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  2. Signal strength in telecommunications - Wikipedia

    en.wikipedia.org/wiki/Signal_strength_in...

    Weak signal strength can also be caused by destructive interference of the signals from local towers in urban areas, or by the construction materials used in some buildings causing significant attenuation of signal strength. Large buildings such as warehouses, hospitals and factories often have no usable signal further than a few metres from ...

  3. Mobile phone signal - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone_signal

    A mobile phone signal (also known as reception and service) is the signal strength (measured in dBm) received by a mobile phone from a cellular network (on the downlink). Depending on various factors, such as proximity to a tower, any obstructions such as buildings or trees, etc. this signal strength will vary. Most mobile devices use a set of ...

  4. Comparison of mobile phone standards - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_mobile_phone...

    Able to produce a reasonable call with lower signal (cell phone reception) levels. Uses soft handoff, reducing the likelihood of dropped calls. IS-95's variable rate voice coders reduce the rate being transmitted when speaker is not talking, which allows the channel to be packed more efficiently. Has a well-defined path to higher data rates.

  5. You’re Not Imagining It: Cell Phone Reception Is Getting Worse

    www.aol.com/finance/not-imagining-cell-phone...

    Workers install equipment on a 5G cell tower in Salt Lake City, Utah, U.S., on Tuesday, Jan. 11, 2022. George Frey—Bloomberg/Getty Images

  6. Cellular network - Wikipedia

    en.wikipedia.org/wiki/Cellular_network

    The most common example of a cellular network is a mobile phone (cell phone) network. A mobile phone is a portable telephone which receives or makes calls through a cell site (base station) or transmitting tower. Radio waves are used to transfer signals to and from the cell phone.

  7. GSM frequency bands - Wikipedia

    en.wikipedia.org/wiki/GSM_frequency_bands

    Often these phones use multiple frequency bands as well. For example, one version of the Nokia 6340i GAIT phone sold in North America can operate on GSM-1900, GSM-850 and legacy TDMA -1900, TDMA-800, and AMPS -800, making it both multi-mode and multi-band.