TESSCO No. 317572 NXU-2A Network Extension Unit With VoIP/RoIP Raytheon TESSCO No. 380121 SEI ADVISOR Two-Tone Paging Encoder/Decoder Schurman Electronics TESSCO No. 567663 CRITERIA IMPORTANT CONSIDERATIONS Featured Two-Way Radio Solutions

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