Tonawanda, N.Y.-based Sinclabs, a division of Sinclair Technologies, announced its Excelsior antenna line, which consists of low band, 1/4 wave, 220 MHz, wideband UHF/VHF, cellular trunking, no ground plane and true 2dB wide band antennas. The Excelsior SVB1482 antenna is a wideband mobile antenna which spans 2 dB across the entire bandwidth of 148 MHz to 174 MHz, said Sinclabs. It is ideal, said the company, for marine and oil patch applications, farmers, miners, fishermen, police, ambulance and fire departments. Excelsior antennas are available in stainless steel or black finish. (800) 288-2763.
DSC Communications Corp. launched its Airspan wireless fixed access system. Airspan is a point-to-multipoint fixed digital radio system using spread spectrum Code Division Multiple Access technology. DSC said the system is an alternative to conventional telephony in remote and temporary applications. Airspan delivers high quality voice, data and ISDN services quickly and cost-effectively, said the company. Airspan provides microwave radio channels from a central terminal, located in a local exchange or outside cabinet, to individual subscriber terminals located on a subscriber’s building. The subscriber terminal consists of integral antennas and electronics housed in a terminal less than 30 cm square and can be configured to run on battery, mains or solar power. Airspan transparently supports fixed loop network services, is available in variable cell sizes from 300 meters to 20 kilometers in radius and can deliver advanced services without the cost of cable installation. DSC noted Airspan functions in urban, suburban and rural environments. (214) 519-3000.
The Land Mobile Products Sector of Motorola Inc. introduced the JT 1000 series of 16-channel portable radios. JT 1000 is Motorola’s first handheld front-panel programmable radio, said the company, and allows carriers and other licensed users to program information on-site without using radio service software, Pbs or modems. Those functions include channel spacing, power level, transmit/receive frequencies by mode, multiselectable PC/DEL/Carrier-squelch and operator squelch. Motorola noted JT 1000 enables public-safety agencies to program the radio to work in conjunction with other agencies’ radios and utility users can program the radio to coordinate with local municipalities. JT 1000 operates between 136 MHz and 174 MHz. Two models operate between 403 MHz to 512 MHz, for compatibility between geographic regions. Other features include enhanced audio to reduce distortion, time-out-timer to prevent a radio from indefinitely occupying a channel, adjustable power level to extend coverage and conserve battery power, smart PTT/busy channel lockout for increased control of communications. (708) 576-1000.
AnchorGuard LLC of Sioux Falls, S.D., said it has designed a system addressing the problem of corrosion-created by certain soil conditions-on guyed tower anchors. AnchorGuard Corrosion Control System uses cathodic protection and high output magnesium anodes to ensure strong protective current, commented the company. Each system includes a durable monitoring device with a patented permanent reference cell and a removable test head for installation at each anchor. Test points are built in for measurement of current flow and structure-to-earth potential. This allows for easy verification of system effectiveness, said the company. The AnchorGuard system is available in three models to protect a wide range of anchor sizes and dimensions. (605) 331-6426.
Survey Technologies Inc. plans to unveil its new mobile signal analysis system-the STI-9100-at PCS ’95 in Orlando, Fla., Sept. 21 to Sept. 23. The Beaverton, Ore.-based company said engineers in personal communications services, cellular, mobile radio, paging and broadcast industries will use STI-9100 for new site set up and system maintenance. STI-9100 incorporates a laptop computer with up to four PCMCIA (Personal Computer Memory Card International Association) slots, touch color screen interface, data acquisition and analysis software and multichannel global positioning service. The instrument automates drive tests for taking measurements, analyzing data and producing color reports to show results, explained Survey Technologies. The STI-9100 receiver driver module in the acquisition software is easily modified, added the company, which allows operators, manufacturers and installers of communications technologies to incorporate their application specific receivers to measure bit error and packet completion rates and signal-to-noise and co-channel interference. (503) 848-8534.
Pacific Communication Sciences Inc., of San Diego, Calif., announced the Cellerity Series Cellular Digital Packet Data Transportable Mobile Data Base Station System. PCSI also announced shipment of more than 3,500 Cellerity Series CDPD MDBS systems for operation in cellular networks around the world.
PCSI said the Cellerity TMS allows CDPD carriers, Mobile-End System manufacturers and software developers to build, test and demonstrate products by providing a transportable CDPD base station. The company said TMS is ideal for temporary purposes such as CDPD coverage for trade shows and off-site demonstrations. CDPD is a packet data technology designed to overlay the existing AMPS cellular infrastructure already in place throughout the United States and in more than 54 other countries. CDPD transmits data packets over existing cellular frequencies. PCSI is an infrastructure equipment provider and a wholly owned subsidiary of Cirrus Logic Inc., Fremont, Calif. (619) 535-9500.
TGA Systems Inc. has introduced its Prism Network Router, which protects paging terminals from receiving unwanted traffic carried on a common TNPP network. According to the Atlanta company, a source code is provided with systems level permission that allows a terminal operator to select from which carriers it will accept service requests. For instance, if an operator doesn’t want to receive a particular carrier’s 2-tone paging signals, he or she simply won’t turn on their 2-tone permission table for that carrier. This PNR “firewall,” as TGA calls it, also prevents unwanted command packets from being received by the paging terminal. (770) 449-7740.
Last month E.F. Johnson Co. introduced a digital radio that the company said will “form the cornerstone of a new APCO-25 (Association of Public-Safety Officials Inc.) digital trunking product line based on Johnson’s current Multi-Net II wide-area trunking system.” The Summit DX 800 MHz Frequency Division Multiple Access radio device is software upgradable, features a 10-character alphanumeric liquid crystal display, variable systems and six programmable option buttons, said E.F. Johnson. The Summit radio also can group up to 100 systems. According to the company, the new digital radio combines proprietary E.F. Johnson trunking and Motorola Inc. digital technology obtained through a technology sharing agreement signed by the two companies last October. (612) 882-5500.
Andrew Corp. introduced GRIDPAK, a new microwave antenna series for wireless applications in the 335 MHz to 2.5 GHz frequency bands. The design of GRIDPAK antennas locks grid rods to an antenna’s outer frame, said Andrew, which allows for field assembly of a complete antenna as well as structural integrity. The antenna design also reduces tower windloading, Andrew added, which reduces tower and site construction costs. The company said GRIDPAK is ideal for needs of rural telephony systems and low capacity system applications in remote areas. GRIDPAK antennas are available with either air dielectric feeds or foam dielectric feeds, and in a variety of sizes based on different frequency bands. (800) 255-1479.
