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  • Effectively Testing 700 MHz Public Safety LTE Broadband and P25 Narrowband Networks White Paper
    In times of great emergency (such as September 11th attacks, Hurricane Katrina, or the 2010 oil spill in the Gulf of Mexico) access to reliable, integrated communications and tactical information is absolutely critical. Unfortunately the ability to mount a coordinated inter-agency response to major
  • Smart Computing Article - frequency hopping spread spectrum (FHSS) to FTP
    LAN. One is called narrowband technology, in which a radio system sends and receives data on a specified radio frequency. By using separate radio frequencies for each act of communication, privacy and a lack of interference are maintained, much like separate phone lines keep conversations between
  • Look Ma - no wires!
    to narrowband interference. On the other hand, narrowband transmissions transmit on one frequency, increasing the likelihood of interception or jamming. Direct sequence is a spread-spectrum technique that encodes each bit of data and sends it as a bit sequence. The original information is spread out over
  • EETimes.com | Electronics Industry News for EEs & Engineering Managers
    million to Geocast Network Systems, Inc. and said it will develop an advanced digital television receiver for the Menlo Park, Calif. company's data-casting network. Draft control spec headed for home networks A consortium that has been developing a narrowband home networking scheme aimed at controlling
  • Sensor Sense: Optical data transmission
    represents a logic 1 value while the other frequency represents a logic 0. This resembles the way modems use two different audio tones to send data over telephone lines. The signal from the infrared sensor in the receiver feeds narrow-band filters tuned to the two frequencies. The filters minimize any
  • The Secret Behind Effective Machine Condition Analysis
    , there are a wide range of tests and practices. with varying effectiveness. An example from the field of. vibration analysis: a common approach is to use less. detailed, broadband measurements as a screening tool and. then to go back into individual cases with more. sophisticated, narrowband equipment
  • Building a Microwave Frequency Synthesizer-Part 1: Getting Started (.pdf)
    synthesizer can be treated as. width and fine frequency resolution while oth-. a black box that translates one (or more) input. ers need a relatively narrowband (10-20%). base (reference) frequency to a number of out-. coverage with a rough step or just a single. put frequencies as shown in Figure 1
  • Frequency Synthesis: Current Solutions and New Trends (.pdf)
    power. A single tone or relatively narrowband (10. Spurious Content. to 20 percent) LO signal can be just enough. Spurs are undesired artifact products creat-. for many applications. ed by synthesizer components at discrete fre-. However, modern digi-. quencies. Spur location and level are deter

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