[time-nuts] Re: GPS failed

[paul swed]

Skipp
I am aware at least in the US that there is the possibility of 5G
interference along with newer possible bands that 5G can use. I have read
several articles in a publication called GNSS.


Thats why I am using wwvb at 60 KHz. Humor intended.
Regards
Paul
WB8TSL

On Mon, Jul 11, 2022 at 8:49 AM skipp Isaham via time-nuts <
time-nuts at lists.febo.com> wrote:

> Hello to the Group,
>
> I'd like to get some opinions and war stories regarding GPS reliability at
> high RF level and elevation locations.
>
> Background:  Three different hill-top GPS receivers, all different types,
> using
> different antennas mounted on an outside fixiture, plain view of the open
> sky,
> all stopped working.
>
> Test antennas were brought in and placed on a fixture well away from the
> original antennas, the recevers went back in to capture and lock.
>
> From what I understand, the original antennas are what I would call
> straight
> preamp with no pre-selection / filtering.
>
> The ordered and now inbound replacements are said to contain a SAW filter
> system. It is the intent of the client to just place these "improved
> antennas" in
> to service and get on with life.
>
> I would suspect a GPS antenna (and receiver) could be subject to RF
> overload
> or blocking, however, we're assuming nothing major has changed at the
> site, nor
> any nearby location.  One might think there are more GPS receivers being
> pushed
> out of reliable operation by the world around them, I'm just not hearing
> those stories
> from a lot of people using them (GPS receivers).
>
> Any new install GPS receiver antenna ordered will/should contain some
> pre-selection
> to potentially avoid a problem, even some years down the road? Seems like
> that's
> where things are going... no more off the shelf, wide band, (hot)
> preamplified GPS antennas
> in busy locations?
>
> Thank you in advance for any related comments and/or opions ...
>
> cheers,
>
> skipp
>
> skipp025 at jah who dot calm
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