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  2. Gee (navigation) - Wikipedia

    en.wikipedia.org/wiki/Gee_(navigation)

    GEE airborne equipment, with the R1355 receiver on the left and the Indicator Unit Type 62A on the right. The 'scope shows a simulated display, including the "ghost" A1 signal. GEE control bays GEE transmitter. Gee, sometimes written GEE, [a] was a radio-navigation system used by the Royal Air Force during World War II.

  3. Indicator (distance amplifying instrument) - Wikipedia

    en.wikipedia.org/wiki/Indicator_(distance...

    Ideal test indicator pushed. Prior to modern geared dial mechanisms, test indicators using a single lever or systems of levers were common. The range and precision of these devices were generally inferior to modern dial type units, with a range of 10/1000 inch to 30/1000 inch, and precision of 1/1000 inch being typical.

  4. Automatic identification system - Wikipedia

    en.wikipedia.org/.../Automatic_identification_system

    This will not affect users, but system builders need to upgrade software to accommodate the new standard. A standard for AIS base stations has been long-awaited. Currently ad-hoc networks exist with class A mobiles. Base stations can control the AIS message traffic in a region, which will hopefully reduce the number of packet collisions.

  5. Base station subsystem - Wikipedia

    en.wikipedia.org/wiki/Base_station_subsystem

    The hardware of GSM base station displayed in Deutsches Museum. The base station subsystem (BSS) is the section of a traditional cellular telephone network which is responsible for handling traffic and signaling between a mobile phone and the network switching subsystem.

  6. Base station - Wikipedia

    en.wikipedia.org/wiki/Base_station

    The base station is one end of a communications link. The other end is a movable vehicle-mounted radio or walkie-talkie. [6] Examples of base station uses in two-way radio include the dispatch of tow trucks and taxicabs. Basic base station elements used in a remote-controlled installation. Selective calling options such as CTCSS are optional.

  7. Integrated standby instrument system - Wikipedia

    en.wikipedia.org/wiki/Integrated_Standby...

    An integrated standby instrument system (ISIS) is an electronic aircraft instrument. It is intended to serve as backup in case of a failure of the standard glass cockpit instrumentation, allowing pilots to continue to receive key flight-related information. Prior to the use of ISIS, this was performed by individual redundant mechanical ...

  8. Current loop - Wikipedia

    en.wikipedia.org/wiki/Current_loop

    That is, a base station that was configured to transmit with a +18 mA current could have options changed to (instead) make it transmit when +6 mA was present. In two-way radio use, AC signals were also present on the circuit pair. If the base station were idle, receive audio would be sent over the line from the base station to the dispatch office.

  9. Long baseline acoustic positioning system - Wikipedia

    en.wikipedia.org/wiki/Long_Baseline_Acoustic...

    The baseline stations are first deployed in the corners of a work site. Their relative position is then precisely measured using the AquaMap system's automatic acoustic self-survey capability. For geo-referenced operations, the baseline positions are surveyed by differential GPS or a laser positioning equipment (total station).

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