• Will 5G Kill Your GPS Receiver?

    From Larry Dighera@21:1/5 to All on Tue May 26 07:56:16 2020

    Garmin sees GPS threat from Ligado approval vote
    May 21, 2020 By Dan Namowitz

    A GPS-industry giant wants the Federal Communications Commission to
    purge the record of any doubt that the company opposes the
    controversial Ligado Networks 5G wireless network proposal that the
    agency approved in April.

    Critics say Ligado Networks' proposed 5G network could jam GPS

    Garmin International, a leading navigation technology company, wrote
    to the FCC on May 15 “to supplement and correct the record regarding
    several faulty assertions” it said the FCC included in its order in
    the Ligado case. Garmin reiterated its “ongoing concern” that
    GPS-based devices could experience interference from the proposed
    "internet of things" network that would operate on the L-band spectrum
    adjacent to GPS frequencies.

    In the letter
    http://download.aopa.org/advocacy/2020/0520_Garmin_ligado.pdf signed
    by three software and engineering officials, Garmin said the FCC’s
    order “relies heavily” on “co-existence agreements” between Ligado
    Networks and GPS manufacturers.

    But Garmin said it never entered into such agreements, only
    participating in “a technical settlement agreement in 2015 to resolve
    ongoing litigation brought against it by Ligado. Nothing in the
    Settlement Agreement constitutes support for or an endorsement of
    Ligado or its proposed services or technologies.

    “Garmin states again that it does not support or endorse Ligado’s
    license modification applications,” the letter said, adding that the
    settlement agreement “captures Garmin’s ongoing concern about its
    certified aviation devices” and preserves its ability to “petition the government for protection of these devices.”

    Many public and private-sector critics of Ligado’s plan that was first
    put forth several years ago by the bankrupt venture LightSquared have
    been calling for the FCC to rethink its April 20 approval of the
    Ligado network. Some experts have compared https://www.aopa.org/news-and-media/all-news/2020/may/14/jam-session-ligado-network-gets-static-from-congress-over-threat-to-gps
    the difficulty of receiving GPS in the presence of the louder
    wireless-network transmissions to trying to hear the rustling of
    leaves over multiple jet engines.

    On the same day Garmin weighed in, 32 U.S. senators signed onto a
    letter http://download.aopa.org/advocacy/2020/0520_ligado.pdf urging
    the FCC to “immediately stay and reconsider” its approval to “more
    fully consider the technical concerns raised by numerous federal
    agencies and private sector stakeholders, and outline a path forward
    that adequately addresses these concerns.”

    The FCC’s action “has discounted testing and assessments” by nine
    federal agencies—all of which noted concerns “that the Ligado plan
    would interfere with millions of GPS receivers and satellite services
    across the nation,” the senators wrote.

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