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  • UHF Radio Modem Supports Computerized Irrigation Control (.pdf)
    , whether that is an office or farm house where the. grower wants to monitor and change the settings on the irrigation systems. Traditional narrowband radio delivers a. strong signal to the rigs. The UHF narrowband radios in the FieldNet product offer higher data rates than most radio. modems
  • Effectively Testing 700 MHz Public Safety LTE Broadband and P25 Narrowband Networks White Paper
    threats is often hampered by the proliferation of divergent signaling standards and non-aligned spectrum planning. APCO Project 25 (commonly called "P25") digital radio systems are typically used as a solution to the voice communications aspect of this problem. However while P25 systems might
  • Electromagnetic Interference
    Transients (J1113/12). Chattering Relay (J1113/12). 4.13.3.4.1 Radiated Emissions (J1113-41). 4.13.3.4.4 Conducted Emissions, DC Power Leads (J1113-41). SAE J2139. Load Dump. Inductive Switching. Mutual. ECE Reg. 10. Broadband Electromagnetic Emissions. Narrowband Electromagnetic Emissions. Immunity
  • Programmable Crystal Oscillators with Sub-ps Jitter and Multiple Frequency Capability
    is zero, and the gain of A exceeds the loss of B, then the. circuit will oscillate at that frequency. The obvious implication with a narrowband. resonator, such as a quartz crystal, is that each new frequency requires a new crystal with. the manufacturing consequences being quite profound. Thousands
  • 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
  • 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
  • DSP GMSK Modem for Mobitex and Other Wireless Infrastructures
    . Introduction. About Mobitex. Mobitex is a packetized narrow-band data service operating near 900 MHz (450 MHz in the United. Kingdom), originally conceived by Swedish Telecom and further developed by Eritel, a joint venture of. Swedish Telecom and Ericsson. The service is being offered in the United States
  • Getting the Most Out of Your WirelessHART System (.pdf)
    in a pseudo-random pattern for every data transmission. The goal is to tolerate. interference in the band while still moving data from location to location. Each "hop" is essentially a narrowband. transmission that takes a few milliseconds before moving on to another channel to transmit another packet

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