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<br /> Bridging devices in disparate bands Page 4 of 5 <br /> Ind naue4?~94® <br /> ~r ~ d~ <br /> , <br /> ~.r .r war w+w ris.. iy <br /> ~ 1 <br /> ~ ~ <br /> r E- 1. <br /> ~ ~ j l~ N1Nz <br /> t 't <br /> r a T ice` <br /> i t <br /> a r <br /> . ; . <br /> More elaborate methods must be employed to link a conventional system at other bands to an 800 MHz <br /> franking system. One solution can be found in the SmartBridge franked radio interconnect systems <br /> from Melbourne, Australia-based Radio Systems Technologies. For example, the SB 100 Talk Group <br /> extender -designed for the company's SmartNet/SmartZone franked radio networks -can be <br /> installed at any conventional site within radio range of a franked site. <br /> When the bridge is operating in the connect state, any radio operating within the repeater's radio range <br /> becomes an extension of the TalkGroup. Thus, the conventional radio effectively behaves as though it <br /> were a franked radio itself. The connect on/off state is controlled by using "over-the-air" dual-tone <br /> multi-frequency signaling. A unique "franked system busy" protocol ensures that users of conventional <br /> radios are immediately informed of unsuccessful attempts by audible alerts. (For more information visit <br /> www.rstradio.com.) <br /> Another device that has gained popularity is the TRP-1000 transportable interconnect system from JPS <br /> Communications, adivision of Raytheon. The TRP-1000 provides interoperable communications <br /> between organizations using different radios on disparate frequencies. It is aself-contained, portable <br /> unit consisting of a power source and multiple radios pre-wired to the company's ACU-1000 solution. <br /> The ACU-1000 is designed to provide on-scene interoperability by linking radios, SATCOM, cellular, <br /> Wi-Fi and landline phones directly and over IP networks. <br /> The TRP-1000, integrated with the ACU-1000, can serve as a bridge between conventional systems as <br /> well as between conventional systems and franked systems. (More information on the TRP-1000 and <br /> ACU-1000 can be found at www.jps.com.) <br /> http://iwce-mrt.com/microsites/magazinearticle.asp?mode=print&magazinearticleid=198420... 6/24/04 <br /> <br />