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    Re: GPS Out but GLONASS O.K.
    From: Richard B. Langley
    Date: 2012 Jul 19, 15:13 -0300

    A nearby lightening strike can "fry" the sensitive front-ends of radio
    receivers whether grounded or not. It is recommended that external
    antennas have "lightening arrestors" and they can divert induced
    currents to help protect equipment (and the building/vessel) they're
    attached to. We had a telephone-company-supplied modem in our house
    that went out of commission ostensibly due to a nearby lightening
    strike. Phone company replaced it.
    -- Richard
    On 19-Jul-12, at 3:04 PM, Alan S wrote:
    > Richard:
    > I realize that the voltage involved in lightening strikes is
    > extremely high, however re ship's electronics being knocked out by
    > one such, couldn't the electronics be grounded or otherwise
    > protected, or does the voltage involved preclude such attention?
    > Alan
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    | Richard B. Langley                            E-mail:
    lang@unb.ca         |
    | Geodetic Research Laboratory                  Web: http://www.unb.ca/GGE/
    | Dept. of Geodesy and Geomatics Engineering    Phone:    +1 506
    453-5142   |
    | University of New Brunswick                   Fax:      +1 506
    453-4943   |
    | Fredericton, N.B., Canada  E3B
    5A3                                        |
    |        Fredericton?  Where's that?  See: http://
    www.fredericton.ca/       |

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